Communicating with light

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Morse code is what type of signal? Why is this?
A digital signal, because the light pulse is only either "on" or "off"
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What do optical fibres carry data as?
Pulses of light or infrared radiation
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How do optical fibre cables work?
They work on total internal reflection
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What are their main uses?
Telephone and broadband internet cables
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How can they be used in medicine?
You can "see" inside the body without needing to operate
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What are the advantages of using light to communicate?
It is quick, there is little interference and many signals can be sent down an optical fibre cable at once, so fewer cables are needed
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Other cards in this set

Card 2

Front

What do optical fibres carry data as?

Back

Pulses of light or infrared radiation

Card 3

Front

How do optical fibre cables work?

Back

Preview of the front of card 3

Card 4

Front

What are their main uses?

Back

Preview of the front of card 4

Card 5

Front

How can they be used in medicine?

Back

Preview of the front of card 5
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