Types.

There are two basic types of optical microscopes: simple microscopes and compound microscopes. A simple microscope uses the optical power of single lens or group of lenses for magnification. A compound microscope uses a system of lenses (one set enlarging the image produced by another) to achieve much higher magnification of an object. The vast majority of modern research microscopes are compound microscopes while some cheaper commercial digital microscopes are simple single lens microscopes. Compound microscopes can be further divided into a variety of other types of microscopes which differ in their optical configurations, cost, and intended purposes.

Simple microscope.

A simple microscope uses a lens or set of lenses to enlarge an object through angular magnification alone, giving the viewer an erect enlarged virtual image. The use of a single convex lens or groups of lenses are found in simple magnification devices such as the magnifying glass, loupes, and eyepieces for telescopes and microscopes.

Compound microscope.

A compound microscope uses a lens close to the object being viewed to collect light (called the objective lens) which focuses a real image of the object inside the microscope (image 1). That image is then magnified by a second lens or group of lenses (called the eyepiece) that gives the viewer an enlarged inverted virtual image of the object (image 2). The use of a compound objective/eyepiece combination allows for much higher magnification. Common compound microscopes often feature exchangeable objective lenses, allowing the user to quickly adjust the magnification. A compound microscope also enables more advanced illumination setups, such as phase contrast.

Other microscope variants.

There are many variants of the compound optical microscope design for specialized purposes. Some of these are physical design differences allowing specialization for certain purposes:  Other microscope variants are designed for different illumination techniques:

Digital microscope.

A digital microscope is a microscope equipped with a digital camera allowing observation of a sample via a computer. Microscopes can also be partly or wholly computer-controlled with various levels of automation. Digital microscopy allows greater analysis of a microscope image, for example measurements of distances and areas and quantitaton of a fluorescent or histological stain.  Low-powered digital microscopes, USB microscopes, are also commercially available. These are essentially webcams with a high-powered macro lens and generally do not use transillumination. The camera attached directly to the USB port of a computer, so that the images are shown directly on the monitor. They offer modest magnifications (up to about 200×) without the need to use eyepieces, and at very low cost. High power illumination is usually provided by an LED source or sources adjacent to the camera lens.  Digital microscopy with very low light levels to avoid damage to vulnerable biological samples is available using sensitive photon-counting digital cameras. It has been demonstrated that a light source providing pairs of entangled photons may minimize the risk of damage to the most light-sensitive samples. In this application of ghost imaging to photon-sparse microscopy, the sample is illuminated with infrared photons, each of which is spatially correlated with an entangled partner in the visible band for efficient imaging by a photon-counting camera.

History.

Invention.

The earliest microscopes were single lens magnifying glasses with limited magnification which date at least as far back as the widespread use of lenses in eyeglasses in the 13th century.  Compound microscopes first appeared in Europe around 1620 including one demonstrated by Cornelis Drebbel in London (around 1621) and one exhibited in Rome in 1624.  The actual inventor of the compound microscope is unknown although many claims have been made over the years. These include a claim 35 years after they appeared by Dutch spectacle-maker Johannes Zachariassen that his father, Zacharias Janssen, invented the compound microscope and/or the telescope as early as 1590. Johannes' (some claim dubious) testimony pushes the invention date so far back that Zacharias would have been a child at the time, leading to speculation that, for Johannes' claim to be true, the compound microscope would have to have been invented by Johannes' grandfather, Hans Martens. Another claim is that Janssen's competitor, Hans Lippershey (who applied for the first telescope patent in 1608) also invented the compound microscope. Other historians point to the Dutch innovator Cornelis Drebbel with his 1621 compound microscope.  Galileo Galilei is also sometimes cited as a compound microscope inventor. After 1610, he found that he could close focus his telescope to view small objects, such as flies, close up and/or could look through the wrong end in reverse to magnify small objects. The only drawback was that his 2 foot long telescope had to be extended out to 6 feet to view objects that close. After seeing the compound microscope built by Drebbel exhibited in Rome in 1624, Galileo built his own improved version. In 1625, Giovanni Faber coined the name "microscope" for the compound microscope Galileo submitted to the Accademia dei Lincei in 1624 (Galileo had called it the ""occhiolino"" or ""little eye""). Faber coined the name from the Greek words "μικρόν" (micron) meaning "small", and "σκοπεῖν" (skopein) meaning "to look at", a name meant to be analogous with "telescope", another word coined by the Linceans.  Christiaan Huygens, another Dutchman, developed a simple 2-lens ocular system in the late 17th century that was achromatically corrected, and therefore a huge step forward in microscope development. The Huygens ocular is still being produced to this day, but suffers from a small field size, and other minor disadvantages.

Popularization.

Antonie van Leeuwenhoek (1632–1724) is credited with bringing the microscope to the attention of biologists, even though simple magnifying lenses were already being produced in the 16th century. Van Leeuwenhoek's home-made microscopes were simple microscopes, with a single very small, yet strong lens. They were awkward in use, but enabled van Leeuwenhoek to see detailed images. It took about 150 years of optical development before the compound microscope was able to provide the same quality image as van Leeuwenhoek's simple microscopes, due to difficulties in configuring multiple lenses. In the 1850s, John Leonard Riddell, Professor of Chemistry at Tulane University, invented the first practical binocular microscope while carrying out one of the earliest and most extensive American microscopic investigations of cholera.

Lighting techniques.

While basic microscope technology and optics have been available for over 400 years it is much more recently that techniques in sample illumination were developed to generate the high quality images seen today.  In August 1893, August Köhler developed Köhler illumination. This method of sample illumination gives rise to extremely even lighting and overcomes many limitations of older techniques of sample illumination. Before development of Köhler illumination the image of the light source, for example a lightbulb filament, was always visible in the image of the sample.  The Nobel Prize in physics was awarded to Dutch physicist Frits Zernike in 1953 for his development of phase contrast illumination which allows imaging of transparent samples. By using interference rather than absorption of light, extremely transparent samples, such as live mammalian cells, can be imaged without having to use staining techniques. Just two years later, in 1955, Georges Nomarski published the theory for differential interference contrast microscopy, another interference-based imaging technique.

Fluorescence microscopy.

Modern biological microscopy depends heavily on the development of fluorescent probes for specific structures within a cell. In contrast to normal transilluminated light microscopy, in fluorescence microscopy the sample is illuminated through the objective lens with a narrow set of wavelengths of light. This light interacts with fluorophores in the sample which then emit light of a longer wavelength. It is this emitted light which makes up the image.  Since the mid-20th century chemical fluorescent stains, such as DAPI which binds to DNA, have been used to label specific structures within the cell. More recent developments include immunofluorescence, which uses fluorescently labelled antibodies to recognise specific proteins within a sample, and fluorescent proteins like GFP which a live cell can express making it fluorescent.

Components.

All modern optical microscopes designed for viewing samples by transmitted light share the same basic components of the light path. In addition, the vast majority of microscopes have the same'structural' components (numbered below according to the image on the right):

Eyepiece (ocular lens).

The eyepiece, or ocular lens, is a cylinder containing two or more lenses; its function is to bring the image into focus for the eye. The eyepiece is inserted into the top end of the body tube. Eyepieces are interchangeable and many different eyepieces can be inserted with different degrees of magnification. Typical magnification values for eyepieces include 5×, 10× (the most common), 15× and 20×. In some high performance microscopes, the optical configuration of the objective lens and eyepiece are matched to give the best possible optical performance. This occurs most commonly with apochromatic objectives.

Objective turret (revolver or revolving nose piece).

Objective turret, revolver, or revolving nose piece is the part that holds the set of objective lenses. It allows the user to switch between objective lenses.

Objective Lens.

At the lower end of a typical compound optical microscope, there are one or more objective lenses that collect light from the sample. The objective is usually in a cylinder housing containing a glass single or multi-element compound lens. Typically there will be around three objective lenses screwed into a circular nose piece which may be rotated to select the required objective lens. These arrangements are designed to be parfocal, which means that when one changes from one lens to another on a microscope, the sample stays in focus. Microscope objectives are characterized by two parameters, namely, magnification and numerical aperture. The former typically ranges from 5× to 100× while the latter ranges from 0.14 to 0.7, corresponding to focal lengths of about 40 to 2 mm, respectively. Objective lenses with higher magnifications normally have a higher numerical aperture and a shorter depth of field in the resulting image. Some high performance objective lenses may require matched eyepieces to deliver the best optical performance.

Oil immersion objective.

Some microscopes make use of oil-immersion objectives or water-immersion objectives for greater resolution at high magnification. These are used with index-matching material such as immersion oil or water and a matched cover slip between the objective lens and the sample. The refractive index of the index-matching material is higher than air allowing the objective lens to have a larger numerical aperture (greater than 1) so that the light is transmitted from the specimen to the outer face of the objective lens with minimal refraction. Numerical apertures as high as 1.6 can be achieved. The larger numerical aperture allows collection of more light making detailed observation of smaller details possible. An oil immersion lens usually has a magnification of 40 to 100×.

