Incandescent lamp with tungsten filament and filled with a mixture of halogen gas and vaporized quartz. The gas glows brightly and helps prevent the filament from combining with oxygen so as not to burn up at high temperatures. Chapter 6.
Extra footage on either side of a clip for use in creating fades and other types of transitions. Chapter 11.
Bright illumination emanating from a point source, such as a single, bare lamp; causes sharp shadows. Chapter 6.
The mechanism on top of a tripod or dolly that holds the camera and allows you to move it. Chapter 4. Recording / playback element in video cameras and tape recorders, e.g., record head, playback head.