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- Path: sparky!uunet!think.com!spdcc!das-news.harvard.edu!husc-news.harvard.edu!husc8!mcirvin
- Newsgroups: sci.physics
- Subject: Re: Some physics questions
- Message-ID: <mcirvin.720986177@husc8>
- From: mcirvin@husc8.harvard.edu (Mcirvin)
- Date: 5 Nov 92 17:56:17 GMT
- References: <1992Nov3.122750.1@stsci.edu> <3NOV199212323281@csa2.lbl.gov>
- Distribution: na
- Nntp-Posting-Host: husc8.harvard.edu
- Lines: 25
-
- sichase@csa2.lbl.gov (SCOTT I CHASE) writes:
-
- >In article <1992Nov3.122750.1@stsci.edu>, zellner@stsci.edu writes...
-
- >> > Why is the constant value of speed of light what it is?
- >> > Why not ten times the current value? ie 3*10^9 m/s
- >>
- >>A meaningless question. It's like saying "Why don't you make your meter sticks
- >>only a tenth as long?"
-
- >Not true. It's a very good question, the answer to which is "We haven't the
- >slightest idea - yet." Whether a question seems vacuous often depends on
- >the theoretical framework in which you ask the question.
-
- Or the system of units. Particle people would rephrase the question
- "Why are the coupling constants and masses what they are?" because they
- like to define the speed of light to be 1 and put all the free parameters
- into coupling constants and masses. Now that the speed of light is
- defined to be constant, if a "change in the speed of light" were
- detected it wouldn't be called a change in the speed of light-- more
- likely it would be called a change in the size of all objects in the
- universe, or in the speed of clocks, due to a change in coupling
- constants! At least that's what particle physicists would say.
- --
- Matt McIrvin
-