Gravitation: Forskelle mellem versioner
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Inc (diskussion | bidrag) m →Gravitation i klassisk mekanik: {{Uddybende|Newtonsk gravitation}} Tag: 2017-kilderedigering |
Inc (diskussion | bidrag) →Gravitation i den generelle relativitetsteori: {{uddybende}} + lidt ret Tag: 2017-kilderedigering |
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== Gravitation i den generelle relativitetsteori ==
{{Uddybende|Generel relativitetsteori}}
[[Albert Einstein|Einsteins]] [[relativitetsteori]] forudsiger, at gravitationens udbredelseshastighed skal være
<ref>[https://web.archive.org/web/20160730212313/http://www.astronomycafe.net:80/qadir/q2226.html Ask the Astronomer: If nothing can travel faster than light, why does gravity take affect instantly?] Citat: "...There is no observation that justifies this 'Newtonian' statement, and lots of evidence from special and general relativity that gravity obeys the speed limit set by the speed of light..."</ref>
<ref>[https://web.archive.org/web/20160730212747/http://www.astronomycafe.net:80/qadir/q1399.html Ask the Astronomer: Are we gravitationally affected by where an object is now, or where it was when the light we see started its journey to us? ] Citat: "...Because all indications are that gravity travels at the speed of light, we can only be affected by where a body is at the SAME time we see the light from it..."</ref>
Gravitationel interaktion kan altså ikke være øjeblikkelig.
[[Fil:Spacetime curvature.png|thumb|500px|Illustration af en større masses rumtidskrumning, der ikke roterer.]]
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