Focus knobs.

Adjustment knobs move the stage up and down with separate adjustment for coarse and fine focusing. The same controls enable the microscope to adjust to specimens of different thickness. In older designs of microscopes, the focus adjustment wheels move the microscope tube up or down relative to the stand and had a fixed stage.

Frame.

The whole of the optical assembly is traditionally attached to a rigid arm, which in turn is attached to a robust U-shaped foot to provide the necessary rigidity. The arm angle may be adjustable to allow the viewing angle to be adjusted.  The frame provides a mounting point for various microscope controls. Normally this will include controls for focusing, typically a large knurled wheel to adjust coarse focus, together with a smaller knurled wheel to control fine focus. Other features may be lamp controls and/or controls for adjusting the condenser.

Stage.

The stage is a platform below the objective lens which supports the specimen being viewed. In the center of the stage is a hole through which light passes to illuminate the specimen. The stage usually has arms to hold slides (rectangular glass plates with typical dimensions of 25×75 mm, on which the specimen is mounted).  At magnifications higher than 100× moving a slide by hand is not practical. A mechanical stage, typical of medium and higher priced microscopes, allows tiny movements of the slide via control knobs that reposition the sample/slide as desired. If a microscope did not originally have a mechanical stage it may be possible to add one.  All stages move up and down for focus. With a mechanical stage slides move on two horizontal axes for positioning the specimen to examine specimen details.  Focusing starts at lower magnification in order to center the specimen by the user on the stage. Moving to a higher magnification requires the stage to be moved higher vertically for re-focus at the higher magnification and may also require slight horizontal specimen position adjustment. Horizontal specimen position adjustments are the reason for having a mechanical stage.  Due to the difficulty in preparing specimens and mounting them on slides, for children it's best to begin with prepared slides that are centered and focus easily regardless of the focus level used.

Light source.

Many sources of light can be used. At its simplest, daylight is directed via a mirror. Most microscopes, however, have their own adjustable and controllable light source – often a halogen lamp, although illumination using LEDs and lasers are becoming a more common provision. Köhler illumination is often provided on more expensive instruments.

Condenser.

The condenser is a lens designed to focus light from the illumination source onto the sample. The condenser may also include other features, such as a diaphragm and/or filters, to manage the quality and intensity of the illumination. For illumination techniques like dark field, phase contrast and differential interference contrast microscopy additional optical components must be precisely aligned in the light path.

Magnification.

The actual power or magnification of a compound optical microscope is the product of the powers of the ocular (eyepiece) and the objective lens. The maximum normal magnifications of the ocular and objective are 10× and 100× respectively, giving a final magnification of 1,000×.

Magnification and micrographs.

When using a camera to capture a micrograph the effective magnification of the image must take into account the size of the image. This is independent of whether it is on a print from a film negative or displayed digitally on a computer screen.  In the case of photographic film cameras the calculation is simple; the final magnification is the product of: the objective lens magnification, the camera optics magnification and the enlargement factor of the film print relative to the negative. A typical value of the enlargement factor is around 5× (for the case of 35 mm film and a 15 × 10 cm (6 × 4 inch) print).  In the case of digital cameras the size of the pixels in the CMOS or CCD detector and the size of the pixels on the screen have to be known. The enlargement factor from the detector to the pixels on screen can then be calculated. As with a film camera the final magnification is the product of: the objective lens magnification, the camera optics magnification and the enlargement factor.

Operation.

Illumination techniques.

Many techniques are available which modify the light path to generate an improved contrast image from a sample. Major techniques for generating increased contrast from the sample include cross-polarized light, dark field, phase contrast and differential interference contrast illumination. A recent technique (Sarfus) combines cross-polarized light and specific contrast-enhanced slides for the visualization of nanometric samples. <gallery caption="Four examples of transilumination techniques used to generate contrast in a sample of tissue paper. 1.559 μm/pixel." align="center"> File:Paper Micrograph Bright.png|Bright field illumination, sample contrast comes from absorbance of light in the sample. File:Paper Micrograph Cross-Polarised.png|Cross-polarized light illumination, sample contrast comes from rotation of polarized light through the sample. File:Paper Micrograph Dark.png|Dark field illumination, sample contrast comes from light scattered by the sample. File:Paper Micrograph Phase.png|Phase contrast illumination, sample contrast comes from interference of different path lengths of light through the sample. </gallery>

Other techniques.

Modern microscopes allow more than just observation of transmitted light image of a sample; there are many techniques which can be used to extract other kinds of data. Most of these require additional equipment in addition to a basic compound microscope.

Applications.

Optical microscopy is used extensively in microelectronics, nanophysics, biotechnology, pharmaceutic research, mineralogy and microbiology.  Optical microscopy is used for medical diagnosis, the field being termed histopathology when dealing with tissues, or in smear tests on free cells or tissue fragments.  In industrial use, binocular microscopes are common. Aside from applications needing true depth perception, the use of dual eyepieces reduces eye strain associated with long workdays at a microscopy station. In certain applications, long-working-distance or long-focus microscopes are beneficial. An item may need to be examined behind a window, or industrial subjects may be a hazard to the objective. Such optics resemble telescopes with close-focus capabilities.  Measuring microscopes are used for precision measurement. There are two basic types. One has a reticle graduated to allow measuring distances in the focal plane. The other (and older) type has simple crosshairs and a micrometer mechanism for moving the subject relative to the microscope.

Limitations.

At very high magnifications with transmitted light, point objects are seen as fuzzy discs surrounded by diffraction rings. These are called Airy disks. The "resolving power" of a microscope is taken as the ability to distinguish between two closely spaced Airy disks (or, in other words the ability of the microscope to reveal adjacent structural detail as distinct and separate). It is these impacts of diffraction that limit the ability to resolve fine details. The extent and magnitude of the diffraction patterns are affected by both the wavelength of light (λ), the refractive materials used to manufacture the objective lens and the numerical aperture (NA) of the objective lens. There is therefore a finite limit beyond which it is impossible to resolve separate points in the objective field, known as the diffraction limit. Assuming that optical aberrations in the whole optical set-up are negligible, the resolution "d", can be stated as:  Usually a wavelength of 550 nm is assumed, which corresponds to green light. With air as the external medium, the highest practical "NA" is 0.95, and with oil, up to 1.5. In practice the lowest value of "d" obtainable with conventional lenses is about 200 nm. A new type of lens using multiple scattering of light allowed to improve the resolution to below 100 nm.

Surpassing the resolution limit.

Multiple techniques are available for reaching resolutions higher than the transmitted light limit described above. Holographic techniques, as described by Courjon and Bulabois in 1979, are also capable of breaking this resolution limit, although resolution was restricted in their experimental analysis.  Using fluorescent samples more techniques are available. Examples include Vertico SMI, near field scanning optical microscopy which uses evanescent waves, and stimulated emission depletion. In 2005, a microscope capable of detecting a single molecule was described as a teaching tool.  Despite significant progress in the last decade, techniques for surpassing the diffraction limit remain limited and specialized.  While most techniques focus on increases in lateral resolution there are also some techniques which aim to allow analysis of extremely thin samples. For example, sarfus methods place the thin sample on a contrast-enhancing surface and thereby allows to directly visualize films as thin as 0.3 nanometers.  On 8 October 2014, the Nobel Prize in Chemistry was awarded to Eric Betzig, William Moerner and Stefan Hell for the development of super-resolved fluorescence microscopy.

Structured illumination SMI.

SMI (spatially modulated illumination microscopy) is a light optical process of the so-called point spread function (PSF) engineering. These are processes which modify the PSF of a microscope in a suitable manner to either increase the optical resolution, to maximize the precision of distance measurements of fluorescent objects that are small relative to the wavelength of the illuminating light, or to extract other structural parameters in the nanometer range.

Localization microscopy SPDMphymod.

SPDM (spectral precision distance microscopy), the basic localization microscopy technology is a light optical process of fluorescence microscopy which allows position, distance and angle measurements on "optically isolated" particles (e.g. molecules) well below the theoretical limit of resolution for light microscopy. "Optically isolated" means that at a given point in time, only a single particle/molecule within a region of a size determined by conventional optical resolution (typically approx. 200–250 nm diameter) is being registered. This is possible when molecules within such a region all carry different spectral markers (e.g. different colors or other usable differences in the light emission of different particles).  Many standard fluorescent dyes like GFP, Alexa dyes, Atto dyes, Cy2/Cy3 and fluorescein molecules can be used for localization microscopy, provided certain photo-physical conditions are present. Using this so-called SPDMphymod (physically modifiable fluorophores) technology a single laser wavelength of suitable intensity is sufficient for nanoimaging.

3D super resolution microscopy.

3D super resolution microscopy with standard fluorescent dyes can be achieved by combination of localization microscopy for standard fluorescent dyes SPDMphymod and structured illumination SMI.

