††††The video recorder works in the same way as a tape recorder used for sound recording. The picture information is stored as a line of varying magnetism, or track, on a plastic tape covered with magnetic material. To overcome the huge amount of information needed to record a picture, the video track is arranged in a zig-zag that takes up most of the width of the tape. The sound is recorded on a narrow track of the tape. The same tiny heads on the machine are used for recording and playback.
