Video: Cov hnub qub twg tau tawm ntawm qhov tseem ceeb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov Kawg ntawm Main Sequence
Qhov loj, txias hnub qub nyob rau sab xis ntawm daim duab H-R yog hnub qub uas muaj tsis ntev los no sab laug lub ntsiab ib ntus . Hauv qhov nruab nrab hnub qub , zoo li peb lub hnub, lub siab los ntawm lub ntiajteb txawj nqus thawb sab hauv ua rau latent hydrogen nyob rau hauv lub plhaub txheej txheej ntawm lub hnub qub fuse rau helium.
Kuj paub, cov hnub qub twg tawm ntawm qhov tseem ceeb ua ntej?
Qhov loj tshaj plaws hnub qub yuav tawm ntawm qhov tseem ceeb ua ntej , ua raws li hauv ib ntus los ntawm hnub qub ntawm puas tsawg pawg.
Ib sab saum toj no, cov hnub qub puas txav raws cov kab ke tseem ceeb? Ib yam uas yuav tsum nco ntsoov yog qhov ntawd hnub qub ua tsis muaj kev vam meej nqes ntawm Main sequence ntawm sab laug mus rau sab xis ntawm ib HR diagram. Lawv mus nrog nws, tab sis ntawm ib qho chaw lawv yeej 'dhia' tawm, thaum cov hydrogen khiav tawm. Lawv mus qhov twg nyob ntawm ntawm lawv loj thiab muaj pes tsawg leeg.
Tom qab ntawd, ua li cas rau cov hnub qub thaum lawv tawm ntawm lub ntsiab lus sib lawv liag?
Tawm hauv Main Sequence Thaum twg hnub qub khiav tawm ntawm hydrogen, lawv pib fuse helium hauv lawv cov cores. Qhov no yog thaum lawv tawm ntawm lub ntsiab ua ntu zus . Loj heev hnub qub ua liab supergiants, thiab ces evolve los ua xiav supergiants. Thaum twg uas tshwm sim , cov txheej txheej sab nrauv ntawm lub hnub qub poob rau hauv lub hauv paus.
Dab tsi yog lub neej ntawm 10 hnub qub hnub qub ntawm lub ntsiab lus?
Lifespans rau lub hnub qub tseem ceeb muaj ntau yam. Hos peb lub hnub yuav siv 10 billion xyoo dhau los lub ntsiab ib ntus , ib- pawg , kaum hnub ci - pawg (10 MHnub) hnub qub yuav tsuas kav 20 lab xyoo (2.0 × 10 7 xyoo) nyob rau hauv lub ntsiab ib ntus . A hnub qub nrog ib nrab xwb pawg ntawm Sun tuaj yeem siv 80 billion xyoo rau ntawm lub ntsiab ib ntus.
Pom zoo:
Yam khoom twg feem ntau txiav txim siab seb lub hnub qub loj lossis lub hnub qub supergiant yuav tsim?
Pawg (1) feem ntau txiav txim siab seb lub hnub qub loj lossis lub hnub qub supergiant yuav tsim. Cov hnub qub tsim nyob rau hauv cov cheeb tsam ntawm qhov ntom ntom hauv thaj tsam interstellar. Cov cheeb tsam no yog hu ua molecular huab thiab muaj feem ntau ntawm hydrogen. Helium, nrog rau lwm cov ntsiab lus, kuj pom nyob rau hauv cheeb tsam no
Dab tsi yog cov ntsiab lus tseem ceeb ntawm chromosomal txoj kev xav ntawm kev qub txeeg qub teg?
Boveri thiab Sutton's chromosome txoj kev xav ntawm kev qub txeeg qub teg hais tias cov noob muaj nyob rau ntawm qhov chaw tshwj xeeb ntawm chromosomes, thiab tias tus cwj pwm ntawm chromosomes thaum meiosis tuaj yeem piav qhia Mendel txoj cai ntawm kev xeeb tub
Dab tsi yog qhov sib npaug thiab vim li cas nws tseem ceeb rau cov hnub qub?
Lub plhaub no pab txav cua sov los ntawm lub hauv paus ntawm lub hnub qub mus rau saum npoo ntawm lub hnub qub uas lub zog nyob rau hauv daim ntawv ntawm lub teeb thiab cua sov tawm mus rau hauv qhov chaw. Lub hnub qub lub hom phiaj tseem ceeb hauv lub neej yog kom ua tiav kev ruaj ntseg, lossis sib npaug. Lo lus equilibrium tsis txhais hais tias tsis muaj kev hloov hauv lub hnub qub
Vim li cas thiaj tswj tau qhov sib npaug tseem ceeb hauv cov hnub qub?
Lub zog sab hauv ntawm lub ntiajteb txawj nqus yog sib npaug los ntawm sab nraud quab yuam kom lub hnub qub ruaj khov. Lub hnub qub lub zog, los ntawm cov tshuaj tiv thaiv nuclear, yog tsim nyob rau hauv nws cov tub ntxhais ua tsaug rau lub siab kub ntawm cov tub ntxhais nws tus kheej. Nyob rau hauv lem, lub zog tsim los ntawm cov tshuaj tiv thaiv nuclear pab kom sib npaug ntawm sab hauv rub ntawm lub ntiajteb txawj nqus
Vim li cas qhov tseem ceeb ntawm qhov tseem ceeb?
Thaum koj pom tus nqi kiag li hauv qhov teeb meem lossis qhov sib npaug, nws txhais tau hais tias txhua yam nyob hauv tus nqi tiag tiag yog qhov zoo. Cov txiaj ntsig tsis zoo feem ntau siv rau hauv cov teeb meem cuam tshuam nrog kev nyob deb thiab qee zaum siv nrog qhov tsis sib xws. Qhov ntawd yog qhov tseem ceeb uas yuav tsum nco ntsoov nws zoo li qhov deb ntawm xoom