Video: Peb yuav ua li cas thiaj paub qhov kub ntawm cov hnub qub?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Txog qhov uas Stellar spectra zoo li blackbodies, lub kub ntawm a hnub qub kuj tuaj yeem ntsuas tau zoo kawg nkaus los ntawm kev kaw qhov ci hauv ob lub lim dej sib txawv. Kom tau ib tug stellar kub : Ntsuas qhov ci ntawm a hnub qub los ntawm ob lub lim dej thiab sib piv qhov piv ntawm lub teeb liab rau xiav.
Yog li ntawd, lawv ntsuas qhov kub ntawm lub hnub li cas?
Los ntawm ntsuas lub brightness faib ntawm cov hnub thiab haum nws nrog Planck txoj cai, lub Hnub ''s kub tuaj yeem kwv yees. Cov hnub emits siab tshaj plaws ntawm qhov pom lossis daj wavelength thiab qhov sib xws kub yog hais txog 6000 degree Kelvin.
Ib sab saum toj no, qhov kub thiab txias ntawm cov hnub qub yog dab tsi? Hom A hnub qub , uas yog kub, yog xim dawb thiab tuav kub ntawm ib ncig ntawm 10, 000 ° C los yog 18, 000 ° F. Qhov kub tshaj plaws ntawm hom, B thiab O, yog xiav hnub qub thaum qhov txias tshaj plaws ntawm hom M yog xim liab thiab muaj qhov kub thiab txias 3, 000 ° C los yog 5, 400 ° F.
Ib sab ntawm no, koj pom qhov kub ntawm lub hnub qub nrog lub wavelength li cas?
Rau ib tug blackbody radiator, lub kub tuaj yeem pom los ntawm wavelength ntawm qhov uas cov hluav taws xob nkhaus peaks. Yog tias kub yog = C = K, ces tus wavelength Nyob rau hauv uas lub radiation nkhaus peaks yog: λncov = x10^m = nm = microns.
Qhov chaw txias npaum li cas?, -454.81 Fahrenheit
Pom zoo:
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