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.
A covalent bond is a type of chemical bonding which is formed as a result of sharing electron pairs between non-metal atoms. This electron sharing is occurred due to low electronegativity difference between the two atoms involved in bonding. In covalent bonding, non-metal atoms are typically involved.