5 mil where 1 mil = 1/1000 inch) for different purposes, which now include video and digital recording. The tape is coated with an oxide EMULSION, which when exposed to the variations of the magnetic ...

The most commonly used medium for recording sound. It is manufactured in various widths (1/4, 1/2 and one inch primarily) and thicknesses (3.0, 1.5, 1 and .5 mil where 1 mil = 1/1000 inch) for ...

The data are recorded as binary digits (bits) in the form of magnetized spots in one orientation or the other (0 or 1 ... square inch to millions and billions of bits. See magnetic tape formats.