In the Beer Lambert Law (equation 3) the term IT/Io is called transmittance. This form of spectroscopy has a setup similar to the one used for Absorption. Reflectance spectroscopy is the study of light as a function of wavelength that has been reflected or scattered from a solid, liquid, or gas.
Definition of metadata: Data that serves to provide context or additional information about other data. For example, information about the title, subject, author, typeface, enhancements, and size of the data file of a ...
Definition, Types, and Relevance Metadata is a set of data that describes and gives information about other data. Photo metadata allows information to be transported with an image file, in a way that can be understood by other software, hardware, and end users, regardless of the format. Data and information is entered into the image file by users, or by automated capture from cameras or scanners. Metadata is stored in two main places: 1  Internally â embedded in the image file, in formats such as JPEG or TIFF. 2  Externally â outside the image file in a digital asset management system (DAM) or by a âsidecarâ file, such as XMP, or an external XML-based news exchange format file as specified by the IPTC.