STED.

Stimulated emission depletion is a simple example of how higher resolution surpassing the diffraction limit is possible, but it has major limitations. STED is a fluorescence microscopy technique which uses a combination of light pulses to induce fluorescence in a small sub-population of fluorescent molecules in a sample. Each molecule produces a diffraction-limited spot of light in the image, and the centre of each of these spots corresponds to the location of the molecule. As the number of fluorescing molecules is low the spots of light are unlikely to overlap and therefore can be placed accurately. This process is then repeated many times to generate the image. Stefan Hell of the Max Planck Institute for Biophysical Chemistry was awarded the 10th German Future Prize in 2006 and Nobel Prize for Chemistry in 2014 for his development of the STED microscope and associated methodologies.

Alternatives.

In order to overcome the limitations set by the diffraction limit of visible light other microscopes have been designed which use other waves.  It is important to note that higher frequency waves have limited interaction with matter, for example soft tissues are relatively transparent to X-rays resulting in distinct sources of contrast and different target applications.  The use of electrons and X-rays in place of light allows much higher resolution – the wavelength of the radiation is shorter so the diffraction limit is lower. To make the short-wavelength probe non-destructive, the atomic beam imaging system (atomic nanoscope) has been proposed and widely discussed in the literature, but it is not yet competitive with conventional imaging systems.  STM and AFM are scanning probe techniques using a small probe which is scanned over the sample surface. Resolution in these cases is limited by the size of the probe; micromachining techniques can produce probes with tip radii of 5–10 nm.  Additionally, methods such as electron or X-ray microscopy use a vacuum or partial vacuum, which limits their use for live and biological samples (with the exception of an environmental scanning electron microscope). The specimen chambers needed for all such instruments also limits sample size, and sample manipulation is more difficult. Color cannot be seen in images made by these methods, so some information is lost. They are however, essential when investigating molecular or atomic effects, such as age hardening in aluminium alloys, or the microstructure of polymers.

The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although many complex designs aim to improve resolution and sample contrast.

Lichtmikroskope (von griechisch "μικρόν" ("micrón") = „klein“, und "σκοπεῖν" ("skopein") = „etwas ansehen“) sind Mikroskope, die stark vergrößerte Bilder von kleinen Strukturen oder Objekten mit Hilfe von Licht erzeugen. Die Vergrößerung erfolgt gemäß den Gesetzen der Optik unter Ausnutzung von Lichtbrechung an Glaslinsen.


History.

In the mid-1980s, Microsoft and IBM formed a joint project to create the next generation of graphical operating system; the result was OS/2 and HPFS. Because Microsoft disagreed with IBM on many important issues, they eventually separated; OS/2 remained an IBM project and Microsoft worked to develop Windows NT and NTFS.  The HPFS file system for OS/2 contained several important new features. When Microsoft created their new operating system,

Versions.

Microsoft has released five versions of NTFS:  The version number (e.g. v5.0 in Windows 2000) is based on the operating system version; it should not be confused with the NTFS version number (v3.1 since Windows XP).

Features.

NTFS v3.0 includes several new features over its predecessors: sparse file support, disk use quotas, reparse points, distributed link tracking, and file-level encryption called the Encrypting File System (EFS).

Scalability.

NTFS is optimized for 4 KB clusters, but supports a maximum cluster size of 2MB. (Earlier implementations support up to 64KB) The maximum NTFS volume size that the specification can support is clusters, but not all implementations achieve this theoretical maximum, as discussed below.  The maximum NTFS volume size implemented in Windows XP Professional is clusters, partly due to partition table limitations. For example, using 64KB clusters, the maximum size Windows XP NTFS volume is 256TB minus 64KB. Using the default cluster size of 4KB,

Journaling.

NTFS is a journaling file system and uses the NTFS Log ($LogFile) to record metadata changes to the volume. It is a feature that FAT does not provide and critical for NTFS to ensure that its complex internal data structures will remain consistent in case of system crashes or data moves performed by the defragmentation API, and allow easy rollback of uncommitted changes to these critical data structures when the volume is remounted. Notably affected structures are the volume allocation bitmap, modifications to MFT records such as moves of some variable-length attributes stored in MFT records and attribute lists, and indices for directories and security descriptors.  The ($LogFile) format has evolved through several versions:

Hard links.

The hard link feature allows different file names to directly refer to the same file contents. Hard links are similar to directory junctions, but refer to files instead. Hard links may link only to files in the same volume, because each volume has its own MFT. Hard links have their own file metadata, so a change in file size or attributes under one hard

Alternate data streams (ADS).

Alternate data streams allow more than one data stream to be associated with a filename (a fork), using the format "filename:streamname" (e.g., "text.txt:extrastream").  NTFS Streams were introduced in Windows NT 3.1, to enable Services for Macintosh (SFM) to store resource forks. Although current versions of Windows Server no longer include SFM, third-party Apple Filing Protocol (AFP) products (such as GroupLogic's ExtremeZ-IP) still use this feature of the file system. Very small ADS (named "Zone.Identifier") are added by Internet Explorer and recently by other browsers to mark files downloaded from external sites as possibly unsafe to run; the local shell would then

File compression.

NTFS can compress files using LZNT1 algorithm (a variant of LZ77) Files are compressed in 16 cluster chunks. With 4 KB clusters, files are compressed in 64 KB chunks. The compression algorithms in NTFS are designed to support cluster sizes of up to 4 KB. When the cluster size is greater than 4 KB on an NTFS volume, NTFS compression is not available. If the compression reduces 64KB of data to 60KB or less, NTFS treats the unneeded 4KB pages like empty sparse file clusters—they are not written. This allows for reasonable random-access times as the OS just has to follow the chain of fragments.  However, large compressible files become highly fragmented since every chunk smaller than 64KB becomes a fragment. According to research by Microsoft's NTFS Development team, 50–60GB is a reasonable maximum size for a compressed file on an NTFS volume with a 4KB (default) cluster (block) size. This reasonable maximum size decreases sharply for volumes with smaller cluster

Sparse files.

Sparse files are files interspersed with empty segments for which no actual storage space is used. To the applications, the file looks like an ordinary file with empty regions seen as regions filled with zeros.

Volume Shadow Copy.

The Volume Shadow Copy Service (VSS) keeps historical versions of files and folders on NTFS volumes by copying old, newly overwritten data to shadow copy via copy-on-write technique. The user may later request an earlier version to be recovered. This also allows data backup programs to archive files

Transactions.

As of Windows Vista, applications can use Transactional NTFS (TxF) to group multiple changes to files together into a single transaction. The transaction will guarantee that either all of the changes happen, or none of them do, and that no application outside the transaction will see the changes until they are committed.  It uses similar techniques as those used for Volume Shadow Copies (i.e. copy-on-write) to ensure that overwritten data can be safely rolled back, and a CLFS log to mark the transactions that have still not been committed, or those that have been committed but still not fully applied (in case of system

Security.

In NTFS, each file or folder is assigned a security descriptor that defines its owner and contains two access control lists (ACLs). The first ACL, called discretionary access control list (DACL), defines exactly what type of interactions (e.g. reading, writing, executing or deleting) are allowed or forbidden by which user or groups of users. For example, files in the folder may be read and executed by all users but

Encryption.

Encrypting File System (EFS) provides strong and user-transparent encryption of any file or folder on an NTFS volume. EFS works in conjunction with the EFS service, Microsoft's CryptoAPI and the EFS File System Run-Time Library (FSRTL). EFS works by encrypting a file with a bulk symmetric key (also known as the File Encryption Key, or FEK), which is used because it takes a relatively small amount of time to encrypt and decrypt large amounts of data than if an asymmetric key cipher is used. The symmetric key that is used to encrypt the file is then encrypted with a public key that is associated with the user who encrypted

Quotas.

Disk quotas were introduced in NTFS v3. They allow the administrator of a computer that runs a version of Windows that supports NTFS to set a threshold of disk space that users may use. It also allows administrators to keep track of how much disk space each user is using.

Reparse points.

Introduced in NTFS v3, NTFS reparse points are used by associating a reparse tag in the user space attribute of a file or directory. Microsoft includes several default tags including symbolic links, directory junction points and volume mount points. When the Object Manager parses a file

Resizing.

Starting with Windows Vista Microsoft added the built-in ability to shrink or expand a partition. However, this ability does not relocate page file fragments or files that

Internals.

