The digital data making up an image is stored in a file. The raw digital information for an image takes up a considerable amount of space. For example a 10 by 8 inch colour print scanned at 600 dpi (dots per inch) will result in about 85.5 Mb (Megabytes) of raw data.
Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds.
Covalent bonding. There are different types of bonding, including: Ionic bonding between metals and non-metals; Covalent bonding between non-metals; A covalent bond is a shared pair of electrons, shared between two non-metal atoms. Simple molecules. Simple molecules consist of a small number of atoms joined by covalent bonds. For example, water and carbon dioxide exist as simple molecules. Their molecules are often shown using the models in the table below.