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Thread: Gravity and positrons

  1. #1 Gravity and positrons 
    Forum Ph.D. verzen's Avatar
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    I just had a thought for the science majors here. According to new studies in physics, the universe came from a singularity with a net energy force of 0. When matter is made, it also creates anti-matter. So my question being, could the existence of gravity simply be anti-matter which ends up pulling the matter together?


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  3. #2 Re: Gravity and positrons 
    Reptile Dysfunction drowsy turtle's Avatar
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    Quote Originally Posted by verzen
    I just had a thought for the science majors here. According to new studies in physics, the universe came from a singularity with a net energy force of 0. When matter is made, it also creates anti-matter. So my question being, could the existence of gravity simply be anti-matter which ends up pulling the matter together?
    No; the moon orbits the Earth, but both are composed of matter. Similarly, I am quite certain that both myself and the Earth are composed of matter, and yet we still attract.


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  4. #3  
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    I'm no science major, but i think i can safely say:

    matter and anti-matter do attract each other (but gravity has nothing to do with it), but when they do they annihilate each other when they collide.

    if these new studies you speak of were correct, i would suspect the observable universe would appear very different indeed.

    please feel free to pick as many holes as you like in what i have just said
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  5. #4  
    Reptile Dysfunction drowsy turtle's Avatar
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    Quote Originally Posted by Andy Swainson
    matter and anti-matter do attract each other (but gravity has nothing to do with it)
    Matter and anti-matter may attract each other, if they have opposite electric charge, and they do also attract through the gravitational force. However, like-charge pairs of particles, such as an electron and an anti-proton, will repell each other.

    Quote Originally Posted by Andy Swainson
    but when they do they annihilate each other when they collide.
    Only if we are talking about a particle and its corresponding antiparticle. A proton and a positron, for example, will not annihilate.
    "The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair." ~ Douglas Adams
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