Internally, NTFS uses B-trees to index file system data. A file system journal is used to guarantee the integrity of the file system metadata but not individual files' content. Systems using NTFS are known to have improved reliability compared to FAT file systems.  NTFS allows any sequence of 16-bit values for name encoding (file names, stream names, index names, etc.) except 0x0000. This means UTF-16 code units are supported, but the file system does not check whether a sequence is valid UTF-16 (it allows any sequence of short values, not restricted to those in the Unicode standard). In Win32 namespace, any UTF-16 code units are case insensitive whereas in POSIX namespace they are case sensitive. File names are limited to 255 UTF-16 code units. Certain names are reserved in the volume root directory and cannot be used for files. These are codice_1, codice_2, codice_3, codice_4, codice_5, codice_6 (dot), codice_7, codice_8, codice_9, codice_10, codice_11, and codice_12. codice_6 (dot) and codice_12 are both directories; the others are files. The NT kernel limits full paths to 32,767 UTF-16 code units. There are some additional restrictions on code points and file names.

Partition Boot Sector (VBR).

This boot partition format is roughly based upon the earlier FAT filesystem, but the fields are in different locations. Some of these fields, especially the "sectors per track", "number of heads" and "hidden sectors" fields may contain dummy values on

Master File Table.

In NTFS, all file, directory and metafile data—file name, creation date, access permissions (by the use of access control lists), and size—are stored as metadata in the Master File Table (MFT). This abstract approach allowed easy addition of file system features during Windows NT's development—an example is the addition of fields for indexing used by the Active Directory software. This also enables fast file search software to locate named local files and folders

Metafiles.

NTFS contains several files that define and organize the file system. In all respects, most of these files are structured like any other user file ($Volume being the most peculiar), but are not of direct interest to file system clients. These metafiles define files, back up critical file system data, buffer file system changes, manage free space allocation, satisfy BIOS expectations, track bad allocation units, and store security and disk space usage information. All content is in an unnamed data stream, unless otherwise indicated.  These metafiles are treated specially by Windows, handled directly by the codice_15 driver and are difficult to directly view: special purpose-built

Attribute lists, attributes, and streams.

For each file (or directory) described in the MFT record, there is a linear repository of stream descriptors (also named "attributes"), packed together in one or more MFT records (containing the so-called "attributes list"), with extra padding to fill the fixed 1 KB size of every MFT record, and that fully describes the effective streams associated with that file.  Each attribute has an attribute type (a fixed-size integer mapping to an attribute definition in file $AttrDef), an optional attribute name (for example, used as the name for an alternate data stream), and a value, represented in a sequence of bytes. For NTFS, the standard data of files, the alternate data streams, or the

Resident vs. non-resident attributes.

To optimize the storage and reduce the I/O overhead for the very common case of attributes with very small associated value, NTFS prefers to place the value within the attribute itself (if the size of the attribute does not then exceed the maximum size of an MFT record), instead of using the MFT record space to list clusters containing the data; in that case, the attribute will not store the data directly but will just store an allocation map (in the form of "data runs") pointing to the actual data stored elsewhere on the volume. When the value can be accessed directly from within the attribute, it is called "resident data" (by computer forensics workers). The amount of data that fits is highly dependent on the file's characteristics, but 700 to 800 bytes is common in single-stream files with non-lengthy filenames and no ACLs.  The allocation map is stored in a form of "data runs" with compressed

Opportunistic locks.

Opportunistic file locks (oplocks) allow clients to alter their buffering strategy for a given file or stream in order to increase performance and reduce network use. Oplocks apply to the given open stream of a file and do not affect oplocks on a different stream.  Oplocks

Time.

Windows NT and its descendants keep internal timestamps as UTC and make the appropriate conversions for display purposes; all NTFS timestamps are in UTC.  For historical reasons, the versions of Windows that do not support NTFS all keep time internally as local zone time, and therefore so do all file systems – other than NTFS – that are supported by current versions of Windows. This means that when files are copied

Interoperability.

While the different NTFS versions are for the most part fully forward- and backward-compatible, there are technical considerations for mounting newer NTFS volumes in older versions of Microsoft Windows. This affects dual-booting, and external portable hard drives. For example, attempting to use an NTFS partition with "Previous Versions" (a.k.a. Volume Shadow Copy) on an operating system that does not support it will result in the contents of those previous versions being lost. A Windows command-line utility called convert.exe can convert supporting file systems to

Implementations.

FreeBSD 3.2 released in May 1999 included read-only NTFS support written by Semen Ustimenko. This implementation was ported to NetBSD by Christos Zoulas and Jaromir Dolecek and released with NetBSD 1.5 in The FreeBSD implementation of NTFS was also ported to OpenBSD by Julien Bordet and offers native read-only NTFS support by default on i386 and amd64 platforms as of version 4.9 released 1 May 2011.  Linux kernel versions 2.2.0 and later include the ability to read NTFS partitions; kernel versions 2.6.0 and later contain a driver written by Anton Altaparmakov (University of Cambridge) and Richard Russon which supports file read, overwrite and resize. Due to the complexity of internal NTFS structures the built-in 2.6.14 kernel driver disallows changes to the volume that are considered unsafe, to avoid corruption.  Mac OS X 10.3 included Ustimenko's read-only implementation of NTFS from FreeBSD. Then Apple hired Anton Altaparmakov to write a new NTFS implementation for Mac OS X 10.6. Native NTFS write support has been discovered in 10.6 and later, but is not activated by default, although workarounds do exist to enable the functionality. However, user reports indicate the functionality is unstable and tends to cause "kernel panics", probably the reason why write support has not been enabled or advertised.  Captive NTFS, a 'wrapping' driver that uses Windows' own driver ntfs.sys, exists for Linux. It was built as a Filesystem in Userspace (FUSE) program and released under the GPL but work on Captive NTFS ceased in 2006.  NTFS-3G is a free GPL-licensed FUSE implementation of NTFS that was initially developed for as a Linux kernel driver by Szabolcs Szakacsits. It was re-written as a FUSE program to work on other systems that FUSE supports like macOS, FreeBSD, NetBSD, OpenBSD, Solaris, QNX and Haiku and allows reading and writing to NTFS partitions. A performance enhanced commercial version of NTFS-3G, called "Tuxera NTFS for Mac", is also available from the NTFS-3G developers.  Paragon Software Group sells a read-write driver named "NTFS for Mac OS X", which is also included on some models of Seagate hard drives.  eComStation offers a read-only NTFS support. There is a beta NTFS driver that allows write/delete for eComStation, but is generally considered unsafe.  There is a free-for-personal-use read/write driver for MS-DOS by Avira called "NTFS4DOS".  Ahead Software developed a "NTFSREAD" driver (version 1.200) for DR-DOS 7.0x between 2002 and 2004. It was part of their Nero Burning ROM software.

NTFS (NT File System) is a proprietary journaling file system developed by Microsoft. Starting with Windows NT 3.1, it is the default file system of the Windows NT family.

NTFS ist ein proprietäres Dateisystem von Microsoft für alle Betriebssysteme der Windows-NT-Reihe. Die Abkürzung steht für New Technology File System.


Life and career.

Bengel was born at Winnenden in Württemberg. Due to the death of his father in 1693, he was educated by a family friend, David Wendel Spindler, who became a master in the gymnasium at Stuttgart. In 1703 Bengel left Stuttgart and entered the University of Tübingen as a student at the "Tübinger Stift", where, in his spare time, he devoted himself especially to the works of Aristotle and Spinoza, and, in theology, to those of Philipp Spener, Johann Arndt and August Francke. His knowledge of the metaphysics of Spinoza was such that he was selected by one of the professors to prepare materials for a treatise, "De Spinosismo", which was afterwards published.  After acquiring his degree, Bengel devoted himself to theology. Even at this time he had religious doubts; it is interesting in view of his later work that one cause of his perplexities was the difficulty of ascertaining the true reading of certain passages in the Greek New Testament. Bengel entered the ministry in 1707 and was appointed to the parochial charge of Metzingen-unter-Urach. In the following year he was recalled to Tübingen to undertake the office of "Repetent" (theological tutor).  He remained at Tübingen until 1713, when he was appointed head of a seminary recently established at Denkendorf as a preparatory school of theology. Before entering into his new duties he travelled through the greater part of Germany, studying the systems of education which were in use, and visiting the seminaries of the Jesuits as well as those of the Lutheran and Reformed churches. Among other places he went to Heidelberg and Halle, and had his attention directed at Heidelberg to the canons of scripture criticism published by Gerhard von Maastricht, and at Halle to Campeius Vitringa's "Anacrisis ad Apocalypsin". The influence exerted by these upon his theological studies is manifest in some of his works.  For 28 years, from 1713 to 1741, he was master () of the "Klosterschule" at Denkendorf, a seminary for candidates for the ministry established in a former monastery of the Canons of the Holy Sepulchre. To these years, the period of his greatest intellectual activity, belong many of his chief works.  In 1741 he was appointed prelate (i.e. general superintendent) at Herbrechtingen, where he remained until 1749, when he was raised to the dignity of consistorial counsellor and prelate of Alpirsbach, with a residence in Stuttgart. He devoted himself to the discharge of his duties as a member of the consistory. A question of considerable difficulty was at that time occupying the attention of the church courts: the manner in which those who separated themselves from the church were to be dealt with, and the amount of toleration which should be accorded to meetings held in private houses for the purpose of religious edification. The civil power (the Duke of Württemberg was a Roman Catholic) was disposed to have recourse to measures of repression, while the members of the consistory, recognizing the good effects of such meetings, were inclined to concede considerable liberty. Bengel exerted himself on the side of the members of the consistory. In 1751 the University of Tübingen conferred upon him the degree of Doctor of Divinity. He died in Stuttgart, aged 65.  Bengel carried on an 18-year-long controversy with Nicolaus Ludwig, Count von Zinzendorf, leader of the Moravian Brethren from Herrnhut in Saxony. This led to a break between the Moravian Brethren and the dour Pietism typical of Württemberg, represented by Bengel. With his determined certainty giving him systematic insight into the divine Plan of Salvation, Bengel dogmatically opposed the dynamic, ecumenical, missionary efforts of Zinzendorf, who was indifferent to all dogmatism and intolerance. As Bengel did not hesitate to manipulate historical calendars in his chiliastic attempts to predict the end of the world, Zinzendorf rejected this as superstitious “interpretation of signs.”  His reputation as a Biblical scholar and critic rests chiefly on his edition of the Greek New Testament (1734) and his exegetical annotations on the same, which have passed through many editions in Latin, German, and English and are still highly valued by expositors of the New Testament.

