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A. Vychislenie parametra A0
V dannom prilozhenii vychislim parametr .
Rassmotrim elektromagnitnoe izluchenie s tochki zreniya kvantovoi
teorii kak potok elementarnyh chastic, nazyvaemyh fotonami.
Sledovatel'no, spektral'nuyu plotnost' potoka fotonov mozhno
opredelit' sleduyushim sootnosheniem:
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Uchityvaya, chto izluchenie Solnca yavlyaetsya izotropnym po vsem
napravleniyam, to kolichestvo energii, proshedshee cherez poverhnost'
Solnca , budet ravno kolichestvu energii, proshedshemu
cherez sferu radiusa
(
- rasstoyanie ot centra Solnca
do chasticy, smotri ris. 21) 10. T.e.
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Kak pokazyvayut issledovaniya, Solnce vedet sebya v aktah ispuskaniya
i poglosheniya izlucheniya podobno absolyutno chernomu telu.
Sledovatel'no, dlya my mozhem ispol'zovat' formulu
Planka dlya ispuskatel'noi sposobnosti AChT:
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Ris. 22. Zavisimost' spektral'noi ispuskatel'noi sposobnosti absolyutno chernogo tela (zvezdy) ot chastoty izlucheniya pri razlichnyh temperaturah: T=3500 K (Antares, α Skorpiona), T=5000 K (Arktur, α Volopasa), T=5777.11 K (Solnce). | Ris. 23. Zavisimost' spektral'noi ispuskatel'noi sposobnosti absolyutno chernogo tela (zvezdy) ot chastoty izlucheniya pri razlichnyh temperaturah: T=5777.11 K (Solnce), T=11 000 K (Vega, α Liry), T=20 000 K (Spika A, α Devy). |
Sledovatel'no,
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gde
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