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Card 16
Front
17. What happens if the angle of incidence is equal to the critical angle.
Back
Card 17
Front
18. What are optical fibres used for?
Back
Card 18
Front
19. How does wireless technology work?
Back
Card 19
Front
20. What are the three main advantages of wireness technology?
Back
Card 20
Front
20. What code was used at the beginning of the last century?
Back
Card 21
Front
21. What does morse code use?
Back
Card 22
Front
22. Why does modern technology use visiable light as it's signal?
Back
Card 23
Front
23. What is light used for communication produced by?
Back
Card 24
Front
24. What are optical fibres used to carry?
Back
Card 25
Front
25. What are the advantages and disadvantages of light?
Back
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