Re: Photons

On 5 ago, 00:05, joill...@xxxxxxxxxxx wrote:
On Aug 5, 12:26 am, "Pmb" <some...@xxxxxxxxxxxxx> wrote:

<joill...@xxxxxxxxxxx> wrote in message

news:1186287636.967155.262920@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Can someone please answer this question: A photon has an electric
field and a magnetic field that oscillate at right angles to each
other. But SR says that in any system moving at the speed of light all
clocks are stopped. So how can a photon (moving at the speed of light)
have oscillating fields?

The measurement is taken in a frame moving less than c. Since no clocks can
move at c then the question can yied no answer.

Pete

Thanks for the reply. But what do you mean by a clock? In physics,
isn't anything that repeats itself at intervals (such as a photon's
electric field) considered a clock?

You are in a typical limit case. As ether doesn't exist, a single
entity must be at rest (doesn't exist any other thing to move with
respect to it). But a photon at rest has total energy e=0, then its
frequency f must be zero, because e=hf (h original Plank constant).
And a light clock with zero frequency...is stopped. But all of this
must be in the limit, because a zero energy entity...does't exist at
all. Problem resolved! An almost traveling with c speed entity see
from an almost no existing inertial frame and having almost 0
frequency (and almos 0 energy) as see by itself. The entity must
travel at almost c speed, because it is moving in the almost zero
field created by another almost not existing entity.

RVHG (Rafael Valls Hidalgo-Gato)

.

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