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Newsgroups: sci.physics.relativity
Subject: Re: Want to prove E=mc?? University labs should try this!
From: nospam@de-ster.demon.nl (J. J. Lodder)
Reply-To: jjlxa31@xs4all.nl (J. J. Lodder)
Date: Sun, 17 Nov 2024 22:15:57 +0100
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rhertz <hertz778@gmail.com> wrote:

> Current "state of the art" weighting technology (expensive) can measure
> about 1 nanogram of MASS.

So your ignorance of physics extends to experimental technique as well.
FYI, comparing standard kilograms can be done at present to about 10^-9,
so to microgram accuracy.

> I asked ChatGPT this question:

Why, for heavens sake? To dumb to think for yourself?

But one can easily estimate orders of magnitude:
c^2 = 9x10^16 joule/kg, so at 10^-9 accuracy
you need to add 9x10^7 joules to a standard kg
for it's relativistic mass increase to be detectable.
This is about 20 kg of TNT equivalent.

So for the kiddies: don't try this at home,
(and draw your own conclusions)

Jan