Refractive index and total internal reflection

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  • Created by: chloefaun
  • Created on: 17-04-14 16:18
What is refraction?
It is when waves change direction as they enter a different medium
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Why does the light change direction?
Because when the density of the mediums used change, the waves slow down as a result of the denser material
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Why do optical fibres work?
As a result of total internal reflection
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Total internal reflection can only happen when?
When a wave travels through a dense substance towards a less dense substance
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Finish the sentence :A dense material with a high refractive index...
...has a low critical angle
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The value of the critical angle depends on...
...the refractive index
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Other cards in this set

Card 2

Front

Why does the light change direction?

Back

Because when the density of the mediums used change, the waves slow down as a result of the denser material

Card 3

Front

Why do optical fibres work?

Back

Preview of the front of card 3

Card 4

Front

Total internal reflection can only happen when?

Back

Preview of the front of card 4

Card 5

Front

Finish the sentence :A dense material with a high refractive index...

Back

Preview of the front of card 5
View more cards

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