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Gaismas gads Lielums | Atsauces | Navigācijas izvēlneStarptautiskā Astronomiskā apvienība. Astronomiskās mērvienībaspapildinot toll

Nepabeigti raksti par astronomijuGaruma mērvienībasAstronomiskās mērvienības


astronomijāgaismaJūlija gadafotonsvakuumāgadāzvaigznēm










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Gaismas gads




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Gaismas gads ir garuma mērvienība astronomijā. Tas ir attālums, ko gaisma veic viena Jūlija gada laikā[1]. To apzīmē ar ly (no vārdiem light year).



Lielums |


  • 1 ly = 9 460 730 472 580 800 m ≈ 9,46 × 1012km ≈ 63241 AU ≈ 0,3066 pc

Tas ir attālums, ko veiktu fotons vakuumā bezgalīgi tālu no jebkādiem gravitācijas un magnētiskajiem laukiem vienā 365,25 dienu garā gadā.


Gaismas gadu bieži lieto, lai raksturotu attālumus starp zvaigznēm.



Atsauces |




  1. Starptautiskā Astronomiskā apvienība. Astronomiskās mērvienības









Saturs iegūts no "https://lv.wikipedia.org/w/index.php?title=Gaismas_gads&oldid=2364697"










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