Lwm qhov kev ntsuas ntawm qhov ci yog luminosity, uas yog lub zog ntawm lub hnub qub - lub zog (lub teeb) uas lub hnub qub tawm ntawm nws qhov chaw. Nws yog feem ntau qhia nyob rau hauv watts thiab ntsuas nyob rau hauv cov nqe lus ntawm lub luminosity ntawm lub hnub. Piv txwv li, lub hnub lub luminosity yog 400 trillion trillion watts.
Lub hnub qub ci ntsa iab qhia peb li cas?
Luminosity, L, yog ntsuas ntawm tag nrho cov zog ntawm lub zog hluav taws xob los ntawm lub hnub qub lossis lwm yam khoom ntuj ceeb tsheej ib ob. Qhov no yog li ntawd lub zog tso zis ntawm lub hnub qub. Lub hnub qub lub zog tso tawm thoob plaws tag nrho cov wavelengths hu ua nws bolometric luminosity.
YPuas luminosity tib yam li ci?
Luminosity yog tus nqi ntawm lub hnub qub radiates zog rau hauv qhov chaw. Pom meej ci ntsa iab yog tus nqi ntawm lub hnub qub lub zog hluav taws xob mus txog tus neeg soj ntsuam hauv ntiaj teb.
luminosity ntawm lub hnub qub ntsuas li cas?
Hauv astronomy, luminosity yog tag nrho cov hluav taws xob hluav taws xob tawm hauv ib chav tsev ntawm lub sijhawm los ntawm lub hnub qub, galaxy, lossis lwm yam khoom siv hnub qub. Hauv SI units, luminosity yog ntsuas hauv joules ib ob, lossis watts. … Pom meej qhov loj yog ib qho kev ntsuas logarithmic ntawm pom qhov kaj.
Dab tsi yog qhov siab luminosity rau lub hnub qub?
Luminosity of Star=R2 x T4
Daim duab HR categorizes hnub qub los ntawm qhov kub thiab txias thiab luminosity. Kub hnub qub xiav, tshaj 30,000 Kelvin, sab laug; thiab txias hnub qub liab, tsawg dua 3,000 Kelvin, ntawm txoj cai. Cov hnub qub uas ci ntsa iab tshaj plaws - tshaj 1, 000, 000 hnub ci - nyob rau saum toj, thiab lub hnub qub ci tsawg tshaj plaws - 1/10, 000 hnub ci - hauv qab.
