Qhov txawv ntawm De Broglie Wavelength thiab Wavelength

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Qhov txawv ntawm De Broglie Wavelength thiab Wavelength
Qhov txawv ntawm De Broglie Wavelength thiab Wavelength

Video: Qhov txawv ntawm De Broglie Wavelength thiab Wavelength

Video: Qhov txawv ntawm De Broglie Wavelength thiab Wavelength
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Qhov sib txawv tseem ceeb ntawm De Broglie wavelength thiab wavelength yog tias De Broglie wavelength piav txog lub zog nthwv dej ntawm cov khoom loj, whereas wavelength piav txog lub zog ntawm nthwv dej.

Feem ntau, lub sij hawm wavelength yog hais txog lub sij hawm spatial ntawm lub sij hawm tsis ua hauj lwm; Hauv lwm lo lus, nws yog qhov kev ncua deb uas lub nthwv dej ntawm cov duab rov ua dua. Yog li ntawd, peb tuaj yeem ntsuas nws raws li qhov kev ncua deb ntawm cov ntsiab lus sib law liag ntawm tib theem ntawm nthwv dej. E.g. ob lub troughs nyob ib sab. Piv txwv ntawm nthwv dej muaj xws li electromagnetic tsis, seismic nthwv dej, kev co hauv ib txoj hlua guitar, ripples ntawm cov dej, thiab lwm yam. Txawm li cas los xij, qee zaum cov khoom ua haujlwm zoo li nthwv dej (yoj-particle dual). Nyob rau lub sijhawm zoo li no, peb tuaj yeem ntsuas lub wavelength los ntawm De Broglie wavelength.

De Broglie Wavelength yog dab tsi?

De Broglie wavelength yog ib lub tswv yim hauv chemistry uas muaj txiaj ntsig zoo los txiav txim siab yoj lub zog ntawm cov teeb meem. Cov ntaub ntawv tsis yog sib tham hauv quantum mechanics, ua piv txwv rau nthwv dej-particle dual. Txhua yam teeb meem coj li ob qho tib si hais thiab nthwv dej. E.g. ib lub teeb ntawm electrons tuaj yeem cuam tshuam zoo ib yam li lub teeb ntawm lub teeb yoj.

Qhov txawv tseem ceeb - De Broglie Wavelength vs Wavelength
Qhov txawv tseem ceeb - De Broglie Wavelength vs Wavelength

Daim duab 01: Teeb meem Wave; Hais txog Diffraction of Electrons

Lub tswv yim tshuaj hais txog tus cwj pwm zoo li nthwv dej ntawm cov khoom yog thawj zaug los ntawm tus kws tshawb fawb Louis de Broglie hauv xyoo 1924. Yog li ntawd, peb tuaj yeem hu nws ua de Broglie hypothesis. Ib yam li ntawd, peb tuaj yeem muab lub npe wavelength ntawm cov teeb meem nthwv dej li de Broglie wavelength, uas yog txhais los ntawm lambda, λ. Qhov no wavelength yog muab rau ib tug particle muaj ib tug loj as opposed rau ib tug massless particle. Ntxiv mus, de Broglie wavelength muaj feem xyuam rau lub zog ntawm cov particle uas yog denoted los ntawm p. Kev sib raug zoo ntawm de Broglie wavelength thiab lub zog ntawm cov particle yog raws li nram no:

λ=h/p

Ntawm no, "h" yog Planck tas li. Txawm li cas los xij, tus cwj pwm zoo li nthwv dej ntawm cov teeb meem tau sim ua kom pom los ntawm George Paget Thomson qhov kev sim hlau diffraction. Qhov kev sim no tau lees paub rau cov khoom me me, nruab nrab atoms thiab txawm tias qee qhov me me molecules.

Dab tsi yog Wavelength?

Wavelength yog lub sijhawm spatial ntawm ib ntus nthwv dej. Hauv lwm lo lus, nws yog qhov kev ncua deb uas cov nthwv dej zoo li rov ua dua. Peb tuaj yeem soj ntsuam lub wavelength raws li qhov kev ncua deb ntawm cov ntsiab lus sib law liag ntawm tib theem ntawm nthwv dej. E.g. Ob qho tib si crests, troughs, xoom crossings, thiab lwm yam. Tsis tas li ntawd, lub wavelength yog yam ntxwv rau ob qho tib si taug kev tsis muaj zog thiab sawv nthwv dej nrog rau lwm cov qauv spatial yoj.

Qhov txawv ntawm De Broglie Wavelength thiab Wavelength
Qhov txawv ntawm De Broglie Wavelength thiab Wavelength

Daim duab 02: Wave Lengths of Different Wave

Kev hloov pauv ntawm lub wavelength ntawm nthwv dej muab qhov zaus ntawm nthwv dej. Yog li ntawd, nthwv dej uas muaj ntau zaus muaj luv dua wavelength thiab vice versa. Peb tuaj yeem qhia qhov wavelength los ntawm Greek tsab ntawv lambda, λ. Lub wavelength ntawm ib nthwv dej feem ntau yog nyob ntawm qhov nruab nrab los ntawm qhov uas cov nthwv dej dhau-E.g. Lub tshuab nqus tsev, huab cua, dej, thiab lwm yam. Tsis tas li ntawd, ntau lub wavelengths lossis frequencies hu ua spectrum.

Qhov txawv ntawm De Broglie Wavelength thiab Wavelength yog dab tsi?

Wavelength yog ib yam khoom ntawm nthwv dej xws li nthwv dej electromagnetic. Qee zaum, cov khoom kuj ua raws li cov nthwv dej; ntawm no, peb tuaj yeem txiav txim siab lub wavelength li De Broglie wavelength. Qhov sib txawv tseem ceeb ntawm De Broglie wavelength thiab wavelength yog tias De Broglie wavelength piav txog yoj lub zog ntawm ib qho loj, whereas wavelength piav txog lub zog ntawm nthwv dej.

Hauv qab infographic qhia ntau cov ntsiab lus ntawm qhov sib txawv ntawm De Broglie wavelength thiab wavelength.

Qhov txawv ntawm De Broglie Wavelength thiab Wavelength nyob rau hauv daim ntawv Tabular
Qhov txawv ntawm De Broglie Wavelength thiab Wavelength nyob rau hauv daim ntawv Tabular

Summary – De Broglie Wavelength vs Wavelength

Wavelength yog ib yam khoom ntawm nthwv dej xws li nthwv dej electromagnetic. Qee zaum cov khoom kuj ua raws li cov nthwv dej uas peb tuaj yeem txiav txim siab lub wavelength li De Broglie wavelength. Qhov sib txawv tseem ceeb ntawm De Broglie wavelength thiab wavelength yog tias De Broglie wavelength piav txog lub zog yoj ntawm cov khoom loj, thaum lub wavelength piav txog lub zog ntawm nthwv dej.

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