prakaash-varsh

1 prakaash-varsh =
SI ikaaiyaaain
9.461×1012 km 9.461×1015 m
khagoleeya ikaaiyaaain
63.24×103 AU {{{m}}}/1|{{{a}}}+0}} ly
US customary / Imperial units
5.879×1012 mi 31.04×1015 ft

prakaash varsh (chinh:ly) lambaai ki maapan ikaai hai. yeh lagbhag das triliyn kilometer ke andar hoti hai. antarraashtreeya khagoleeya sangh ke anusaar, prakaash varsh vah doori hai, jo prakaash dvaara nirvaat mein, ek varsh mein poori ki jaati hai.[1] yeh lambaai maapane ki ek ikaai hai jise mukhyat: lambi dooriyon yatha do nakshatron (ya taa‍aaron) beech ki doori ya isi prakaar ki anya khagoleeya dooriyon ko maapane mai prayog kiya jaata hai.

anukram

ankeeya maan

ek prakaash varsh baraabar hota hai:

uparokt aankade jooliyn varsh (na ki gregoriyn varsh) poore 365.25 divson ke (pratyek diwas poore 86,400 SI saikindon ka, kul milaakar 31,557,600 saikind) baraabar hota hai, jaisa ki IAU dvaara paribhaashit hai.[2]

prakaash varsh ka prayog praay: taaron ki dooriyaan naapane hetu hota hai. iski adhimaanya ikaai hai paarasaik. paarasaik ki paribhaasha anusaar vah doori hai jo, jitni doori par ek vastu digbhed ke ek aarksaikind ke baraabar hilti prateet hoti hai, jab prekshak ek khagoleeya ikaai apni dॄshti rekha ke abhilmb chalta hai. yeh lagbhag 3.26 prakaash-varshon ke baraabar hota hai. paarasaik ko anya ikaaiyon ki tulana mein adhik saralata se paryavekshan aankado se Milan aur vyutpann kiya ja sakta hai. vaise vaigyaanik varg mein prakaash varsh hi adhik prachalit hai.

pramukh dooriyaan (prakaash varsh mein)

sandarbh

inhein bhi dekhein

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prakaash varsh ko vikshanari,
ek mukt shabdakosh mein dekhein.