Greek New Testament.

Bengel's edition of the Greek New Testament was published at Tübingen in 1734, and at Stuttgart in the same year, but without the critical apparatus. As early as 1725, in an addition to his edition of "Chrysostoms De Sacerdotio", he had given an account in his "Prodromus Novi Testamenti Graeci recte cauteque adornandi" of the principles on which his intended edition was to be based. In preparation for his work, Bengel was able to avail himself of the collations of upwards of twenty manuscripts, none of them, however, of great importance, twelve of which had been collated by himself. In constituting the text, he imposed upon himself the singular restriction of not inserting any variant reading which had not already been printed in some preceding edition of the Greek text. From this rule, however, he deviated in the case of the Apocalypse, where, owing to the corrupt state of the text, he felt himself at liberty to introduce certain readings on manuscript authority. In the lower margin of the page he inserted a selection of various readings, the relative importance of which he denoted by the first five letters of the Greek alphabet in the following manner: α was employed to denote the reading which in his judgment was the true one, although he did not venture to place it in the text; β, a reading better than that in the text; γ, one equal to the textual reading; and δ, readings inferior to those in the text. Robert Estienne's division into verses was retained in the inner margin, but the text was divided into paragraphs.  The text was followed by a critical apparatus, the first part of which consisted of an introduction to the criticism of the New Testament, in the thirty-fourth section of which he laid down and explained his celebrated canon, "Proclivi scriptioni praestat ardua" (The difficult reading is to be preferred to that which is easy), the soundness of which, as a general principle, has been recognized by succeeding critics. The second part of the critical apparatus was devoted to a consideration of the various readings, and here Bengel adopted the plan of stating the evidence both against and in favor of a particular reading, thus placing before the reader the materials for forming a judgment. Bengel was the first definitely to propound the theory of families or recensions of manuscripts.  His investigations had led him to see that a certain affinity or resemblance existed amongst many of the authorities for the Greek text manuscripts, versions, and ecclesiastical writers: for example, if a peculiar reading was found in one of these, it was generally also found in the other members of the same class; and this general relationship seemed to point ultimately to a common origin for all the authorities which presented such peculiarities. Although disposed at first to divide the various documents into three classes, he finally adopted a classification into two: the African or older family of documents, and the Asiatic, or more recent class, to which he attached only a subordinate value. The theory was afterwards adopted by J.S. Semler and J.J. Griesbach, and worked up into an elaborate system by the latter critic.  Bengel's labors on the text of the Greek Testament were received with great disfavour in many quarters. Like Brian Walton and John Mill before him, he had to encounter the opposition of those who believed that the certainty of the word of God was endangered by the importance attached to the various readings. JJ Wetstein, on the other hand, accused him of excessive caution in not making freer use of his critical materials. In answer to these strictures, Bengel published a "Defence of the Greek Text of His New Testament", which he prefixed to his "Harmony of the Four Gospels", published in 1736, and which contained an answer to the complaints, especially of Wetstein, which had been made against him.  The text of Bengel long enjoyed a high reputation among scholars, and has been frequently reprinted. An enlarged edition of the critical apparatus was published by Philip David Burk in 1763.

"Gnomon Novi Testamenti".

The other great work of Bengel, and that on which his reputation as an exegete is mainly based, is his "Gnomon Novi Testamenti", or "Exegetical Annotations on the New Testament", published in 1742. It was the fruit of twenty years labor, and exhibits with a brevity of expression, which, it has been said, condenses more matter into a line than can be extracted from pages of other writers, the results of his study. He modestly entitled his work a "Gnomon" or index, his object being rather to guide the reader to ascertain the meaning for himself, than to save him from the trouble of personal investigation. The principles of interpretation on which he proceeded were, to import nothing into Scripture, but to draw out of it everything that it really contained, in conformity with grammatico-historical rules not to be hampered by dogmatical considerations; and not to be influenced by the symbolical books. Bengel's hope that the "Gnomon" would help to rekindle a fresh interest in the study of the New Testament was fully realized. It has passed through many editions, has been translated into German and into English (by Marvin Vincent in 1860), and is still valued by expositors of the New Testament. John Wesley made great use of it in compiling his "Expository Notes upon the New Testament" (1755).  Besides the two works already described, Bengel was the editor or author of many others, classical, patristic, ecclesiastical and expository. The more important are: "Ordo Temporum", a treatise on the chronology of Scripture, in which he enters upon speculations regarding the end of the world, and an "Exposition of the Apocalypse" which enjoyed for a time great popularity in Germany, and was translated into several languages. His fame was such that almost 200 years later, Hermann Hesse has the hero of The Glass Bead Game discuss Bengel's writings.

Johann Albrecht Bengel (24 June 1687 – 2 November 1752), also known as "Bengelius", was a Lutheran pietist clergyman and Greek-language scholar known for his edition of the Greek New Testament and his commentaries on it.

Johann Albrecht Bengel (* 24. Juni 1687 in Winnenden; † 2. November 1752 in Stuttgart) war ein schwäbischer lutherischer Theologe und ein Hauptvertreter des deutschen Pietismus.


Etymology.

Fiji's main island is known as Viti Levu and it is from this that the name "Fiji" is derived, though the common English pronunciation is based on that of their island neighbours in Tonga. Its emergence can be described as follows: Fijians first impressed themselves on European consciousness through the writings of the members of the expeditions of Cook who met them in Tonga. They were

History.

Early settlement and development of Fijian culture.

Located in the central Pacific Ocean, Fiji's geography has made it both a destination and a crossroads for migrations for many centuries. According to oral tradition, the indigenous Fijians of today are descendants of the chief Lutunasobasoba and those who arrived with him on the Kaunitoni canoe. Landing at what is now Vuda, the settlers moved inland to the Nakauvadra mountains. Though this oral tradition has not been independently substantiated, the Fijian government officially promotes it, and many tribes today claim to be descended from the children of Lutunasobasoba.  Pottery art from Fijian towns shows that Fiji was settled by Austronesian peoples before or around 3500 to 1000 BC, with Melanesians following around a thousand years later, although the question of Pacific migration still lingers. It is believed that the Lapita people or the ancestors of the Polynesians settled the islands first but not much is known of what became of them after the Melanesians arrived; they may have

Early interaction with Europeans.

Dutch explorer Abel Tasman was the first known European visitor to Fiji, sighting the northern island of Vanua Levu and the North Taveuni archipelago in 1643 while looking for the Great Southern Continent.  James Cook, the British navigator, visited one of the southern Lau islands in 1774. It was not until 1789, however, that the islands were charted and plotted, when William Bligh, the castaway captain of, passed Ovalau and sailed between the main islands of Viti Levu and Vanua Levu en route to Batavia, in what is now Indonesia. Bligh Water, the strait between the two main islands, is named after him,

Cakobau and the wars against Christian infiltration.

The 1840s was a time of conflict where various Fiji clans attempted to assert dominance over each other. Eventually, a warlord by the name of Seru Epenisa Cakobau of Bau Island was able to become a powerful influence in the region. His father was Ratu Tanoa Visawaqa, the Vunivalu (a chiefly title meaning "Warlord," often translated also as "Paramount Chief") who had previously subdued much of western Fiji. Cakobau, following on from his father, became so dominant that he was able

Cotton, confederacies and the Kai Colo.

The rising price of cotton in the wake of the American Civil War (1861–1865) caused an influx of hundreds of settlers to Fiji in the 1860s from Australia and the United States in order to obtain land and grow cotton. Since there was still a lack of functioning government in Fiji, these planters were often able to get the land in violent or fraudulent ways such as exchanging weapons or alcohol with Fijians who may or may not have been the true owners. Although this made for cheap land acquisition, competing land claims between the planters became problematic with no unified government to resolve the disputes. In 1865, the settlers proposed a confederacy of the seven main native kingdoms in Fiji to establish some sort of government. This was initially successful and Cakobau was elected as the first president of the confederacy. With

Kingdom of Fiji (1871–1874).

