libration

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12:36 Apr 13, 2009
English to Norwegian translations [PRO]
Science - Astronomy & Space
English term or phrase: libration
Definition from astronomy.com:
The small oscillations in the moon’s motion that allow Earth-based observers to see slightly more than half the moon’s surface

Example sentence(s):
  • Libration is the apparent side to side rocking and up and down nodding of the Moon. There are two components: the more obvious "optical" and the very subtle "physical" libration. www3.telus.net
  • Although the Moon always presents us with the same face towards the Earth, due to its rotation and revolution being tidally locked to the same period, the combined effect of all these different librations allows us over time to see some 59% of the Moon's surface. Wertern Washington University
  • Libration in longitude is a consequence of the Moon's orbit around Earth being somewhat eccentric, so that the Moon's rotation sometimes leads and sometimes lags its orbital position. NationMaster.com
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Summary of translations provided
5librasjon
Lars Finsen


  

Translations offered


2 hrs   confidence: Answerer confidence 5/5
librasjon


Definition from own experience or research:
Tilsynelatenede bevegelser av et himmellegeme som har bunden rotasjon i forhold til sentrallegemet, f.eks. Månens tilsynelatende svingninger i forhold til Jorda som gjør at vi kan se mer enn halve overflata.

Example sentence(s):
  • Dette gir en librasjon i lengde: det ser ut som om månen vipper litt fram og tilbake i løpet av et omløp om jorda. - Astrofysisk institutt, Univ. i Oslo  
  • Også ganske gunstig librasjon for Mare Australe som vi vil prøve å finne langs randen i sørøst. - Trondheim Astronomiske Forening  
  • Men på grunn av Månens librasjon, det vil si dens tilsynelatende vingling om sin egen akse fra side til side sett i forhold til Jorden, bør et radiobservatorium plasseres ved minst 101° østlig eller vestlig lengdegrad for å være tilstrekkelig skjermet fra Jorden. - Norsk Astronomisk Selskap  

Explanation:
Siden definisjonene både i SNL og Caplex er litt misvisende, tilbyr jeg min egen.
Lars Finsen
Local time: 17:39
Native speaker of: Native in NorwegianNorwegian
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