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Card 16

Front

17. What happens if the angle of incidence is equal to the critical angle.

Back

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Card 17

Front

18. What are optical fibres used for?

Back

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Card 18

Front

19. How does wireless technology work?

Back

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Card 19

Front

20. What are the three main advantages of wireness technology?

Back

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Card 20

Front

20. What code was used at the beginning of the last century?

Back

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Card 21

Front

21. What does morse code use?

Back

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Card 22

Front

22. Why does modern technology use visiable light as it's signal?

Back

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Card 23

Front

23. What is light used for communication produced by?

Back

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Card 24

Front

24. What are optical fibres used to carry?

Back

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Card 25

Front

25. What are the advantages and disadvantages of light?

Back

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