Prism-Siv los faib lossis faib cov kab teeb ci.
Product Description
Lub prism yog polyhedron ua los ntawm cov ntaub ntawv pob tshab (xws li iav, siv lead ua, thiab lwm yam). Nws yog dav siv hauv cov cuab yeej kho qhov muag. Prisms tuaj yeem muab faib ua ntau hom raws li lawv cov khoom thiab kev siv. Piv txwv li, nyob rau hauv spectroscopic instruments, lub "dispersion prism" uas decomposes composite teeb rau hauv spectra feem ntau yog siv raws li ib tug equilateral prism; nyob rau hauv cov cuab yeej xws li periscopes thiab binocular telescopes, hloov cov kev taw qhia ntawm lub teeb los kho nws txoj hauj lwm imaging yog hu ua "tag nrho prism". "Reflecting prisms" feem ntau siv lub kaum sab xis prisms.
Sab ntawm lub prism: lub dav hlau uas lub teeb nkag mus thiab tawm yog hu ua sab.
Lub ntsiab seem ntawm lub prism: lub dav hlau perpendicular mus rau sab yog hu ua lub ntsiab seem. Raws li cov duab ntawm lub ntsiab seem, nws tuaj yeem muab faib ua daim duab peb sab prisms, lub kaum sab xis prisms, thiab pentagonal prisms. Cov seem tseem ceeb ntawm prism yog daim duab peb sab. Lub prism muaj ob qhov chaw refracting, lub kaum sab xis ntawm lawv yog hu ua apex, thiab lub dav hlau rov qab lub apex yog hauv qab.
Raws li txoj cai ntawm refraction, lub teeb ci dhau los ntawm prism thiab deflected ob zaug ntawm qhov chaw hauv qab. Lub kaum sab xis q nruab nrab ntawm qhov hluav taws xob tawm thiab qhov teeb meem hluav taws xob yog hu ua lub kaum sab xis deflection. Nws qhov loj me yog txiav txim siab los ntawm qhov refractive index n ntawm qhov nruab nrab prism thiab qhov xwm txheej kaum i. Thaum kuv kho, qhov sib txawv wavelengths ntawm lub teeb muaj qhov sib txawv deflection kaum. Nyob rau hauv pom lub teeb, lub deflection lub kaum sab xis yog qhov loj tshaj plaws rau lub teeb violet, thiab qhov tsawg tshaj plaws yog rau lub teeb liab.
