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Thread: mass of energized particles

  1. #1 mass of energized particles 
    Forum Sophomore schiz0yd's Avatar
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    does a particle at rest have less mass than when it is moving? I'm wondering if because a particle is energized and moving quickly it will have more mass because of the additional energy, or is it then just represented by the motion?

    also, side question, how/why are 'massless' photons affected by gravity?


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    Special relativity gives that a particle has lowest mass in the system in which it is at rest. So for the first question the answer is yes.

    The second question I am not sure I understood, but I think no is the answer.

    The third question goes into the field of general relativity which I haven't studied that much. However I think it has to do with gravity curving space it self.


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    Forum Sophomore schiz0yd's Avatar
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    i think you're right about the curving of space time, sounds familiar. so gravity wouldn't actually pull on photons because they lack the predicted graviton. if gravitons are real, I think I heard that they act within the higgs field. If all these fields exist for these forces, are particles then standing waves of their intersections?
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    To be honest, I don't think I can provide anything more on that subject. I'll begin my first university level course on particle physics this term and this goes beyond what I have a clue about today. 8)
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  6. #5 Re: mass of energized particles 
    Moderator Moderator Janus's Avatar
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    Quote Originally Posted by schiz0yd

    also, side question, how/why are 'massless' photons affected by gravity?
    Because gravity couples via the energy-stress tensor. Or put another way, gravity interacts with energy also and not just mass, and since photon possess energy, they interact with gravity.
    "Men are apt to mistake the strength of their feelings for the strength of their argument.
    The heated mind resents the chill touch & relentless scrutiny of logic"-W.E. Gladstone


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