Qhov sib txawv tseem ceeb ntawm lub dav hlau polarized lub teeb thiab lub teeb zoo tib yam yog lub dav hlau-polarized lub teeb muaj nws cov kev vibrations tshwm sim nyob rau hauv lawv nyob rau hauv ib lub dav hlau, whereas lub teeb zoo tib yam muaj kev vibrations tshwm sim nyob rau hauv lawv ntawm random ces kaum yam tsis muaj lub dav hlau.
Lub teeb yog ib hom hluav taws xob hluav taws xob hluav taws xob (EMR) muaj lub wavelength uas pom tau los ntawm tib neeg lub qhov muag. Peb tuaj yeem pom tias qhov wavelength no yog ib feem me me ntawm electromagnetic spectrum.
Plane Polarized Light yog dab tsi?
dav hlau polarized lub teeb yog ib hom EMR muaj nws cov kev vibrations tshwm sim hauv lawv hauv ib lub dav hlau. Peb tuaj yeem ua lub teeb polarized los ntawm cov txheej txheem ntawm polarization. Nws yog cov cuab yeej ntawm transverse nthwv dej uas tshwj xeeb tshaj yog geometrical orientation ntawm oscillations. Feem ntau, lub transverse nthwv dej muaj kev taw qhia ntawm oscillation perpendicular mus rau cov kev taw qhia ntawm kev txav ntawm lub nthwv dej. E.g. guitar hlua. Nyob rau hauv ib txoj hlua guitar, kev co kev taw qhia yuav txawv raws li lub plucking ntawm txoj hlua; cov kev taw qhia tuaj yeem yog ntsug, kab rov tav, lossis lwm cov ces kaum perpendicular rau txoj hlua. Tsis tas li ntawd, cov nthwv dej hla uas tuaj yeem ua rau polarization muaj xws li electromagnetic nthwv dej (xws li lub teeb thiab xov tooj cua tsis), gravitational nthwv dej, thiab transverse suab nthwv dej hauv cov khib nyiab.
Feem ntau ntawm qhov chaw ntawm lub teeb yog incoherent los yog unpolarized vim hais tias muaj ib tug random sib tov ntawm nthwv dej nrog txawv spatial yam ntxwv, zaus, theem, thiab polarization xeev. Nws yog ib qho yooj yim los txiav txim siab lub teeb lossis lwm yam EMR nthwv dej ua lub dav hlau nthwv dej kom nkag siab txog polarization ntawm EMR nthwv dej.
Daim duab 01: Vertically Polarized Lub Teeb Wave
dav hlau polarized lub teeb muaj tag nrho nws cov nthwv dej uas muaj kev taw qhia ntawm kev co. Muaj peb hom loj ntawm lub teeb polarization; linear polarization, ncig polarization thiab elliptical polarization. Linear polarization suav nrog cov hluav taws xob ntawm lub teeb txwv rau ib lub dav hlau uas qhov kev nthuav tawm tshwm sim. Nyob rau hauv cov txheej txheem polarization ncig, muaj ob txoj kab sib txuas hauv ib qho hluav taws xob ntawm lub teeb uas muaj qhov sib txuas rau ib leeg nyob rau hauv ib txoj kev uas lawv cov amplitudes sib npaug, tab sis cov theem sib txawv. Nyob rau hauv no phenomenon, propagation tshwm sim nyob rau hauv ib ncig. Thaum kawg, nyob rau hauv cov txheej txheem elliptical polarization, lub teb hluav taws xob ntawm lub teeb yog nyob rau ntawm ib qho elliptical propagation qhov twg qhov amplitude thiab theem sib txawv ntawm ob lub linear Cheebtsam yog tsis sib npaug.
Txoj kev uas peb tuaj yeem siv los ua dav hlau polarize lub teeb suav nrog polarization los ntawm kev sib kis, polarization los ntawm kev xav, polarization los ntawm tawg, thiab polarization los ntawm refraction.
Lub Teeb Tseem Ceeb yog dab tsi?
Lub teeb pom kev zoo lossis lub teeb tsis muaj polarized yog EMR qhov twg cov oscillations ntawm txhua lub teeb tsis nyob hauv ib qho kev taw qhia. Feem ntau, lub hnub ci los yog lub teeb tawm ntawm lub teeb filament yog lub teeb zoo tib yam. Cov teeb pom kev zoo no tawm lub teeb los ntawm cov txheej txheem random uas atoms hloov pauv los tsim lub teeb. Yog li ntawd, lub teeb nthwv dej los ntawm cov teeb pom kev zoo no kuj muaj lawv cov oscillations nyob rau hauv random cov lus qhia.
Peb tuaj yeem polarize lub teeb zoo tib yam los ntawm kev dhau lub teeb nthwv dej los ntawm lub lim polarization. Cov lim dej no muaj cov hlua ntev ntawm cov organic molecules uas tau teem rau hauv ib qho kev sib piv. Yog li ntawd, thaum lub teeb dhau los ntawm cov lim dej no, nws tuaj yeem nqus cov khoom ntawm cov hluav taws xob hauv lub teeb, uas yog sib npaug rau cov kev taw qhia ntawm kev teeb tsa ntawm cov organic molecules. Ib yam li ntawd, lub teeb uas tawm los ntawm lub lim polarization muaj nws cov hluav taws xob teb oscillating raws ib qho kev taw qhia, los yog yooj yim, nws yog polarized.
Dab tsi yog qhov txawv ntawm Dav Hlau Polarized Light thiab Ordinary Light?
Lub teeb yog ib hom hluav taws xob hluav taws xob hluav taws xob (EMR) muaj lub wavelength uas pom tau los ntawm tib neeg lub qhov muag. Peb tuaj yeem polarize lub teeb siv cov txheej txheem tshuaj xyuas. Qhov sib txawv tseem ceeb ntawm lub dav hlau polarized lub teeb thiab lub teeb zoo tib yam yog lub dav hlau-polarized lub teeb muaj nws cov kev vibrations tshwm sim nyob rau hauv lawv nyob rau hauv ib lub dav hlau, whereas lub teeb zoo tib yam muaj vibrations tshwm sim nyob rau hauv lawv ntawm random ces kaum yam tsis muaj lub dav hlau.
Hauv qab no yog cov npe ntawm qhov sib txawv ntawm lub dav hlau polarized lub teeb thiab lub teeb zoo tib yam hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Plane Polarized Light vs Ordinary Light
Lub teeb yog ib hom hluav taws xob hluav taws xob hluav taws xob (EMR) muaj lub wavelength uas pom tau los ntawm tib neeg lub qhov muag. Peb tuaj yeem polarize lub teeb siv cov txheej txheem tshuaj xyuas. Qhov sib txawv tseem ceeb ntawm lub dav hlau polarized lub teeb thiab lub teeb zoo tib yam yog tias lub dav hlau-polarized lub teeb muaj nws cov kev vibrations tshwm sim nyob rau hauv lawv nyob rau hauv ib lub dav hlau whereas lub teeb zoo tib yam muaj kev vibrations tshwm sim nyob rau hauv lawv ntawm random ces kaum yam tsis muaj lub dav hlau.
