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- Path: sparky!uunet!mcsun!uknet!bcc.ac.uk!link-1.ts.bcc.ac.uk!ucap22w
- From: ucap22w@ucl.ac.uk (Martin S T Watts)
- Newsgroups: sci.physics
- Subject: Re: TIME HAS INERTIA
- Message-ID: <1992Nov12.201646.31516@bas-a.bcc.ac.uk>
- Date: 12 Nov 92 20:16:46 GMT
- References: <1992Nov09.192052.25358@bas-a.bcc.ac.uk> <9NOV199213395569@csa1.lbl.gov>
- Organization: Bloomsbury Computing Consortium
- Lines: 51
-
-
- sichase@csa1.lbl.gov (SCOTT I CHASE) writes:
-
- >In article <1992Nov09.192052.25358@bas-a.bcc.ac.uk>, ucap22w@ucl.ac.uk (Martin S T Watts) writes...
-
- >>balanced - why can't you? For another thing, they are not. The one thing that
- >>you give Einstein credit for is something he probably never said. As Hermann
- >>Bondi has pointed out [Physics Bulletin _38_ (1987) p62], in all known physical
- >>processes energy and mass are in fact conserved separately. Energy has mass
- >>is a more useful statement than energy and mass are equivalent.
-
- >Maybe so, in all physical processes known to Hermann Bondi! But any
- >student who has spent two days in a particle physics class knows better.
-
- Any student who's spent two days in a particle physics class knows better than
- Hermann Bondi? Now there's a sweeping statement. :-)
-
- (And if you think that, say, positron-electron annihilation is an example of
- the destruction of mass, then think again.)
-
- >And how clever of you to reference a magazine so obscure that even *I*
- >couldn't find it, with all the resources of the University of California
- >Library system at my disposal. I am told by our local LBL physics librarian
- >that Physics Bulletin was a cross between the APS bulletin with it's
- >abstracts, and a small-scale Physics Today, with newsy items, appointments,
- >obits, that sort of thing. It has been replaced by Physics World. The
- >U.C. Library, which saves office memos and old toilet paper, never bothered
- >to keep its copies of Physics Bulletin.
-
- It wouldn't surprise me if American Universities were turfing out copies of
- J. Phys. A! I only included the reference in case people doubted the
- authenticity of my claim - I hadn't thought people would go to the trouble
- of looking it up. I dug out the original article, though, and found the
- following recommended reading, in case you're interested:
-
- Warren, JW 1976 "The mystery of mass-energy" Phys. Educ. _11_ p52-54 and
- letter _11_ p453-4
-
- Bondi, H 1965 Relativity and Common Sense (London: Heinemann) pp72-108, 155-9
-
- Rogers, EM 1960 Physics for the Enquiring Mind (Princeton: Princeton University
- Press and London: Oxford University Press) pp403-6
-
- >So I guess that the wisdom of Hermann Bondi is just lost to me...
-
- Well, I hope not. You'd do well to look out this article if you sincerely think
- that energy and mass are interconvertible - it's a very common misconception.
- The article's published by the Institute of Physics, so it shouldn't be
- impossible to get hold of.
-
- Martin Watts.
-