Re: EP and Unruh - effect (Layman)





ebunn@xxxxxxxxxxxxxxxxxxxxxx wrote:

Part of the problem is that you have to be very careful to specify
what you mean by "equivalence principle" and what you mean by
"radiate."  The equivalence principle is local -- it applies only in
an infinitesimal neighborhood.  On the other hand, to tell whether
something is radiating or not, you typically look at the
electromagnetic fields in the far field (radiation) region.

I can place a photographic plate right next to the charge and see whether it is blackened. There is no need to go to infinity in order to detect radiation.

Eugene.


.



Relevant Pages

  • Re: EP and acceleration
    ... >> elevator, I cannot distinguish between being on a surface ... >> A uniformly accelerating body in an empty space faces ... >> radiation from the opposite direction of the acceleration. ... > The Equivalence Principle. ...
    (sci.physics)
  • Re: Radiations equivalence principle
    ... gravitational field, whereas a charge in free-fall in a non-zero ... and "equivalence principle". ... You can think of reasonable radiation ...
    (sci.physics.research)
  • Re: EP and acceleration
    ... >>> A uniformly accelerating body in an empty space faces ... >>> radiation from the opposite direction of the acceleration. ... >> The Equivalence Principle. ... To spew even a bit more it would nice if a near black hole, ...
    (sci.physics)
  • Re: Freely Falling Charge: Radiates ?
    ... Under these condition, the charge will emit EM radiation, ... According to the Equivalence Principle of GTR, ... applied force, F_0, is gravitational, then the co-moving ...
    (sci.physics)
  • Re: EP and Unruh - effect (Layman)
    ... You agree that accelerated electron ... You agree that an electron in a gravitational field does ... "Radiation from a Uniformly Accelerated Charge and the Equivalence ... what you mean by "equivalence principle" and what you mean by ...
    (sci.physics.research)