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Svjetlosna godina Svjetlosna godina u metrima | Veća jedinica | Navigacijski meni

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Multi tool use

AstronomijaMjerne jedinice u astronomiji


engl.astronomskamjerna jedinicaduljinusvjetlostvakuumutropsku godinuBrzina svjetlostisunčeva godinaparsek










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Svjetlosna godina




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Disambig.svg "Gs" preusmjerava ovdje. Za ostala značenja, v. Gs (razvrstavanje).


Disambig.svg "Ly" preusmjerava ovdje. Za ostala značenja, v. Ly (razvrstavanje).

Svjetlosna godina (ili godina svjetlosti; znak gs ili engl. ly od light year) astronomska je mjerna jedinica za duljinu; to je duljina (udaljenost) koju svjetlost prijeđe u vakuumu za jednu tropsku godinu.



Svjetlosna godina u metrima |


Brzina svjetlosti je 3*10 8 m/s, u godini dana ima 60*60*24*365 = 31.536.000 sekundi, i koristeći formulu s = v * t, udaljenost ispada 9.460.800.000.000.000 metara.


Naravno, brzina svjetlosti na nekoliko decimala više :-) iznosi 2,997.924.580 * 108 m/s, pa je točnija udaljenost 9.454.254.955.488.000 metara, ili nešto malo manje od devet i pol milijuna milijuna kilometara.


Kako godina dana (sunčeva godina) ima 365 dana 5 sati 48 minuta i 45 sekundi, broj sekundi je zapravo 31.556.925 - a udaljenost iznosi 9.460.528.112.671.650 metara.



Veća jedinica |


Veća astronomska jedinica je parsek (pc): 1 pc = 3,26 gs.









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