Beath High School - Int 1 Physics 1

Intermediate 1 Physics

Telecommunication Glossary aerial to

earpiece fax to hertz

loudspeaker to oscilloscope picture tube to receiver

reflection to telephone

transmitter to wavelength

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aerial

aerial to earpiece

amplifier

amplitude

decoder

earpiece

part of a radio or TV which takes in all

radio wavespart of a radio or TV which increasesthe strength of a signal

the height of a wave

part of a radio or TV which takes thesignal off the carrier radio waves

part of a telephone in which is aspeaker which changes an electricalsignal to sound

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fax

fax to hertz

FM

frequency

Geostationary

satellite

hertz

a machine which sends a signal along

telephone wires and makes a copy of a

document at a distancefrequency modulation – a way ofsending high quality radio messages

the number of waves each second

a satellite which orbits once every 24

hours and stays above the same point

on the equatorthe units for frequency

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loudspeaker

loudspeaker to oscilloscope

mobile

phonemouthpiece

optical fibre

oscilloscope

this device changes electrical energy to

sound in the earpiece of a telephonea phone which is both a transmitter

andreceiver and uses radio waves tocommunicate with a base stationthis is the part of a telephone whichcontains a microphone

a long, thin piece of glass throughwhich a beam of light can travel

an instrument which displayspictures of electrical signals

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picture tube

picture tube to receiver

pitch

power

supplyradio waves

receiver

this device changes electrical energy to

light in a televisionhow high or low a sound is, e.g. awhistling kettle produces a high

pitchednotethis is the part of a radio or

televisionwhich supplies the amplifier with

extraenergyinvisible rays of energy which can beused to carry signals

the part of a communications system

which takes in and replays the signal

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reflection

reflection to telephone

reflector

telecommunication

telegraph

telephone

light “bouncing” off a shiny surface

a shiny surface which light bounces off

easily

passing a message over a distance

the use of wires to send a message,e.g. using morse code

sending a sound message using wires,

optical fibres or radio waves

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transmitter

transmitter to wavelength

tuner

wavelength

the part of a communications system

which sends out the signalthe part of a radio or television

whichselects the station you wishthe distance from the crest of onewave to the crest of the next wave

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Intermediate 1 Physics Telecommunication

End of Glossary