Does pure energy have mass

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Re: Does pure energy have mass

Postby Vapymid » Tue Mar 11, 2014 7:36 am

If E=mc^2 holds true then energy is just another type of measurement for mass. Therefore there is no known "pure" energy.

Photons are commonly considered "pure energy" particles but it is a misnomer - photons have no invariant (rest) mass (at least, if they do, it's too small to be measured by existing technology) but they do not exist in a rest state and as soon as something is in motion, as every photon is, it acquires energy and relativistic mass (and therefore interacts gravitationally).

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Re: Does pure energy have mass

Postby Vapymid » Mon May 05, 2014 9:23 am

Lest people think that I went completely off my rockers and to set the record straight, so to say - I actually replied to a post, which was apparently later removed by the moderators :D

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