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CONTENTS 2

Introduction 2

What is Television？ 4

Principles of the Television Camera 6

Turning the Picture into Electricity 8

The Electron Gun 10

What is Sound？ 12

More about Sound Waves 14

How a Microphone Works 16

Electro-Magnetic Waves 18

The Electro-Magnetic Carrier Wave 20

Transmitting the Programme 22

Receiving the Sound 24

Receiving the Picture 26

How the Cathode-Ray Tube Works 28

A Picture that is not really there 30

Wavelengths and Frequencies 32

Television Networks and Transmitting Aerials 34

The Television Studio 36

Controlling the Show 38

Outside Broadcasts 40

Mobile Transmissions 42

Televising Films and Tape Recordings 44

Some Special Effects 46

The Introduction of Colour Television 48

Vocabulary 50

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