Video: Puas yog dawb lossis xim dub cuam tshuam lub teeb ntau dua?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A dub khoom absorbs tag nrho cov wavelengths ntawm teeb thiab hloov lawv mus rau hauv tshav kub, yog li cov khoom tau sov. A dawb khoom xav txog tag nrho cov wavelengths teeb , yog li ntawd teeb tsis hloov mus rau hauv tshav kub thiab qhov kub ntawm qhov khoom ua tsis nce noticeably.
Ib yam li ntawd, tej zaum koj yuav nug, cov xim twg muaj feem cuam tshuam lub teeb tshaj plaws?
Dawb lub teeb muaj tag nrho cov wavelengths ntawm lub spectrum pom, yog li thaum lub xim dawb yog tau reflected, uas txhais tau hais tias tag nrho cov wavelengths yog reflected thiab tsis muaj absorbed, ua dawb feem ntau reflective xim.
Qhov thib ob, puas yog dawb lossis nyiaj pom kev pom ntau dua? Txog tam sim no tsawg dua teeb yog xav txog tshaj koj tau los ntawm ib dawb yam khoom. Nyiaj yog a dawb hlau. Vim tsis muaj tiag dawb yam khoom xav txog tag nrho cov teeb ces cov tsom iav tsom teeb ntau dua tshaj qhov tiag dawb khoom.
Ntawm no, puas dawb xav lossis nqus lub teeb?
Lub teeb dawb yog sib tov ntawm tag nrho cov xim, nyob rau hauv roughly sib npaug proportions. Dawb khoom saib dawb vim lawv xav txog rov qab tag nrho cov pom wavelengths ntawm teeb uas ci rau lawv - yog li ntawd teeb tseem zoo li dawb rau peb. Cov khoom xim, ntawm qhov tod tes, xav txog rov qab tsuas yog qee qhov wavelengths; tus so lawv nqus.
Nws puas zoo dua hnav dub lossis dawb hauv lub hnub?
Dub nws absorbs cua sov los ntawm lub hnub ntawm lub nrawm nrawm dua dawb , mas dub kuj absorbs cua sov los ntawm koj lub cev thiab. " Dawb Cov khaub ncaws qhia txog lub hnub ci, tab sis kuj tseem qhia txog cov cua sov sab hauv rov qab los ntawm koj lub cev, yog li cov txiaj ntsig zoo nyob rau hauv cov xwm txheej zoo ib yam tsis txias dua li yog tias koj hnav. dub ."
Pom zoo:
Dab tsi cuam tshuam lub teeb zoo dua dawb lossis nyiaj?
Txog tam sim no lub teeb pom kev tsawg dua li koj tau txais los ntawm cov khoom dawb. Nyiaj yog dawb hlau. Ib daim iav ua los ntawm cov nyiaj polished yuav muaj kev cuam tshuam tib yam ntawm lub teeb raws li cov nyiaj tsis muaj polished. Txij li thaum tsis muaj cov tshuaj dawb tiag tiag cuam tshuam tag nrho lub teeb, cov iav no muaj kev cuam tshuam ntau dua li cov khoom dawb tiag tiag
Puas yog cov plaub hau daj lossis cov plaub hau xim av muaj ntau dua?
Cov plaub hau xim av yog qhov tseem ceeb tshaj cov plaub hau daj. Cov me nyuam uas muaj ib tug xim av-haired allele thiab ib tug blonde-haired allele yuav nthuav cov plaub hau xim av thiab. Tsuas yog cov uas muaj ob lub ntsej muag plaub hau daj yuav muaj cov plaub hau daj
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Paub qhov txawv ntawm kev cuam tshuam kev tsim kho thiab kev cuam tshuam puas tsuaj. Kev tsim kev cuam tshuam tshwm sim thaum lub crests ntawm ob nthwv dej ntxiv ua ke. Kev cuam tshuam kev puas tsuaj tshwm sim thaum lub crest ntawm ib yoj raug txo los ntawm lub trough ntawm lwm tus
Qhov txawv ntawm lub teeb dawb thiab lub teeb dub yog dab tsi?
Dub tsuas yog qhov tsis muaj lub teeb, vim tias nws tsis nyob los yog vim nws tau nqus thiab tsis pom. Yog li hu ua 'dub teeb' tsuas yog ultra-violetlight, uas yog lub teeb zoo tib yam (electromagneticradiation) uas yog siab tshaj qhov pom spectrum. Lub teeb twg hu ua lub teeb dawb?