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Thread: Speed of light

  1. #1 Speed of light 
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    What makes photons go at light speed and do they ever stop or slow down?


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  3. #2  
    Brassica oleracea Strange's Avatar
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    They have no mass. Any particle with zero mass must travel at the speed of light. And no, they never speed up or slow down.


    ei incumbit probatio qui dicit, non qui negat
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