Yuav ua li cas koj xam lub zog ntawm ib tug electromagnetic yoj?
Yuav ua li cas koj xam lub zog ntawm ib tug electromagnetic yoj?

Video: Yuav ua li cas koj xam lub zog ntawm ib tug electromagnetic yoj?

Video: Yuav ua li cas koj xam lub zog ntawm ib tug electromagnetic yoj?
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Cov zog nqa los ntawm ib qho yoj yog proportional rau nws amplitude squared. Rau electromagnetic tsis , qhov no txhais tau tias kev siv zog tuaj yeem qhia tau tias Iave = cϵ0E202 I ave = c ϵ 0 E 0 2 2, qhov twg kuvave yog qhov nruab nrab siv hauv W / m2, thiab E0 yog lub siab tshaj plaws hluav taws xob teb lub zog ntawm ib tug nruam sinusoidal yoj.

Kuj tseem yuav paub yog, lub zog ntawm electromagnetic yoj yog dab tsi?

Electromagnetic tsis coj zog mus rau hauv ib qho system los ntawm kev tsim txiaj ntawm lawv cov hluav taws xob thiab cov hlau nplaum. Cov teb no tuaj yeem siv zog thiab txav mus rau hauv qhov system thiab, yog li, ua haujlwm rau lawv. Txawm li cas los xij, muaj zog hauv ib electromagnetic yoj nws tus kheej, txawm nws yog absorbed los tsis.

Ib tug kuj yuav nug, ua li cas koj xam lub zog ntawm hluav taws xob? Cov zog txuam nrog ib tug photon yog muab los ntawm E = h ν, qhov twg E yog tus zog (SI units ntawm J), h yog Planck qhov tas li (h = 6.626 x 1034 J s), thiab ν yog qhov zaus ntawm qhov hluav taws xob (SI units of s1 los yog Hertz, Hz) (saib daim duab hauv qab no).

Ib yam li ntawd ib tug yuav nug, dab tsi yog lub hauv paus ntawm lub zog ntawm electromagnetic tsis?

Electromagnetic tsis yog form of zog emitted los ntawm kev txav cov khoom siv hluav taws xob. Thaum zoo li no nthwv dej taug kev los ntawm qhov chaw lossis los ntawm qhov nruab nrab gravitational tsawg, lawv nyiam muaj qhov sib nqus. Raws li qhov txhais tau hais tias, kev tsim / tsim ntawm electromagnetic tsis pib los ntawm ib tug nqi particle.

Lub zog ntawm electromagnetic yoj nyob ntawm seb dab tsi?

Tau kawg tag nrho lub zog ntawm electromagnetic hluav taws xob nyob ntawm lub amplitude. Qhov tseeb qhov zog ntawm a yoj nyob ntawm lub square ntawm nws amplitude. Nws yog yooj yim to taub nyob rau hauv cov nqe lus ntawm photons. Qhov zaus qhia koj tias muaj zog npaum li cas ntawm ib qho photon.

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