swansont Posted January 23, 2008 Share Posted January 23, 2008 Note: antimatter discussion moved here Link to comment Share on other sites More sharing options...
Norman Albers Posted January 25, 2008 Share Posted January 25, 2008 Can't we say 'vacuum' means the evacuated state of whatever residual mass densities, atoms or plasma ions? This, relevant to whatever we are interested in measuring. Also present here is whatever radiation density. Definitions of temperature involve equilibrium energy distributions. The blackbody radiation density, or temperature ambience, is presumably that of the walls of an experiment regime. Link to comment Share on other sites More sharing options...
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