• Created by: itsjannah
  • Created on: 17-05-15 12:57
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  • The Morse code
  • It uses a serious of dots and dashes to represent letters
  • This can be done by lamps and flashes of lights
    • Sending signals
  • DIS AND ADV: can the signal be seen
    • Cab wires be cut
      • How far can it travel
        • Laser light
          • White light is made out of different colours
            • Laser light shows phases shows low divergance


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