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Re: Engineering Newsletter

To: All

>What you call "relativistic energy" or "relativistic mass" I call
>energy.  I reserve the term mass for invariant mass.  I believe
>this avoids confusion.

OK, in the future I'll try to use energy instead of relativistic mass. But
now we are using energy, we should not forget that energy excerts
gravity/inertia too!
So if one thinks to be smart by storing the energy in the form of photons in
a perfectly mirrored globe, so that no extra inertia is added, then one is