After the collapse of the confederacy, Ma'afu established a stable administration in the Lau Islands and the Tongans, therefore, were again becoming influential. Other foreign powers such as the United States were also considering the possibility of annexing Fiji. This situation was not appealing to many settlers, almost all of whom were British subjects from Australia. Britain, however, still refused to annex the country and subsequently a compromise was needed.  In June 1871, George Austin Woods, an ex-lieutenant of the Royal Navy, managed to influence Cakobau and organise a group of like-minded settlers and chiefs into forming a governing administration. Cakobau was declared the monarch ("Tui Viti") and the Kingdom of Fiji was established. Most Fijian chiefs agreed to participate and even Ma'afu chose to recognise Cakobau and participate in the constitutional monarchy. However, many of the settlers had come from British colonies like Victoria and New South Wales where negotiation with

Blackbirding and slavery in Fiji.

The blackbirding era began in Fiji in 1865 when the first New Hebridean and Solomon Island labourers were transported there to work on cotton plantations. The American Civil War had cut off the supply of cotton to the international market when the Union blockaded Confederate ports. Cotton cultivation was potentially an extremely profitable business. Thousands of European planters flocked to Fiji to establish plantations but found the natives unwilling to adapt to their plans. They sought labour from the Melanesian islands. On 5 July 1865 Ben Pease received the first licence to provide 40 labourers from

Colonisation.

Despite achieving military victories over the Kai Colo, the Cakobau government was faced with problems of legitimacy and economic viability. Indigenous Fijians and white settlers refused to pay taxes and the cotton price had collapsed. With these major issues in mind, John Bates Thurston approached the British government, at Cakobau's request, with another offer to cede the islands. The newly elected Tory British government under Benjamin Disraeli encouraged expansion of the empire and was therefore much more sympathetic to annexing Fiji than it had been previously. The murder of Bishop John Coleridge Patteson of the Melanesian Mission at Nukapu in the Reef Islands had

Measles epidemic of 1875.

To celebrate the annexation of Fiji, Hercules Robinson, who was Governor of New South Wales at the time, took Cakobau and his two sons to Sydney. There was a measles outbreak in that city and the three Fijians all came down with the disease. On returning to Fiji, the colonial administrators decided not to quarantine the ship that the convalescents travelled in. This was despite the British having a very extensive knowledge of the devastating effect of infectious disease on an unexposed population. In 1875–76 the resulting epidemic of measles killed over 40,000 Fijians, about one-third of the Fijian population. Some Fijians who survived were of the opinion that this failure of quarantine was a deliberate action to introduce the disease into the country. Whether this is the case or not, the decision, which was one of the first acts of British control in Fiji, was at the very least grossly negligent.

Indian indenture system in Fiji.

Gordon decided in 1878 to import indentured labourers from India to work on the sugarcane fields that had taken the place of the cotton plantations. The 463 Indians arrived on 14 May 1879 – the first of some 61,000 that were to come before the scheme ended in 1916. The plan involved bringing the Indian workers to Fiji on a five-year contract, after which they could return to India at their own expense; if they chose to renew their contract for a second five-year term, they would be

The Tuka rebellions.

With almost all aspects of indigenous Fijian social life being controlled by British authorities, a number of charismatic individuals preaching dissent and return to pre-colonial culture were able to forge a following amongst the disenfranchised. These movements were called Tuka, which roughly translates as "those who stand up". The first Tuka movement, was led by Ndoongumoy, better known as Navosavakandua which means "he who speaks only once". He told his followers that if they returned to traditional ways and worshipped traditional deities such as Degei and Rokola, their current condition would be transformed with the whites and their puppet Fijian chiefs being subservient to them. Navosavakandua was previously exiled from the Viti Levu highlands in 1878 for disturbing the peace and the British quickly arrested him and his followers after this open display of rebellion. He was again exiled, this time to Rotuma where he died

Fiji in World War I and II.

Fiji was only peripherally involved in World War I. One memorable incident occurred in September 1917 when Count Felix von Luckner arrived at Wakaya Island, off the eastern coast of Viti Levu, after his raider,, had run aground in the Cook Islands following the shelling of Papeete in the French territory of Tahiti. On 21 September, the district police inspector took a number of Fijians to Wakaya, and von Luckner, not realising that they were unarmed, unwittingly surrendered.  Citing unwillingness to exploit the Fijian people, the colonial authorities did not permit Fijians to enlist. One Fijian of chiefly rank, a greatgrandson of Cakobau's, did join the French Foreign Legion, however, and received France's highest military decoration, the Croix de Guerre. After going on to complete a Law degree at

Responsible government.

A constitutional conference was held in London in July 1965, to discuss constitutional changes with a view to introducing responsible government. Indo-Fijians, led by A. D. Patel, demanded the immediate introduction of full self-government, with a fully elected legislature, to be elected by universal suffrage on a common voters' roll. These demands were vigorously rejected by the ethnic Fijian delegation, who still feared loss of control over natively owned land and resources should an Indo-Fijian dominated government come to power. The British made it clear, however, that they were determined to bring Fiji to self-government and eventual independence. Realizing that they had no choice, Fiji's chiefs decided to negotiate for the best deal they could get.  A series of compromises led to the

Independence (1970).

The British granted Fiji independence in 1970. Democratic rule was interrupted by two military coups in 1987 precipitated by a growing perception that the government was dominated by the Indo-Fijian (Indian) community. The second 1987 coup saw both the Fijian monarchy and the Governor General replaced by a non-executive president and the name of the country changed from "Dominion of Fiji" to "Republic of Fiji" and then in 1997 to "Republic of the Fiji Islands". The two coups and the accompanying civil unrest contributed to heavy Indo-Fijian emigration; the resulting population loss resulted in economic difficulties and ensured that Melanesians

Geography.

Fiji covers a total area of some of which around 10% is land.  Fiji is the hub of the South West Pacific, midway between Vanuatu and Tonga. The archipelago is located between 176° 53′ east and 178° 12′ west. The archipelago is roughly 498,000 square miles and less than 2 percent is dry land.The 180° meridian runs through Taveuni but the International Date Line is bent to give uniform time (UTC+12) to all of the Fiji group. With the exception of Rotuma, the Fiji group lies between 15° 42′ and 20° 02′ south. Rotuma is located north of the group, from Suva, 12° 30′ south of the equator. Fiji lies approximately 5,100 km southwest of Hawaii and roughly 3,150 km from Sydney, Australia.  Fiji consists of 332 islands (of which 106 are inhabited) and 522 smaller islets. The two most important islands are Viti Levu and Vanua Levu, which account for about three-quarters of the total land area of the country. The islands are mountainous, with peaks up to 1,324 metres (4,341 ft), and covered with thick tropical forests.  The highest point is Mount Tomanivi on Viti Levu. Viti Levu hosts the capital city of Suva, and is home to nearly three-quarters of the population. Other important towns include Nadi (the location of the international airport), and Lautoka, Fiji's second city with large sugar cane mills and a seaport.  The main towns on Vanua Levu are Labasa and Savusavu. Other islands and island groups include Taveuni and Kadavu (the third and fourth largest islands, respectively), the Mamanuca Group (just off Nadi) and Yasawa Group, which are popular tourist destinations, the Lomaiviti Group, off Suva, and the remote Lau Group. Rotuma, some north of the archipelago, has a special administrative status in Fiji. Ceva-i-Ra, an uninhabited reef, is located about southwest of the main archipelago.

Climate.

The climate in Fiji is tropical marine and warm year round with minimal extremes. The warm season is from November to April and the cooler season lasts from May to October. Temperatures in the cool season still average. Rainfall is variable, with the warm season experiencing heavier rainfall, especially inland. For the larger islands, rainfall

Politics.

Politics in Fiji normally take place in the framework of a parliamentary representative democratic republic wherein the Prime Minister of Fiji is the head of government and the

Regional and international associations.

Fiji is heavily engaged with or has membership in Pacific regional development organisations. It has been a leading member of the Pacific Community since 1971 and hosts the largest SPC presence of any Pacific nation.  Fiji is also home to many international organisation regional offices including:  Global Environment Facility (GEF) United Nations Children’s Fund (UNICEF) World Health Organization (WHO) International Labour Organization (ILO) United Nations Population Fund (UNFPA) United Nations Entity for Gender Equality and the Empowerment of Women (UN Women) Joint United Nations Programme on HIV/AIDS (UNAIDS) Office of the United Nations High Commissioner for Human Rights (OHCHR) United Nations ESCAP Subregional Office for the Pacific (UN-ESCAP) UN Office for the Coordination of the Humanitarian Affairs in the Pacific (UNOCHA) UN International Strategy for Disaster Reduction Subregional Office for the Pacific (UNISDR) United Nations Department of Safety and Security (UNDSS) International Monetary Fund Regional Office for Asia and the Pacific (IMF) United Nations Human Settlement Programme Regional Office for Asia and the Pacific (UN-Habitat) United Nations Volunteers (UNV) United Nations Conference on Trade and Development (UNCTD) International Fund for Agricultural Development (IFAD) United Nations Capital Development Fund (UNCDF) United Nations Office on Drugs and Crime (UNODC)

2006 military takeover.

