principles of television
equipment
signal)
extends some senses
home of the viewer
source of production
sense of hearing
sense of vision
physical distanse
distinguish; brightness,colours, details,sizes,shapes and positions of objects
pitch, loudness, and distribution of sounds
optic nerve
connect atransmitter with areceiver
waves sent over the single channel
in two dementions
pictures
motion of the scene appears continuously
200000 or more picture elements per second
from 25 to 30 pictures per second
brain retains the impression for about one tenth of a second