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    lilian3fena's Avatar
    lilian3fena Posts: 1, Reputation: 1
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    #1

    Jul 11, 2010, 09:58 PM
    What is the speed of light?
    ...
    Clough's Avatar
    Clough Posts: 26,677, Reputation: 1649
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    #2

    Jul 11, 2010, 10:03 PM
    Hi, lilian3fena!

    Please click on the following link.

    LINK

    Thanks!
    martinizing2's Avatar
    martinizing2 Posts: 1,868, Reputation: 819
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    #3

    Jul 11, 2010, 10:03 PM

    186,000 mps
    Clough's Avatar
    Clough Posts: 26,677, Reputation: 1649
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    #4

    Jul 11, 2010, 10:23 PM
    Now, see? That's what we get for posting within the same minute, martinizing2! LOL! :)
    tanishgoel's Avatar
    tanishgoel Posts: 1, Reputation: 1
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    #5

    Sep 30, 2010, 01:18 AM
    The speed of light is 300000km/s in vacuum or air. But in different medium it is reduced .the amount of reduction is calculated by dividing the speed of light by refractive index of the material.so, speed of light is maximum in vacuum because it has refractive index of "one"
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