Citing corruption in the government, Commodore Frank Bainimarama, Commander of the Republic of Fiji Military Forces, staged a military takeover on 5 December 2006 against the prime minister that he had installed after a 2000 coup. There had also been a military coup in 1987. The commodore took over the powers of the presidency and dissolved the parliament, paving the way for the military to continue the takeover. The coup was the culmination of weeks of speculation following conflict between the elected prime minister, Laisenia Qarase, and Commodore Bainimarama. Bainimarama had repeatedly issued demands and deadlines to the prime minister. A particular issue was previously pending legislation to pardon those involved in the 2000

Armed forces and law enforcement.

The military consists of the Republic of Fiji Military Forces (RFMF) with a total manpower of 3,500 active soldiers and 6,000 reservists, and includes a Navy Unit of 300 personnel.

Administrative divisions.

Fiji is divided into Four Major Divisions which are further divided into 14 provinces. They are:  Fiji was also divided

Economy.

Endowed with forest, mineral, and fish resources, Fiji is one of the most developed of the Pacific island economies, though still with a large subsistence sector. Some progress was experienced by this sector when Marion M. Ganey, S.J., introduced credit unions to the islands in the 1950s. Natural resources include timber, fish, gold, copper, offshore oil, and hydropower. Fiji experienced a period of rapid growth in the 1960s and 1970s but stagnated in the 1980s. The coup of 1987 caused further contraction.  Economic liberalisation in the years following the coup created a boom in the garment industry and a steady growth rate despite growing uncertainty regarding land tenure in the sugar industry. The expiration of leases for sugar cane farmers (along with reduced farm and factory efficiency) has led to a decline in sugar production despite subsidies for sugar provided by the EU; Fiji has been the second largest beneficiary of sugar subsidies after Mauritius. Fiji's vital gold mining industry based in Vatukoula, which shut down in 2006, was reactivated in 2008.  Urbanisation and expansion in the service sector have contributed to recent GDP growth. Sugar exports and a rapidly growing tourist industry – with tourists numbering 430,800 in 2003 and increasing in the subsequent years – are the major sources of foreign exchange. Fiji is highly dependent on tourism for revenue. Sugar processing makes up one-third of industrial activity. Long-term problems include low investment and uncertain property rights. The political turmoil in Fiji in the 1980s, the 1990s, and 2000 had a severe impact on the economy, which shrank by 2.8% in 2000 and grew by only 1% in 2001.  The tourism sector recovered quickly, however, with visitor arrivals reaching pre-coup levels in 2002, resulting in a modest economic recovery which continued into 2003 and 2004 but grew by a mere 1.7% in 2005 and by 2.0% in 2006. Although inflation is low, the policy indicator rate of the Reserve Bank of Fiji was raised by 1% to 3.25% in February 2006 due to fears of excessive consumption financed by debt. Lower interest rates have so far not produced greater investment in exports.  However, there has been a housing boom due to declining commercial mortgage rates. The tallest building in Fiji is the fourteen-storey Reserve Bank of Fiji Building in Suva, which was inaugurated in 1984. The Suva Central Commercial Centre, which opened in November 2005, was planned to outrank the Reserve Bank building at seventeen stories, but last-minute design changes ensured that the Reserve Bank building remained the tallest.  Trade and investment with Fiji have been criticised due to the country's military dictatorship. In 2008, Fiji's interim Prime Minister and coup leader Frank Bainimarama announced election delays and said that Fiji would pull out of the Pacific Islands Forum in Niue, where Bainimarama was to have met with Australian Prime Minister Kevin Rudd and New Zealand Prime Minister Helen Clark.  The South Pacific Stock Exchange (SPSE) is the only licensed securities exchange in Fiji and is based in Suva. Its vision is to become a regional exchange.

Science and technology.

Fiji is the only developing Pacific Island country with recent data for gross domestic expenditure on research and development (GERD). The national Bureau of Statistics cites a GERD/GDP ratio of 0.15% in 2012. Private-sector research and development (R&D) is negligible.  Government investment in R&D tends to favour agriculture. In 2007, agriculture and primary production accounted for just under half of government expenditure on R&D, according to the Fijian National Bureau of Statistics. This share had risen to almost 60% by 2012. However, scientists publish much more in the field of geosciences and health than in agriculture.  The rise in government spending on agricultural research has come to the detriment of research in education, which dropped to 35% of total research spending between 2007 and 2012. Government expenditure on

Society.

Demographics.

The 2017 census found that the population of Fiji was 884,887, compared to the population of 837,271 in the 2007 census. The population density at the time of the 2007 census was 45.8 inhabitants per

Ethnic groups.

The population of Fiji is mostly made up of native Fijians, who are Melanesians (54.3%), although many also have Polynesian ancestry, and Indo-Fijians (38.1%), descendants of Indian contract labourers brought to the islands by the British colonial powers in the 19th century. The percentage of the population of Indo-Fijian descent has declined significantly over the last two decades due to migration for various reasons. Indo-Fijians suffered reprisals for a period after the Fiji coup of 2000. There is also a small but

Family groups.

The concept of family and community is of great importance to Fijian culture. Within the indigenous (iTaukei) communities many members of the extended family will adopt particular titles and roles of direct guardians. Kinship is determined through a child's lineage

Demonym.

Within Fiji, many argue that the term "Fijian" refers solely to indigenous Fijians: it denotes an ancestral ethnicity, not a nationality. Constitutionally, citizens of Fiji were previously referred to as "Fiji Islanders" though the term "Fiji Nationals" was used for official purposes. However, the current constitution refers to all Fijian citizens as "Fijians". In August 2008, shortly before the proposed People's Charter for Change, Peace and Progress was due to be released to the public, it was announced that it recommended a change in the name of Fiji's citizens. If the proposal were adopted, all citizens of Fiji, whatever their ethnicity, would be called "Fijians". The proposal would change the English name of indigenous Fijians from "Fijians" to "itaukei", the Fijian language endonym for indigenous Fijians.  Deposed Prime Minister Laisenia Qarase reacted by stating that the name "Fijian" belonged exclusively to indigenous Fijians,

Languages.

Fiji has three official languages under the 1997 constitution (and not revoked by the 2013 Constitution): English, iTaukei (Fijian) and (Fiji) Hindi.  Fijian is an Austronesian language of the Malayo-Polynesian family spoken in Fiji. It has 350,000 first-language speakers, which is less than half the population of Fiji, but another 200,000 speak it as a second language. The

Religion.

According to the 2007 census, 64.4% of the population at the time was Christian, while 27.9% was Hindu, 6.3% Muslim, 0.8% non-religious, 0.3% Sikh, and the remaining 0.3% belonged to other religions. Among Christians, 54% were counted as Methodist, followed by 14.2% Catholic, 8.9% Assemblies of God, 6.0% Seventh-day Adventist, 1.2% Anglican with the remaining 16.1% belonging to other denominations.  The largest Christian denomination is the Methodist Church of Fiji and Rotuma. With 34.6% of the population (including almost two-thirds of ethnic Fijians), the proportion of the population adhering to Methodism is higher in Fiji

Education.

Fiji has a high literacy rate (91.6 percent) and, although there is no compulsory education, more than 85 percent of the children between the ages of 6 to 13 attend primary school. Schooling is free and provided by both public and church-run schools. Generally, the Fijian and Hindu children attend separate schools, reflecting the political split that exists in the nation.

Primary education.

In Fiji, the role of government in education is to provide an environment in which children realise their full potential, and school is free from age 6 to 14. Primary schools are encouraged to develop in interaction with local communities,

Secondary education.

High school education may continue for a total of five years following an entry examination. Students either leave after three years with a Fiji school leaving certificate, or remain on to complete their final two years and qualify for tertiary education.  Entry into the secondary

Tertiary education.

The University of the South Pacific, called the crossroads of the South Pacific because it serves ten English speaking territories in the South Pacific, is the major provider of higher education. Admission to the university requires a secondary school diploma, and all students must take a one-year foundation course at the university regardless of their major. Financing for the university is derived from school fees, funds from the Fiji government and other territories, and aid from Australia, New Zealand, Canada, and the United Kingdom.  In addition to the university, Fiji also has teacher-training colleges, as well as medical, technological, and agricultural schools. Primary school teachers are

Culture.

