On 29 =EE=CF=C5=CD, 00:58, DRLunsford <antimatte...@xxxxxxxxx> wrote:
On Oct 17, 12:41 pm, kvblake <kvblake2...@xxxxxxxxx> wrote:
From QM follows that the position of a photon can not be determined
better than L (de Broglie wavelength).
From relativity, it follows that the photon has no position at all,
because there is no rest frame to which it might be referred.
The photon is all momentum. It is not a ball, it does not get
"exchanged" like spies passing pregnant newspapers around. It is,
simply, a quantum of the electromagnetic field, and nothing more.
Who is teaching our students relativity these days?
-drl
Do you mean that when a photon is created there emerges a EM field at
once in the whole universe or the existing EM field changes at a
constant value immidiately everywhere?
I read about localized photons in Mandel's quantum optics.
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