Recent content by ImagineLab

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    Determining the mass of a photon travelling at the speed of light

    First, photon has no mass. Second, answer from those equations are only differ by 1/2. (Can you see that?)
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    Why does gravity cancel out for all points inside a sphere?

    yes, all you need is an intergral
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    Continuous eigenvalue of n by n matrix

    Hello, all, This is my fisrt time post on this forum, I have this question for long time but people around me couldn't really answer it, hopes I can get the answer from you guys... Given a complex n by n matrix A, Under what restriction, its eigenvalue(s) is the continuous function of A?
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