What makes a formula - to be relativistic??
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From: Y.Porat on 3 Jul 2010 02:23 Wat makes a physics formula- to be relativistic??!! TIA Y.Porat -------------------------------------
From: Helmut Wabnig hwabnig on 3 Jul 2010 08:08 On Fri, 2 Jul 2010 23:23:41 -0700 (PDT), "Y.Porat" <y.y.porat(a)gmail.com> wrote: >Wat makes a physics formula- to be relativistic??!! > >TIA >Y.Porat >------------------------------------- repeated use of lativistic formulas, or using retro-lativistic formulas yield finally re-lativistic formulas hope that helps. w.
From: Inertial on 3 Jul 2010 08:39 "Y.Porat" wrote in message news:ca8139c1-82a4-4e6b-9f4c-7157f9596108(a)b35g2000yqi.googlegroups.com... > >Wat makes a physics formula- to be relativistic??!! You've been told before .. 'relativistic' means to do with the theories of relativity. For formulas, we usually use that adjective specifically for formulas that only appear in relativity (or can be derived from them) [ eg the relativistic formula for total energy (E^2 = (mc^2)^2 + (pc)^2) ] and for formulas that are different under relativity than for classical physics [ eg the relativistic doppler shift formula, as distinct from the classical formula ]. Some relativistic formulas have a 'gamma' in them, some do not. It is not essential for there to be a gamma there. If you were actually interested (you're probably not) .. you could see dictionaries such as the following links: http://dictionary.reference.com/browse/relativistic Physics . a. subject to the special or the general theory of relativity. b. (of a velocity) having a magnitude that is a significant fraction of the speed of light. c. (of a particle) having a relativistic velocity: radiation from relativistic electrons. http://www.thefreedictionary.com/relativistic Physics a. Of, relating to, or resulting from speeds approaching the speed of light: relativistic increase in mass. b. Having to do with or based on the theory of relativity: relativistic mechanics.
From: blackhead on 3 Jul 2010 08:52 On 3 July, 07:23, "Y.Porat" <y.y.po...(a)gmail.com> wrote: > Wat makes a physics formula- to be relativistic??!! > > TIA > Y.Porat > ------------------------------------- It's relativistic if its form doesn't change when viewed from any frame using the transformations of relativity. You might define an equation: Force = mass x acceleration. Where force is defined as that measured in the frame of the particle, mass is a constant that is the same in all frames. But on applying the LT equations to the space and time components of acceleration, you'd find that it was not of the form: Force = mass x acceleration' Hence the equation isn't relativistic. This is just a simple example, bearing in mind that the definition of force here isn't the modern one: f = d/dt( gamma mass)
From: Inertial on 3 Jul 2010 08:58
"blackhead" wrote in message news:3ff03b45-5b68-4aa8-93ce-abb573ac11e2(a)z10g2000yqb.googlegroups.com... >It's relativistic if its form doesn't change when viewed from any >frame using the transformations of relativity. I like that definition. |