The nature of heat

Discussion in 'Physics & Math' started by Magical Realist, Oct 31, 2015.

  1. Q-reeus Banned Valued Senior Member

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    Magical Realist, Nov 5, 1:24 PM
    What electromagnetic force do photons carry? If a photon flies past an electron, is it attracted to that electron by a force? Does a photon carry a force that is imparted to the electron? How does this "force" exist in a massless particle? Isn't ALL energy equivalent to mass?
     
    Last edited: Nov 8, 2015
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  3. Q-reeus Banned Valued Senior Member

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    Russ_Watters, Nov 6, 4:58PM
    Magical Realist said:
    Objects don't "carry force". Force is an interaction between objects. But no, photons do not interact with electrons in this way: they have to hit the electron.
    "Equivalent" and "is" are two completely different things. Yes, mass and energy are equivalent. But energy is not mass and vice versa.
     
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  5. Q-reeus Banned Valued Senior Member

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    Q-reeus, Nov 6, 5:34PM
    It's not correct that identical frequency/wavelength means indistinguishability. Numerous times this forum, one member has brought up that coherence length of photons with the same E = hf can vary enormously, depending on source. Also, photons can exist in different modes.
     
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  7. Q-reeus Banned Valued Senior Member

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  8. John Connellan Valued Senior Member

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    I posted this. Why is it coming up as Q-reeus having posted it?! Does it appear this way for everyone else?! Weird....
     
  9. Kristoffer Giant Hyrax Valued Senior Member

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    Server issues. Lot of posts got lost and he's trying to restore them.
     
  10. John Connellan Valued Senior Member

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    Well, no...photons do not have charge so they will not be attracted to the electron that way.

    It carries energy which has the ability to produce force

    Photons do not have any mass, only energy.
     
  11. John Connellan Valued Senior Member

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    Aha, I see. I guess I don't even know who I'm replying to anymore (until they sort it out)

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