Video: Dab tsi yog qhov kev siv ntawm lub teeb kis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib nrab polarized thiab ib nrab unpolarized teeb . Raws li lub polarizer yog tig clockwise, lub kev siv ntawm lub teeb kis muaj qhov tsawg kawg nkaus tus nqi ntawm 2.0 W / m2 thaum θ = 20.0o thiab muaj qhov siab tshaj plaws ntawm 8.0 W / m2 thaum lub kaum sab xis yog θ = θmax.
Ntawm no, qhov kev siv ntawm lub teeb yog dab tsi thaum nws dhau los ntawm polarizer?
Cov kev siv zog Kuv ntawm polarized teeb tom qab hla dhau polarizing filter yog I = I0 cos2 θ, kuv0 yog tus thawj kev siv zog thiab θ yog lub kaum sab xis ntawm cov kev taw qhia ntawm polarization thiab axis ntawm lub lim. Polarization kuj yog tsim los ntawm kev xav.
Qhov thib ob, yuav ua li cas thaum lub teeb yog polarized? A teeb nthwv dej uas vibrating hauv ntau tshaj ib lub dav hlau yog hu ua unpolarized teeb . Polarized lub teeb vuag yog teeb nthwv dej uas qhov kev vibrations tshwm sim hauv ib lub dav hlau. Cov txheej txheem ntawm transforming unpolarized teeb rau hauv polarized teeb yog lub npe hu ua polarization.
Tsuas yog li ntawd, koj yuav suav li cas siv lub teeb?
Thaum polarized teeb ntawm kev siv zog Kuv0 yog xwm txheej ntawm ib tug polarizer, lub kis mob hnyav yog muab los ntawm kuv = I0cos2θ, qhov twg θ yog lub kaum sab xis ntawm qhov kev taw qhia polarization ntawm qhov xwm txheej teeb thiab axis ntawm lub lim. Rau qhov thib ob polarizer θ = 30o. Rau qhov thib peb polarizer θ = 90o - 30o = 60o.
Koj txiav txim siab polarization li cas?
Saib los ntawm ib tug linear polarizer ntawm cov dej milky uas koj ci lub teeb. Tig lub polarizer thiab nrhiav cov kev taw qhia ntawm polarization . Muab ib lub polarizer linear nruab nrab ntawm lub teeb thiab dej thiab tig nws. Yog li koj tuaj yeem txheeb xyuas qhov twg polarization kev taw qhia yog lub luag haujlwm rau lub teeb tawg.
Pom zoo:
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