Video: Redshift yog dab tsi thiab nws siv li cas hauv astronomy?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hloov maj mam hloov ntawm cov xim ntawm lub hnub qub cia cov astronomers nrhiav cov ntiaj chaw, ntsuas qhov ceev ntawm galaxies, thiab taug qab kev nthuav dav ntawm lub ntiaj teb. Astronomers siv redshifts txhawm rau taug qab qhov kev sib hloov ntawm peb lub galaxy, tawm tsam qhov hloov maj mam rub ntawm lub ntiaj teb nyob deb ntawm nws niam nws txiv lub hnub qub, thiab ntsuas qhov nthuav dav ntawm lub ntiaj teb.
Ib yam li ntawd, dab tsi yog redshift hauv astronomy?
' Liab hloov ' yog lub ntsiab lus tseem ceeb rau cov astronomers . Lub sij hawm tuaj yeem nkag siab qhov tseeb - lub wavelength ntawm lub teeb yog ncab, yog li lub teeb pom tau tias 'hloov' mus rau qhov liab ntawm lub spectrum. Ib yam zoo li no tshwm sim rau lub suab nthwv dej thaum lub hauv paus ntawm lub suab txav mus rau tus neeg soj ntsuam.
Tom qab, lo lus nug yog, ua li cas astronomers siv redshift los txiav txim nyob deb? Cosmological Redshift Astronomers kuj siv redshift los ntsuas kwv yees nyob deb mus rau galaxies nyob deb heev. Qhov ntau qhov khoom nyob deb, nws yuav ntau dua redshifted . Qee yam khoom nyob deb heev tuaj yeem tawm lub zog hauv ultraviolet lossis lub zog ntau dua.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog redshift thiab Blueshift?
Blueshift . A blueshift yog ib qho kev txo qis hauv wavelength (nce hauv lub zog), nrog rau qhov sib npaug ntawm qhov zaus, ntawm ib qho hluav taws xob nthwv dej; qhov opposite nyhuv yog hu ua redshift . Nyob rau hauv lub teeb pom kev, qhov no hloov xim los ntawm liab kawg ntawm lub spectrum mus rau xiav kawg.
Doppler effect siv li cas hauv astronomy?
Astronomers siv lub doppler nyhuv los kawm txog kev txav ntawm cov khoom thoob plaws lub ntiaj teb, los ntawm cov ntiaj chaw nyob ze extrasolar mus rau kev nthuav dav ntawm cov galaxies nyob deb. Doppler hloov yog qhov kev hloov ntawm qhov ntev ntawm nthwv dej (lub teeb, suab, thiab lwm yam) vim qhov kev sib txheeb ntawm qhov chaw thiab txais.
Pom zoo:
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