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E=mc² (redigér)

Versionen fra 20. jan 2021, 07:01

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Ændrede 8 ud af 9 analyserede links, se hjælp) #IABot (v2.0.8
m (Fjerner LA)
Tag: 2017-kilderedigering
(Ændrede 8 ud af 9 analyserede links, se hjælp) #IABot (v2.0.8)
 
Gyldigheden af <math>E=mc^2</math> afhænger af, hvilken slags masse <math>m</math> refererer til.
 
I Einsteins tidlige afhandling <ref>[{{Cite web |url=http://www.fourmilab.ch/etexts/einstein/specrel/www/ |title=On the Electrodynamics of Moving Bodies<!-- Bot genereret titel -->] |access-date=23. januar 2006 |archive-date= 1. februar 2013 |archive-url=https://www.webcitation.org/6E6ZTmW6e?url=http://www.fourmilab.ch/etexts/einstein/specrel/www/ |url-status=ok }}</ref> blev <math>m</math> betragtet, som hvad vi nu kalder [[relativistisk masse]]. Dette er relateret til [[hvilemasse]] <math> m_0 </math> (dvs. legemets masse betragtet fra et referencepunkt, hvorfra det er i hvile) på følgende måde:
::<math>m = \gamma m_0 = \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}</math>
hvor <math>\gamma</math> er [[Lorentzfaktoren]].
=== Eksterne henvisninger ===
{{Commonscat|Einstein formula}}
* [http://news.bbc.co.uk/2/hi/science/nature/4457020.stm Happy 100th Birthday E=mc²] {{Webarchive|url=https://web.archive.org/web/20191216051018/http://news.bbc.co.uk/2/hi/science/nature/4457020.stm |date=16. december 2019 }} BBC
* [http://news.bbc.co.uk/2/hi/entertainment/4145797.stm Einstein's E=mc² inspires ballet] BBC
* [http://www.edwardmuller.com/right17.htm Edward Muller's Homepage > Antimatter Calculator] {{Webarchive|url=https://web.archive.org/web/20051225230710/http://www.edwardmuller.com/right17.htm |date=25. december 2005 }}
* [http://hypertextbook.com/facts/2000/MuhammadKaleem.shtml Energy of a Nuclear Explosion] {{Webarchive|url=https://web.archive.org/web/20070810132732/http://hypertextbook.com/facts/2000/MuhammadKaleem.shtml |date=10. august 2007 }}
* [http://www.fourmilab.ch/etexts/einstein/E_mc2/www/ Albert Einstein’s Sep. 27, 1905 paper] {{Webarchive|url=https://web.archive.org/web/20190302045953/http://www.fourmilab.ch/etexts/einstein/E_mc2/www/ |date= 2. marts 2019 }}
* [http://www.symmetrymag.org/cms/?pid=1000067 Einstein's 1912 manuscript page displaying E=mc²] {{Webarchive|url=https://web.archive.org/web/20061002182826/http://www.symmetrymag.org/cms/?pid=1000067 |date= 2. oktober 2006 }}
* [http://www.pbs.org/wgbh/nova/einstein/ NOVA – Einstein's Big Idea] {{Webarchive|url=https://web.archive.org/web/20190925093551/https://www.pbs.org/wgbh/nova/video/einsteins-big-idea |date=25. september 2019 }} (PBS Television)
* [http://www.imdb.com/title/tt0476209/ Film: E=mc²] {{Webarchive|url=https://web.archive.org/web/20060308142022/http://imdb.com/title/tt0476209/ |date= 8. marts 2006 }}
 
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