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Groups > sci.physics > #894903
| From | "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> |
|---|---|
| Newsgroups | sci.physics.relativity, sci.physics |
| Subject | Re: Mass and Energy |
| Date | 2026-01-07 13:20 -0800 |
| Organization | A noiseless patient Spider |
| Message-ID | <10jminm$10o7d$1@dont-email.me> (permalink) |
| References | <mass-20260101165158@ram.dialup.fu-berlin.de> <10jeg8i$29998$1@dont-email.me> <ms3u8jFkcc6U1@mid.individual.net> <10jk0cr$5jvc$1@dont-email.me> |
Cross-posted to 2 groups.
On 1/6/2026 1:57 PM, Paul.B.Andersen wrote: > Den 06.01.2026 09:15, skrev Thomas Heger: >> Am Sonntag000004, 04.01.2026 um 20:51 schrieb Paul.B.Andersen: >>> >>> E = mc² is the energy content, or the energy equivalent of >>> the mass m. Mass is invariant, so this equation is valid for >>> all speeds of the mass. >> >> You contradicted yourself!! >> >> Here your claim is, that mass is invariant, while a little below you >> claim, that energy is conserved, while mass has vanished from a >> radioactive sample. >> >> But you can't keep both claims, because they contradict each other. > > > Invariant means "the same in all frames of reference" > or "independent of speed". > > It does _not_ mean "constant". > > Mass is invariant. > The mass of an object is the same in all frames of reference. > The mass of an object does not depend on the speed of the object. > > But mass can change. Heat the object, and its mass will increase, > > I have told you before, but I know you will not learn. > You never do. > > Its odd to think of a cup of water as the water evaporates. The cup is an object with its own mass. But, now its holding water. So, the cup "weighs" more in a sense... But, as the water evaporates, that weight will go back to the weight of the original cup... Think of two equal mass cups on a scale. They balance. Add water to one, its not balanced. However, the water will evaporate and the scale shall go back to balanced over time?
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Mass and Energy ram@zedat.fu-berlin.de (Stefan Ram) - 2026-01-01 16:19 +0000
Re: Mass and Energy nospam@de-ster.demon.nl (J. J. Lodder) - 2026-01-01 22:38 +0100
Re: Mass and Energy x <x@x.net> - 2026-01-02 10:03 -0800
Re: Mass and Energy x <x@x.net> - 2026-01-02 10:06 -0800
Re: Mass and Energy Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-01-02 21:07 +0100
Re: Mass and Energy "Paul.B.Andersen" <relativity@paulba.no> - 2026-01-04 20:51 +0100
Re: Mass and Energy Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-01-06 03:04 +0100
Re: Mass and Energy Thomas Heger <ttt_heg@web.de> - 2026-01-06 09:15 +0100
Re: Mass and Energy "Paul.B.Andersen" <relativity@paulba.no> - 2026-01-06 22:57 +0100
Re: Mass and Energy Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-01-06 23:51 +0100
Re: Mass and Energy "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-01-07 13:20 -0800
Re: Mass and Energy "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-01-07 13:29 -0800
Re: Mass and Energy Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-01-07 22:53 +0100
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