Article View: sci.physics
Article #3347Re: Understand...!!!!
From: Dave Griffiths
Date: Sat, 26 Sep 1992 20:43
Date: Sat, 26 Sep 1992 20:43
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1529 bytes
In article <25SEP199209055315@utahep.uta.edu> sawyer@utahep.uta.edu (Lee Sawyer) writes: >In article <92Sep24.232130.15043@acs.ucalgary.ca>, shteinbo@acs.ucalgary.ca (Boris Shteinbock) writes... >> >>Strange thing. We talk about physics using all this different words >>and phrases like mass, energy, time, particle, wave ,field, etc. >>but this words don't make any sense if you'll look more carefully >> >> >>What is Energy ? >> >>What is time ? >> >>What is field ? >> >>What is ... ? >> > > Posts like this really piss me off. Take a couple of physics >courses, then ask "What is energy ?" > That's better than studying the subject for a few years and believing you now _know_ what these words mean. I hate to go metaphysical on you, but aside from the mathematical definition of time as a variable in your calculations, what _is_ time? Given that most physics is time reversible, how do you know that you're going forward in time? Do you believe that fields really _exist_, or are they just a mathematical device? If the former, how do you imagine something that is infinite? Just curious. Dave Griffiths
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Newsgroups: sci.physics Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!Germany.EU.net!prim!dave From: prim!dave@germany.eu.net (Dave Griffiths) Subject: Re: Understand...!!!! Message-ID: <1992Sep26.204345.1200@prim> Organization: Primitive Software Ltd. References: <92Sep24.232130.15043@acs.ucalgary.ca> <25SEP199209055315@utahep.uta.edu> Date: Sat, 26 Sep 1992 20:43:45 GMT Lines: 33