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- Path: sparky!uunet!think.com!ames!agate!doc.ic.ac.uk!sot-ecs!dbc
- From: dbc@ecs.soton.ac.uk (Bryan Carpenter)
- Newsgroups: sci.physics
- Subject: Re: Size of a PHOTON?
- Message-ID: <13441@ecs.soton.ac.uk>
- Date: 9 Nov 92 17:52:58 GMT
- References: <9211021802.AA29403@anubis.network.com> <1992Nov3.175155.27867@impmh.uucp> <13379@ecs.soton.ac.uk> <4NOV199211055734@csa1.lbl.gov>
- Sender: news@ecs.soton.ac.uk
- Lines: 37
- Nntp-Posting-Host: louis
-
- In <4NOV199211055734@csa1.lbl.gov> sichase@csa1.lbl.gov (SCOTT I CHASE) writes:
-
- >In article <13379@ecs.soton.ac.uk>, dbc@ecs.soton.ac.uk (Bryan Carpenter) writes...
- >>In <1992Nov3.175155.27867@impmh.uucp> dsg@impmh.uucp (Dave Gordon) writes:
- >>>...
- >>
- >>>This relates to something I have been wondering about for a while now:
- >>>is there an upper bound on the freqency of electromagnetic radiation?
- >>
- >>You can increase the energy of a photon indefinitely just
- >>by boosting it into a fast enough reference frame. So the answer
- >>is: no, there is no upper limit on the energy.
-
- >As I tried to make clear yesterday, this presupposes that the physics of
- >high energy QED is the same as at low energy, a fact against which there
- >is at least some indirect suggestion (I hesitate to use the word "evidence",
- >though some would call it that).
-
- >...
-
- >Clearly, you get into a nasty tangle trying to imagine such a modification,
- >and the implications that it would have for special relativity. But this
- >does not imply, as Bryan infers, that it could not happen. It just means
- >that we don't understand the behavior of photons at energies higher than
- >we have ever studied them.
-
- Well ok. I certainly don't want to get into any argument about what
- might happen near the Plank scale.
- I thought Dave was making arguments based on standard special-
- relativistic effects like Lorentz-contraction and mass increase
- possibly leading to a gravitational collapse. I just meant to point out
- that that logic wasn't right, assuming Lorentz invariance.
-
- >-Scott
-
- Bryan
-
-