Article View: sci.physics
Article #4125Re: Spin
From: John C. Baez
Date: Tue, 29 Sep 1992 19:46
Date: Tue, 29 Sep 1992 19:46
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In article <1992Sep29.115605.10858@sei.cmu.edu> firth@sei.cmu.edu (Robert Firth) writes: >And I'm still waiting for somebody to cite the passage in the Principia >where Newton says gravity travels with infinite speed. In my copy it's on page 177: Gravity travelling with infinite speed, it follows that I will abandon my attempts to construct a theory of mechanics in which all disturbances propagate within the cone traced out the path of light emanating from the source of the disturbance. This set back the discovery of special relativity for centuries. :-( Seriously, there are some fascinating physical speculations in the Principia that seem far ahead of their time. Unfortunately I can't remember them - I believe there are a bunch collected into one section somewhere. If anyone would post some I'd be very happy. Does Newton actually say anything concerning the speed of light? I believe he may have made some speculations in the section I read....
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Newsgroups: sci.physics Path: arc1-ca.pugleaf.net!sparky!uunet!snorkelwacker.mit.edu!galois!riesz!jbaez From: jbaez@riesz.mit.edu (John C. Baez) Subject: Re: Spin Message-ID: <1992Sep29.194651.27429@galois.mit.edu> Sender: news@galois.mit.edu Nntp-Posting-Host: riesz Organization: MIT Department of Mathematics, Cambridge, MA References: <1992Sep29.003556.3472@sjsumcs.sjsu.edu> <1992Sep29.042451.16817@murdoch.acc.Virginia.EDU> <1992Sep29.115605.10858@sei.cmu.edu> Date: Tue, 29 Sep 92 19:46:51 GMT Lines: 21