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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!feeds.phibee-telecom.net!news.mixmin.net!proxad.net!feeder1-2.proxad.net!cleanfeed4-a.proxad.net!nnrp4-2.free.fr!not-for-mail 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 References: Organization: De Ster Mail-Copies-To: nobody User-Agent: MacSOUP/2.8.5 (ea919cf118) (Mac OS 10.12.6) Lines: 26 Message-ID: <673a5d0c$0$544$426a74cc@news.free.fr> NNTP-Posting-Date: 17 Nov 2024 22:15:57 CET NNTP-Posting-Host: 213.10.137.58 X-Trace: 1731878157 news-1.free.fr 544 213.10.137.58:50343 X-Complaints-To: abuse@proxad.net Bytes: 1565 rhertz 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