the practice

the practice, science, or medium of transmitting moving images by radio waves, cable wires, or satellite to receivers consisting of a display monitor, tuner, and electronic circuitry: images may be produced by means of a camera tube, such as an image orthicon or vidicon, or a CCD device that converts light rays into electrical signals that are sent to a receiver for reproduction of the image, as by reconverting the signals into electron beams that are projected against the fluorescent screen of the kinescope, or picture tube, or by the use of LCD or plasma, flat-panel displays in the circuit