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- From: rl@socrates.ucsf.edu (Robert Langridge)
- Newsgroups: sci.math
- Subject: Re: The Value of Science
- Message-ID: <rl.711841583@cgl.ucsf.edu>
- Date: 22 Jul 92 21:46:23 GMT
- References: <1992Jul20.223032.6568@sequent.com>
- Sender: news@cgl.ucsf.edu (USENET News System)
- Organization: UCSF Computer Graphics Lab
- Lines: 54
-
- sylviab@sequent.com (Sylvia Berkowitz) writes:
-
- >I'm reading an English translation of "The Value of Science"
- >by Henri Poincare. The copy I have was published by Dover
- >Publications in 1958. It, however, doesn't give a date for
- >the original (presumably French) publication.
-
- >Two of the chapters in the book are, "The Measure of Time" and
- >"The Notion of Space". My curiosity concerning the original
- >publication date for the book steams from a desire to know
- >which came first, these writings or relativity. (It's kind
- >of amusing actually; I'm trying to establish cause and effect
- >on writings concerning simultaneity.) :-)
-
- I recommend "History of the Theories of Aether and Electricity" Vol 2
- "The Modern Theories 1900-1926" by E W Whittaker (Thomas Nelson 1953)
- particularly Chapter II, "The Relativity Theory of Poincare and Lorentz".
-
- On page 30 we find:
-
- "Even before the end of the nineteeth century, the failure of so many
- promising attempts to measure the velocity of the earth relative to
- the aether had suggested to the penetrating and original mind of
- Poincare a new possibility. In his lectures at the Sorbonne in 1899,
- after describing the experiments so far made [he said]...
- 'I regard it as very probable that optical phenomena depend only on the
- RELATIVE motions of the material bodies, luminous sources, and optical
- apparatus concerned...' In other words, Poincare believed in 1899 that
- ABSOLUTE MOTION IS INDETECTIBLE IN PRINCIPLE..."
-
- Later:
-
- "In a lecture ... on 24 Sep 1904, Poincare gave to a generalized form
- of this principle the name, THE PRINCIPLE OF RELATIVITY ...[he declared]...
- 'From all these results there must arise an entirely new kind of dynamics,
- WHICH WILL BE CHARACTERISED ABOVE ALL BY THE RULE, THAT NO VELOCITY CAN
- EXCEED THE VELOCITY OF LIGHT"
-
- On page 40:
-
- "[in 1905]...Einstein published a paper which set forth the relativity
- theory of Poincare and Lorentz with some amplifications, and which attracted
- much attention"
-
- [Whittaker gives the original references. I have retained his spelling
- and put in upper case the italicised text in the original]
-
- Whittaker's two volumes are fascinating reading.
-
- Bob Langridge Phone: +1 415 476-2630, -1540, -5128
- Computer Graphics Laboratory FAX: +1 415 476-0688
- 926 Medical Sciences
- University of California E-Mail: rl@cgl.ucsf.edu
- San Francisco CA 94143-0446
-