hnub qub muaj xim sib txawv, uas yog qhov ntsuas kub. Cov hnub qub kub tshaj plaws yuav tshwm sim xiav lossis xiav-dawb, whereas lub hnub qub txias tshaj plaws red.
hnub qub xim yog dab tsi?
xim ntawm lub hnub qub yog txuas rau nws qhov kub thiab txias. Qhov kub ntawm lub hnub qub, qhov luv luv lub wavelength ntawm lub teeb nws yuav emit. Cov kub tshaj plaws yog xiav lossis xiav-dawb, uas yog luv dua wavelengths ntawm lub teeb. Cov txias txias yog xim liab los yog xim liab-xim av, uas yog ntev wavelengths.
Dab tsi yog lub hnub qub kub kub?
hnub qub dawb kub dua liab thiab daj. Blue stars yog hnub qub kub tshaj plaws ntawm txhua tus.
Peb lub hnub qub daj lossis dawb?
Peb lub hnub (uas yog ib lub hnub ci loj) yog yellow dwarf star. Lo lus "dwarf daj" tsis zoo, vim tsis yog txhua lub hnub qub daj daj daj. Ib txhia yog dawb. Peb lub hnub yog ib qho ntawm cov no; nws yeej dawb.
Puas yog hnub qub dawb?
Ntau lub hnub qub hmo ntuj ntuj tshwm sim dawb thaum lawv yeej tsis yog. Muaj ntau yam xim liab, xiav, ntsuab, txiv kab ntxwv thiab lwm yam. Tab sis vim lawv nyob deb ntawm peb lub xyoo, peb lub qhov muag tsis tshua muaj peev xwm paub qhov txawv xim thiab peb pom nws dawb los yog xiav me ntsis.
