Video: Qhov kev sib raug zoo ntawm qhov kub thiab qhov wavelength yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Txawm li cas los xij, daim ntawv ntawm txoj cai tseem zoo ib yam: lub ncov wavelength yog inversely proportional rau kub , thiab lub ncov zaus yog ncaj qha proportional rau kub.
Tom qab ntawd, ib tug kuj yuav nug, yuav ua li cas yog lub ncov wavelength ntawm kub T '?
Nws hais tias qhov siab dua kub , qhov qis dua wavelength λ max rau qhov uas cov hluav taws xob nkhaus ncav cuag nws qhov siab tshaj plaws. Hloov mus rau luv dua wavelengths sib raug rau photons ntawm lub zog siab dua. Hauv lwm lo lus, λ max ( ncov wavelength ) yog inversely proportional rau kub.
Ib sab saum toj no, wavelength thiab lub zog cuam tshuam li cas? Vim zaus thiab wavelength yog ntsig txog los ntawm qhov tsis tu ncua (c) lub zog tuaj yeem sau rau hauv cov nqe lus ntawm wavelength : E = h · c / λ. Thaum lub zog nce lub wavelength txo qis thiab vice versa. Ntawd yog, zog nyob rau hauv inversely proportional rau wavelength.
Kuj nug, qhov kub li cas cuam tshuam nrog zaus?
Yog li peb hais tau li ntawd Ntau zaus yog ncaj qha proportional rau lub hauv paus square ntawm kub . Yog li ntawd, nyob rau hauv nce kub , kev sib tsoo zaus nce thiab li no, cov feem ntawm kev sib tsoo zoo nce, yog li cov kev sib tsoo no ua rau thiab nce lub zog ntawm cov reactants.
Lub mis rau Wien txoj cai yog dab tsi?
Wien txoj cai. Ntawm no, lambda max (hauv meters) yog sib npaug rau qhov tsis tu ncua, b, muab faib los ntawm a kub , T (hauv kelvin). Qhov tas li muaj tus nqi ntawm 2.9 * 10^-3 m K. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias Wien txoj cai muab koj lub wavelength ntawm qhov siab tshaj plaws emission nyob rau hauv meters.
Pom zoo:
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