Fiji's culture is a rich mosaic of indigenous Fijian, Indo-Fijian, Asian and European traditions, comprising social polity, language, food (coming mainly from the sea, plus casava, dalo (taro) and other vegetables), costume, belief systems, architecture, arts, craft, music, dance, and sports.  While indigenous Fijian culture and traditions are very vibrant and are integral components of everyday life for the majority of Fiji's population, Fijian society has evolved over the past century with the introduction of traditions such as Indian and Chinese as well as significant influences from Europe and Fiji's Pacific neighbours, particularly Tonga and Samoa. Thus, the various cultures of Fiji have come together to create a unique multicultural national identity.  Fiji's culture was showcased at the World Exposition held in Vancouver, Canada, in 1986 and more recently at the Shanghai World Expo 2010, along with other Pacific countries in the Pacific Pavilion.

Holidays and festivals.

This is a list of holidays celebrated in Fiji: The exact dates of public holidays vary from year

Sport.

Sports are very popular in Fiji, particularly sports involving physical contact. Fiji's national sport is Rugby Sevens.

Rugby union.

Rugby Union is the most-popular team sport played in Fiji.  The Fiji national sevens side is a popular and successful international rugby sevens team, and has won the Hong Kong Sevens a record eighteen times since its inception in 1976. Fiji has also won the Rugby World Cup Sevens twice — in 1997 and 2005. The Fiji national rugby union sevens team is the reigning Sevens World Series Champions in World Rugby. In 2016, they won Fiji's first ever Olympic medal in the Rugby sevens at the Summer Olympics, winning gold by defeating Great Britain 43–7 in the final.  The national rugby union team has competed at five Rugby World Cup competitions, the first being in 1987, where they reached the quarter-finals. The Fiji national side did not match that feat again until the 2007 Rugby World Cup when they upset Wales 38–34 to progress to the quarter-finals where they lost to the eventual Rugby World Cup winners, South Africa. Fiji also defeated the British and Irish Lions in 1977.  Fiji competes in the Pacific

Rugby league.

The Fiji national rugby league team, nicknamed the Bati (pronounced [mˈbatʃi]), represents Fiji in the sport of rugby league football and has been participating in international competition since 1992. It has competed in the Rugby League World Cup on three occasions, with their best results coming when they made consecutive semi-final appearances in the 2008 Rugby League World Cup, 2013 Rugby League

Rugby war dance (Cibi and Bole) and Fijian hymn.

The Cibi (pronounced "Thimbi") war dance was traditionally performed by the Fiji rugby team before each match. It was replaced in 2012 with the new "Bole" (pronounced "mBolay") war cry.  Tradition holds that the original Cibi was first performed on the rugby field back in 1939 during a tour

Association football.

Association football was traditionally a minor sport in Fiji, popular largely amongst the Indo-Fijian community, but with international funding from FIFA and sound local management over the past decade, the sport has grown in popularity in the wider Fijian community. It is now the second most-popular sport in Fiji, after rugby (union 15's and

Basketball.

Due to the success of Fiji's national basketball teams, the popularity of basketball in Fiji has experienced rapid growth in recent years. In the past, the country only had few basketball courts,

Netball.

Netball is the most popular women's participation sport in Fiji. The national team has been internationally competitive, at

Cricket.

Cricket is a minor sport in Fiji. Cricket Fiji is an Associate member of the International Cricket Council ("ICC").

Fiji ( ; ; Fiji Hindi: फ़िजी, "Fijī"), officially the Republic of Fiji, is an island country in Melanesia, part of Oceania in the South Pacific Ocean about northeast of New Zealand's North Island. Its closest neighbours are Vanuatu to the west, New Caledonia to the southwest, New Zealand's Kermadec Islands to the southeast, Tonga to the east, the Samoas and France's Wallis and Futuna to the northeast, and Tuvalu to the north. Fiji consists of an archipelago of more than 330 islands—of which about 110 are permanently inhabited—and more than 500 islets, amounting to a total land area of about. The most outlying island is Ono-i-Lau. The two major islands, Viti Levu and Vanua Levu, account for 87% of the total population of. The capital, Suva, on Viti Levu, serves as the country's principal cruise-ship port. About three-quarters of Fijians live on Viti Levu's coasts, either in Suva or in smaller urban centres such as Nadi—where tourism is the major local industry—or Lautoka, where the sugar-cane industry is paramount. Due to its terrain, the interior of Viti Levu is sparsely inhabited.

Fidschi, offiziell Republik Fidschi (auf Fidschi: "Viti" bzw. "Matanitu ko Viti"; bzw. "Republic of Fiji"), ist ein Inselstaat im Südpazifik nördlich von Neuseeland und östlich von Australien. Fidschi ist seit 1970 unabhängig und seit 1987 eine Republik mit der Hauptstadt Suva auf der Insel Viti Levu. Seit der demokratischen Wahl am 17. September 2014 ist Fidschi eine parlamentarische Demokratie. Der vorherige Premierminister Frank Bainimarama gewann 59,20 Prozent der Stimmen und wurde damit wiedergewählt.


Early life.

Antoine-Joseph Sax was born on 6 November 1814, in Dinant, in what is now Belgium, to Charles-Joseph Sax and his wife Marie-Joseph (Masson). While his given name was Antoine-Joseph, he was referred to as Adolphe from childhood. His father and mother were instrument designers themselves, who made several changes to the design of the French horn. Adolphe began to make his own instruments at an early age, entering two of his flutes and a clarinet into a competition at the age of 15. He subsequently studied performance on those two instruments as well as voice at the Royal Conservatory of Brussels.  Sax faced many near-death experiences. Over the course of his childhood, he:  His mother once said that "he's a child condemned to misfortune; he won't live." His neighbors called him "little Sax, the ghost".

Career.

After leaving the Royal Conservatory of Brussels, Sax began to experiment with new instrument designs, while his parents continued to make conventional instruments to bring in money. Adolphe's first important invention was an improvement of the bass clarinet design, which he patented at the age of 24. Sax relocated permanently to Paris in 1842 and began working on a new set of instruments. Hector Berlioz was so enamoured of them that he arranged in February 1844 for one of his pieces to be played entirely on Sax's new instruments. These were valved bugles, and although he had not invented the instrument itself, his examples were much more successful than those of his rivals and became known as saxhorns. They came in seven different sizes, and paved the way for the creation of the flugelhorn. Today, saxhorns are sometimes used in concert bands, marching bands and orchestras. The saxhorn also laid the groundwork for the modern euphonium.  Sax also developed the "saxotromba" family, valved brass instruments with narrower bore than the saxhorns, in 1845, though they survived only briefly.  The use of saxhorns spread rapidly. The saxhorn valves were accepted as state-of-the-art in their time and remain largely unchanged today. The advances made by Adolphe Sax were soon followed by the British brass band movement which exclusively adopted the saxhorn family of instruments. The Jedforest Instrumental Band formed in 1854 and The Hawick Saxhorn Band formed in 1855, within the Scottish Borders, a decade after saxhorn models became available.  The period around 1840 saw Sax inventing the "clarinette-bourdon", an early unsuccessful design of contrabass clarinet. Around this time he also developed the instrument for which he is best known: the saxophone, which he patented on 28 June 1846. The saxophone was invented for use in both orchestras and military bands. By 1846 Sax had designed (on paper at least) a full range of saxophones (from sopranino to subcontrabass). Composer Hector Berlioz wrote approvingly of the new instrument in 1842, but despite his support, saxophones never became standard orchestral instruments. However, their ability to play technical passages easily like woodwinds and also project loudly like brass instruments led them to be included in military bands in France and elsewhere. The saxophone was Sax's signature accomplishment and created his reputation more than any other. This helped secure him a job teaching at the Paris Conservatory in 1857.  Sax continued to make instruments later in life and presided over the new saxophone program at the Paris Conservatory. Rival instrument makers both attacked the legitimacy of his patents and were sued by Sax for patent infringement. The legal back-and-forth continued for over 20 years. He was driven into bankruptcy three times: in 1852, 1873, and 1877.  Sax suffered from lip cancer between 1853 and 1858 but made a full recovery. In 1894, Sax died in complete poverty in Paris and was interred in section 5 (Avenue de Montebello) at the Cimetière de Montmartre in Paris.

Honors and awards.

In his birthplace Dinant in Belgium the Mr Sax's House is dedicated to his life and saxophones.

Antoine-Joseph "Adolphe" Sax (; 6 November 1814 – 7 February 1894) was a Belgian inventor and musician who created the saxophone in the early 1840s, patenting it in 1846. He also invented the saxotromba, saxhorn and saxtuba. He played the flute and clarinet.

Adolphe Sax, eigentlich Antoine Joseph Sax, (* 6. November 1814 in Dinant; † 7. Februar 1894 in Paris) war ein belgischer Erfinder, Instrumentenbauer und Musiker; er war der Entwickler der Saxhörner und des Saxophons.