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Television: Glossary

A

AM
amplitude modulation - method of using radio waves byadjusting the amplitude or size of a wave
antenna
(plural - antennas) equipment for receiving radio waves

B

broadcasting company
a business that sends out signals using radio waves to entertain and provide information

C

cathode ray tube
(CRT) equipment that focuses a beam of light onto a phosphor screen
Channel
frequency on which a television station airs programming
commercial
having to do with business - also an advertisement

D

Data
facts and information
dialogue
speaking and talking
direct line
without interruption or interference - a straight distance between objects

E

electromagnetic spectrum
the range of all light and sound waves
Electron
a negatively charged particle of electricity

F

fluid
smooth, without breaks
FM
frequency modulation - method of using radio waves by adjusting the frequency or number of waves per measurement of time
Foley artist
an artist that creates sound effects for motion

G

geosynchronous orbit
an orbit that keeps up with the turning of the earth so that it stays directly over the same location

I

Industry
business activity
Intensity
strength

L

Luxury
generally not a necessity

M

magnetic field
a field around a magnet and its influence
mechanical vibrations
continuous shaking with predictable frequency
migration
seasonal movement of animals
Mobile
capable of being moved

N

Neon
a gas that glows when exposed to electrons
networks
a complex facility for broadcasting television

O

optical illusion
an image that deceives reality

P

phosphor
any substance that, when exposed to electricity or other form of radiation, gives off a visible light
Pixels
the smallest part of an image
plasma television
a flat screen that works using a plasma gas such as xenon or neon
Potential
capable of becoming
Primitive
simple - early in the development phase
production
creation
programming
the selection of television shows

R

raster scan
the horizontal and vertical pattern made by a CRT gun which scans across and from top to bottom of a screen and then back again
refreshes
to make new or make over again
remote control
a handheld device that can control actions of another device

S

Satellite
man-made equipment that orbits a planet to perform a function
Signals
commands
Simulate
make it look like
sound effects
sounds created for motion pictures

T

television
a device which allows a person to see broadcast signals
transmitted
sent out
transmitter
a device which sends out signals

V

Vacuum
space void of matter, especially air
video conferencing
the ability to have a meeting with people at multiple locations using a screen for viewing
videotape
a magnetic tape that allows copies of visual activities or the act of creating these copies - filming

W

wavelength
the distance from the crest of one wave to the crest of the next wave

X

Xenon
a gas that glows when exposed to electrons
PBS
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