Dab tsi yog qhov loj wavelength ranges siv rau tej thaj chaw deb sensing?
Dab tsi yog qhov loj wavelength ranges siv rau tej thaj chaw deb sensing?

Video: Dab tsi yog qhov loj wavelength ranges siv rau tej thaj chaw deb sensing?

Video: Dab tsi yog qhov loj wavelength ranges siv rau tej thaj chaw deb sensing?
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Anonim

Kho qhov muag kev paub txog tej thaj chaw deb cov cuab yeej ua haujlwm nyob rau hauv qhov pom, ze infrared, nruab nrab infrared thiab luv yoj infrared feem ntawm cov electromagnetic spectrum. Cov cuab yeej no yog rhiab heev rau cov wavelengths 300nm mus rau 3000nm.

Ntawm no, wavelength nyob rau hauv tej thaj chaw deb sensing yog dab tsi?

Cov duab yog ntes tau siv cov active sensors lossis passive sensors. Cov sensors no sau cov wavelengths ntawm pom lub teeb uas yog emitted los ntawm lawv qhov taw tes ntawm kev tsom xam. A wavelength hais txog qhov uas lub teeb ntsuas. Ib wavelength hais txog qhov kev ncua deb ntawm ob lub yoj troughs los yog crests.

Ib yam li ntawd, cov electromagnetic spectrum cuam tshuam li cas rau cov chaw taws teeb sensing? Cov electromagnetic spectrum Qhov sib txawv ntawm qhov luv wavelengths (xws li gamma thiab x-rays) mus rau lub wavelengths ntev (xws li microwaves thiab tshaj tawm xov tooj cua nthwv dej ). Rau feem ntau cov hom phiaj, cov ultraviolet los yog UV feem ntawm lub spectrum muaj qhov luv tshaj wavelengths uas siv tau rau kev paub txog tej thaj chaw deb.

Xav txog qhov no, dab tsi yog qhov wavelength range?

Electromagnetic tsis muaj categorized raws li lawv zaus f los yog sib npaug, raws li lawv wavelength λ = c/f. Pom lub teeb muaj ib wavelength ntau yam los ntawm ~ 400 nm mus rau ~ 700 nm. Electromagnetic nthwv dej nrog luv luv wavelengths thiab ntau zaus muaj xws li lub teeb ultraviolet, X-rays, thiab gamma rays.

Lub hom phiaj nyob rau hauv tej thaj chaw deb yog dab tsi?

Absorption (A) tshwm sim thaum hluav taws xob (zog) absorbed rau hauv lub phiaj thaum kis tau tus mob (T) tshwm sim thaum hluav taws xob hla dhau a phiaj . Reflection (R) tshwm sim thaum hluav taws xob "bounces" tawm ntawm phiaj thiab yog redirected. Hauv kev paub txog tej thaj chaw deb , peb txaus siab rau kev ntsuas cov hluav taws xob cuam tshuam los ntawm hom phiaj.

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