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Radiation from antennae - a new philosophy
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October 10th 14, 01:28 AM posted to rec.radio.amateur.antenna
rickman
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First recorded activity by RadioBanter: Nov 2012
Posts: 989
Radiation from antennae - a new philosophy
On 10/9/2014 7:46 PM,
wrote:
rickman wrote:
On 10/9/2014 5:14 PM, Jerry Stuckle wrote:
On 10/9/2014 1:04 PM, rickman wrote:
The only mass a photon has is that which is equivalent to its energy, E
= mc^2.
I understand it has no rest math. But where does the mass come from?
There has to be mass to exert pressure. Does the mass just appear from
nowhere? I doubt it...
When a proton is accelerated and the mass quadruples, where does that
extra mass come from?
Photons are not accelerated; they either exist and are travelling at the
speed of light (in the medium) or they don't exist.
And before you ask, the speed change in the local frame due to a change
in medium is instantaneous, which would be impossible if they had rest
mass.
No one has said a photon has rest mass. In fact it is impossible for it
to have rest mass since it can never be at rest...
--
Rick
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