Tag nrho cov ntaub thaiv npog tiv thaiv hluav taws xob hluav taws xob hauv thaj chaw ze
Qhov tshwm sim ntawm hluav taws xob hluav taws xob yog hais txog kev puas tsuaj ntawm hluav taws xob hluav taws xob hluav taws xob uas tsim los ntawm cov khoom siv hluav taws xob xa mus rau tib neeg lub cev thiab cuam tshuam nrog kev ua haujlwm ntawm cov khoom siv hluav taws xob. Ntuj electromagnetic hluav taws xob los ntawm lub ntiaj teb thermal hluav taws xob, hnub ci thermal hluav taws xob, cosmic rays, thiab hluav taws xob zoo li qub; Cov hluav taws xob hluav taws xob hluav taws xob yog los ntawm ntau qhov chaw, suav nrog cov kab hluav taws xob siab, cov chaw nres tsheb, xov tooj cua, cov cuab yeej hluav taws xob, cov khoom siv kho mob, cov khoom siv laser, thiab cov khoom siv hauv chaw ua haujlwm. Nws kuj tuaj yeem yog los ntawm kev siv cov khoom siv hauv tsev xws li microwaves, TV, xov tooj ntawm tes, cua txias, pam hluav taws xob, thiab xov tooj cua.
Cov hluav taws xob hluav taws xob hluav taws xob feem ntau muab faib ua thaj chaw ze thiab thaj chaw deb. Lub cheeb tsam nyob rau hauv ib tug wavelength ntau yam nyob rau hauv lub teb qhov chaw yog feem ntau hu ua lub ze-tej; Ntawm qhov tsis sib xws, nyob rau hauv cheeb tsam tshaj li ib lub wavelength ntau, nws yog feem ntau hu ua qhov deb. Ob hom kev ua teb muaj cov yam ntxwv sib txawv: nyob rau hauv thaj tsam ze, tsis muaj qhov sib txawv ntawm qhov sib txawv ntawm lub zog ntawm lub teb hluav taws xob thiab lub zog ntawm cov hlau nplaum. Feem ntau, rau cov khoom siv hluav taws xob uas muaj qhov hluav taws xob siab thiab tsis tshua muaj tam sim no, xws li xa cov kav hlau txais xov thiab cov khoom noj khoom haus, cov hluav taws xob hluav taws xob muaj zog ntau dua li qhov sib nqus; Rau thaj chaw uas muaj qhov tsis tshua muaj hluav taws xob thiab siab tam sim no, xws li qee cov khoom siv cua sov induction, qhov chaw sib nqus yog qhov loj dua qhov hluav taws xob. Nyob rau hauv qhov deb, tag nrho cov hluav taws xob hluav taws xob yog qhov tseem ceeb ntawm hluav taws xob thiab nthuav tawm hauv daim ntawv ntawm cov hluav taws xob hluav taws xob, thiab qhov txo qis ntawm cov hluav taws xob siv hluav taws xob hauv daim teb no qeeb qeeb dua hauv qhov induced teb. Nyob rau hauv qhov chaw deb, muaj kev sib raug zoo ntawm lub teb hluav taws xob thiab lub zog hlau nplaum raws li hauv qab no: E=377H, cov kev taw qhia ntawm kev khiav hauj lwm ntawm hluav taws xob thiab magnetic teb yog perpendicular rau ib leeg, thiab ob qho tib si yog perpendicular mus rau cov kev taw qhia ntawm propagation ntawm electromagnetic tsis. Qhov chaw deb yog qhov chaw tsis muaj zog, thiab nws qhov kev siv hluav taws xob electromagnetic yog me me.
Kev siv hluav taws xob hluav taws xob hauv thaj chaw ze yog ntau dua li qhov nyob deb, thiab qhov cuam tshuam thiab kev puas tsuaj ntawm hluav taws xob hluav taws xob ntawm tib neeg lub cev feem ntau yog nyob ze ntawm thaj chaw. Tsab ntawv xov xwm no npaj siab muab qee cov tswv yim thiab kev coj ua rau tag nrho kev tiv thaiv kev tiv thaiv hluav taws xob hluav taws xob tiv thaiv hluav taws xob hauv thaj tsam ze. Siab rhiab heev: Lub tshuab hluav taws xob hluav taws xob hluav taws xob tuaj yeem ntes thiab ntsuas cov hluav taws xob hluav taws xob tsis muaj zog, thiab tuaj yeem ntes cov hluav taws xob nyob deb ntawm tib neeg lub qhov muag.
