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- Newsgroups: sci.math
- Path: sparky!uunet!gatech!news.ans.net!cmcl2!panix!davidc
- From: davidc@panix.com (David C. Chorlian)
- Subject: Re:The Value of Science
- Summary: Whittaker account of Relativity Inaccurate
- Message-ID: <1992Jul25.014957.18824@panix.com>
- Date: Sat, 25 Jul 1992 01:49:57 GMT
- Organization: PANIX Public Access Unix, NYC
- Keywords: Relativity, Poincare, Whittaker
- Lines: 39
-
-
- Abraham Pais, in his biography of Einstein, "Subtle is the
- Lord...", has quite a different account of Poincare's contribution
- to the development of the theory of Relativity, and says,
- "His [Whittaker's] treatment of special theory of relativity ..
- shows how well the author's lack of physical insight matches his
- ignorance of the literature." (168)
- Of Poincare's 1904 address in St. Louis, Pais gives the
- following account on page 128:
- "All phenomena seen by one observer [in relative motion to
- another] are retarded relative to the other, but they all are
- retarded equally (Poincare points out) and 'as demanded by the
- relativity principle [the observer] cannot know whether he is at
- rest or in absolute mothion.' Poincare is getting close. But then
- he falters: 'Unfortunately this reasoning is not sufficient and
- complementary hypotheses are necessary; one must assume that bodies
- in motion suffer a uniform contraction in their direction of motion.'
- The refference to complementary hypotheses makes clear that
- relativity theory had not yet been discovered."
-
- According to Pais, Poincare gave a series of lectures at
- Goettingen in 1909:
- "The new mechanics, Poincare said is based on three hypotheses.
- The first of these is that bodies cannot attain velocities larger
- than the velocity of light. The second is that the laws of physics
- shall be the same in all inertial frames. Then Poincare introduces
- a third hypothesis: ' ... a body in translational moting suffers
- a deformation in the direction in which it is displaced.' It is
- evident that as late as 1909 Poincare did not know that the
- contraction of rod is is a consequence of the two Einstein
- postulates. Poincare therfore did not understand one of the most
- basic traits of the special relativity. (167-68)
-
- Although Poincare had the equations of the Lorentz transformation
- by 1905, HE DID NOT UNDERSTAND WHAT THEY MEANT. Thus he is rightly
- not credited with the development of special relativity.
-
- David B. Chorlian
- Neurodynamics Lab SUNY/HSCB
-