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14.7 Worksheet on total internal reflection 2- Notes and answers (1)

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Applications of TOTAL INTERNAL RELFECTION
1. Optical Fibre: What are optical fibres?
What is in a cable of optical fibre?
Optical fibres are bundled in thick cables for use in communications. Sometimes they run along the sea-beds to
link continents.
Applications of total internal reflection
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How is a message sent along optical fibre?
Step 1
Step 2
Step 3
Step 4
Step 5
Step 1: A computer creates a message.
Step 2: The transmitter encodes the message into a digital signal and sends it as a pulse of light or infrared.
Step 3: The message travels along the optical fibre by total internal reflection and a repeater is used to stop the
signal becoming weak (attenuation).
Step 4: The message reaches the receiver which is an optical decoder and is decoded.
Step 5: The decoded message is send to the destination computer.
Applications of total internal reflection
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Applications of total internal reflection
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(5) Total Internal reflection in a prism
Applications of total internal reflection
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Applications of total internal reflection
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Applications of total internal reflection
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