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Light

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by

Paul Sheffield

on 31 October 2016

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Transcript of Light

Light
L.O
Total internal reflection
Critical angle

Starter
What is the refractive index?
How can you calculate it?
How did Mr Sheffield get it wrong last lesson?
Does it now work?
Finding the critical angle
Text books
Pages:
Uses of total internal reflection
Total internal reflection and critical angle:

HT only

Refractive index =
1
sin c

Visible light can be sent along optical fibres.


The laser as an energy source for cutting, cauterising and burning.
Full transcript