Quantum redactiones paginae "Annus luce mensus" differant

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Summarium vacuum
(de celeritate lucis et vacuo)
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[[Fasciculus:The bright star Alpha Centauri and its surroundings.jpg|thumb|Systema [[Alpha Centauri]], consistensquae [[Astrum|astrorumstella]]rum trium est, proximi Solem iacunt cumcirca 4.37 [[annus luce mensus|anni luce mensi]] a [[Tellus (planeta)|Tellure]] iacit.]]
[[Fasciculus:The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory - 20100819.jpg|thumb|Lux [[Sol]]is, stella [[minutumSystema Solaris|minutaSystematis Solaris]]; eius [[lux]] octo [[minutum|minuta]] ad [[Tellus (planeta)|Terram]] vehi capit.]]
 
'''Annus luce mensus'''<ref>[http://eweb.furman.edu/~dmorgan/lexicon/silva.htm Lexicon Morgan]; [http://books.google.fi/books?id=0PXHgsvKqkkC&pg=PA79&lpg=PA79&dq=%22annus+luce+mensus%22&source=bl&ots=phETBFMJUL&sig=Fr4J3aswEaX9OaqbwvCBiKROr40&hl=fi&ei=Ev-qTrb9J8P34QTzjYXdDg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBsQ6AEwAA#v=onepage&q&f=false José Juan Del Col, ''Diccionario auxiliar: español-latino para el uso moderno del Latín.'']; Tuomo Pekkanen & Reijo Pitkäranta, ''Lexicon hodiernae Latinitatis Finno-Latino-Finnicum'' (Helsinki: SKS 2005) s.v. ''Valovuosi''.</ref><ref>[[Ebbe Vilborg]]. ''Norstedts svensk-latinska ordbok''. Editio secunda anni 2009.</ref> (abbreviatio internationalis '''ly''')<ref>Ex [[Lingua Anglica|Anglico]] ''light-year'' sc. "annus lucis"</ref> est illud spatium quod [[celeritas lucis|lux]] per unum [[annus|annum]] in spatio [[vacuum|vacuo]] pervolare potest. Unus annus luce mensus aequat fere 9 460 500 000 000 [[chiliometrum|km]]. Longitudo exacta dependet a definitione anni (sive annus tropicalis sive annus Iulianus sive annus sideralis significatur). [[Unio Astronomica Internationalis]] annum Iulianum praefert. Itaque 1 ly aequat 9 460 730 472 580 800 [[metrum|m]]. Unum spatium lucis annuae aequat 63 240 [[unitas astronomica|ua]] (unitatum astronomicarum) vel 0,3066 pc (parsec).
 
Astronomi unitatibus spatii lucis ad distantias astronomicas metiendum utuntur. [[Tellus (planeta)|Terra]], exempli causa, a [[Sol]]e circiter octo spatia lucis minutalis abest. Proxima stella praeter Solem, id est [[Proxima Centauri]], plus quattuor annos lucis abest.
 
== Vide etiam ==
* [[Unitas astronomica]]
 
== Notae ==
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