On Sun, 05 Jan 2014 13:50:52 +0100 Ralf Mardorf <[email protected]> wrote: > On Sun, 2014-01-05 at 00:29 +0100, Dominique Michel wrote: > > And classical physics is even worst. In Einstein formula e=mc^2, the > > only term for which we have a definition is c... > > > > For e, it is no definition, only equations which are not definitions > > https://upload.wikimedia.org/wikipedia/commons/thumb/c/c9/E%3Dmc%C2% > B2-explication.svg/220px-E%3Dmc%C2%B2-explication.svg.png > > The Definition for E is m*c². By your explanation we would als have no > definition for c, since c also is an equation, c is m/s (another m ;). > The only differences are that some values are constants and others are > variables.
Please, no. c is a constant with the unit(!) m/s. m and s are no variables... And the m in [c] = m/s is not the same as the m in E = m*c². - Arnold
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