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- Newsgroups: sci.physics
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!jvnc.net!nuscc!matmcinn
- From: matmcinn@nuscc.nus.sg (Brett McInnes)
- Subject: Re: down with inertial frames
- Message-ID: <1992Nov24.042813.24743@nuscc.nus.sg>
- Organization: National University of Singapore
- X-Newsreader: Tin 1.1 PL4
- References: <1992Nov17.013932.18405@galileo.physics.arizona.edu>
- Distribution: na
- Date: Tue, 24 Nov 1992 04:28:13 GMT
- Lines: 18
-
- lnh@soliton.physics.arizona.edu (sometimes a Wombat) writes:
- : matmcinn@nuscc.nus.sg (Brett McInnes) writes:
- : >
- : > It is easy to imagine how one could teach a course in SR without ever
- : > mentioning inertial frames.
- :
- : ???
- :
- : Larry "What???" Hammer
-
- I assume you don't agree? Would you think it controversial to assert
- that Euclidean geometry can be taught without Cartesian coordinates?
-
- What I have in mind is this. In SR one can formulate Newton's first law
- by saying that the worldlines of free particles are straight lines in
- spacetime. [Note: no mention of inertial frames.] It would be pleasant
- to have such a nice formulation in Newtonian mechanics. But what is the
- definition of "straight line " in Newtonian spacetime?
-