Qhov twg yog qhov zoo dua 365nm lossis 395nm?

Ultraviolet (UV) lub teeb yog dav siv hauv ntau yam xws li kev lag luam, tshuaj, thiab kev tshawb fawb tshawb fawb. Thaum nws los txog rau kev xaiv lub teeb UV, tib neeg feem ntau xav tias qhov wavelength zoo dua, 365nm lossis 395nm. Cov lus teb nyob ntawm daim ntawv thov tshwj xeeb.
365nm thiab 395nm yog ob qho tib si hauv UV-A spectrum, tseem hu ua lub teeb dub, uas muaj lub wavelength ntawm 315nm thiab 400nm. Txawm li cas los xij, lawv muaj cov yam ntxwv sib txawv thiab kev siv.
365nm UV lub teeb feem ntau yog siv los kuaj xyuas cov ntawv cuav thiab cov nqi cuav, vim nws tuaj yeem ua rau cov fluorescent dyes thiab inks kom tawm lub teeb xiav ci, qhia txog kev hloov pauv lossis cov cim cuav. Nws kuj tseem siv rau hauv kev tshawb nrhiav forensic, xws li kev tsom xam qhov xwm txheej ntawm kev ua txhaum cai thiab kev kuaj pom cov zis.
Ntawm qhov tod tes, 395nm UV teeb feem ntau yog siv los kho cov nplaum nplaum, txheej, thiab cov inks uas muaj photoinitiators. Nws tuaj yeem qhib lub photoinitiator, ua rau cov tshuaj tiv thaiv polymerization thiab solidifying cov khoom. Txoj kev no yog sai dua thiab muaj zog ntau dua li cov txheej txheem ib txwm muaj.
Ntxiv mus, 395nm UV teeb kuj tseem siv rau hauv kev ua kom tsis muaj menyuam thiab tua kab mob, tshwj xeeb tshaj yog hauv tsev kho mob thiab chaw kuaj mob. Nws tuaj yeem tshem tawm cov kab mob, kab mob, thiab pwm los ntawm kev puas tsuaj rau lawv cov DNA lossis RNA, ua kom muaj kev noj qab haus huv thiab huv.
Hais txog kev nyab xeeb, 395nm UV teeb tsis tshua muaj teeb meem rau daim tawv nqaij thiab qhov muag tshaj 365nm UV teeb, uas tuaj yeem ua rau tawv nqaij kub hnyiab thiab qhov muag puas. Txawm li cas los xij, ob hom UV teeb yuav tsum tau saib xyuas, thiab hnav cov iav tiv thaiv yog tsim nyog.
Zuag qhia tag nrho, seb puas yuav xaiv 365nm lossis 395nm UV teeb nyob ntawm lub hom phiaj npaj. Yog tias lub hom phiaj yog txhawm rau txheeb xyuas cov fluorescence lossis tshawb xyuas cov khoom cuav, 365nm yog qhov kev xaiv zoo dua. Yog tias lub hom phiaj yog kho cov nplaum los yog tshuaj tua kab mob, 395nm yog qhov tsim nyog dua. Nrog txoj kev xaiv zoo, UV teeb tuaj yeem muab cov kev daws teeb meem zoo thiab muaj txiaj ntsig hauv ntau daim ntawv thov.