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Light Sensor

  1. Nov 14, 2007 #1
    Can anyone tell me how does a light sensor work?
     
  2. jcsd
  3. Nov 14, 2007 #2

    mgb_phys

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    What type?

    There are a few different mechanisms depending on how sensitive you need, how fast a response and how much you want to pay.
    Generally the light either generates electricity or changes the electrical characteristics of an element in such a way that you can measure the change with a circuit.
     
    Last edited: Nov 14, 2007
  4. Nov 14, 2007 #3

    Claude Bile

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    Try googling "Photodiode".

    Claude.
     
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