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Thread: Behaviour of particles around fast moving objects

  1. #1 Behaviour of particles around fast moving objects 
    Forum Freshman
    Join Date
    Jun 2009
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    Belgium
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    Hi

    Say an object moves at a very high speed, close to the speed of light.
    Since the atoms (electrons, protons, neutrons, .. ) around the object are moving much slower,
    they cant close in immedatly behind the fast moving object.

    So is there an absolute vaccuum created behind the object?
    I dont mean the absence of air behind a plane or something.
    I mean the total absence of electrons, protons, .. and thus atoms (except maybe for photons which are emitted by the object itself as EM-radiation)
    A more perfect vacuum then vacuum in outer space, which is filled with some atoms.


    (the red arrows are supposed to be EM-radiation)
    (sorry for my crappy MS Paint skills)


    I know an object with a mass big enough to create a decent easily observable vacuum cant reach that kind of speeds. But wouldnt even a much slower object create a very small vacuum behind it (maybe only a few nanometers)?

    My main question is actually, how do particles move around a moving object?
    If i see my hand moving for example, i imagine there is a tiny space behind it where particles have not yet managed to fill the gap.

    I'm still learning so i know theres a chance im totally wrong here

    Thanks

    Simon

    PS: I have had no real physics education so excuse me if im using the wrong terms in some places.


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