Txhua tus neeg uas nyiam mus ncig ib txwm muaj ntau yam kev mus ncig "outfits", thiab lawv xav tias yooj yim thaum lawv tawm mus nrog cov khoom tiav. Ntawm txhua yam khoom siv, muaj ib yam uas txhua tus tsis tuaj yeem ua yam tsis muaj, uas yog looj tsom iav dub. Txawm koj mus qhov twg los koj yuav tsis nco qab nqa looj tsom iav dub.
Txawm hais tias nws mus ncig nrog ib pab pawg, mus ncig nrog phooj ywg, lossis taug kev los ntawm tsheb, thaum koj ntsib huab cua muaj zog thiab qhov siab ntawm ultraviolet rays, koj yuav hnav looj tsom iav dub. Ntawm qhov tod tes, nws yog siv los tiv thaiv koj ob lub qhov muag, thiab ntawm qhov tod tes, nws tseem yog kom tsis txhob muaj lub teeb ci ntsa iab thiab ua rau koj lub qhov muag pom tseeb dua.
Ntau tus neeg tsuas paub tias thaum lawv ntsib lub teeb ci ntsa iab, lawv tsuas yog yuav tsum hnav looj tsom iav dub xwb. Me ntsis lawv paub tias muaj ntau hom looj tsom iav dub, thiab txhua hom muaj cov khoom siv tes ua thiab kev ua haujlwm sib txawv. Kev hnav looj tsom iav dub sib txawv hauv qhov chaw sib txawv yog qhov tshwj xeeb. Kev hnav looj tsom iav dub tsis raug hauv qee qhov chaw tshwj xeeb yuav ua rau muaj kev phom sij rau lub neej.
Muaj ob pawg tseem ceeb ntawm looj tsom iav dub, ib qho yog "sunglasses"; Lwm qhov yog "polarized tsom iav". Lawv tag nrho cov looj tsom iav dub, qhov txawv ntawm lawv yog dab tsi?
1. looj tsom iav dub
Cov looj tsom iav dub tseem hu ua sunshades. Raws li lub npe qhia, lawv tau siv los thaiv lub hnub ci. Thaum tib neeg nyob hauv lub hnub, lawv feem ntau kho qhov loj ntawm lawv cov menyuam kawm ntawv los kho lub teeb flux. Thaum lub teeb siv ntau tshaj qhov kev hloov kho muaj peev xwm ntawm tib neeg lub qhov muag, nws yuav ua rau tib neeg lub qhov muag puas tsuaj. Tshwj xeeb tshaj yog nyob rau lub caij ntuj sov, thaum peb nyob nraum zoov, tib neeg yuav siv cov looj tsom iav dub los thaiv lub hnub kom txo qhov kev puas tsuaj rau lub qhov muag los ntawm lub teeb pom kev zoo.
Feem ntau hais lus, muaj ob hom looj tsom iav dub:
① Xim lo ntsiab muag
Cov lo ntsiab muag xim yog tsim los ntawm cov lo ntsiab muag xim, uas tseem hu ua "dyed lo ntsiab muag". Hauv kev tsim cov lo ntsiab muag, qee cov tshuaj tau ntxiv los ua kom cov lo ntsiab muag nthuav tawm ntau xim. Qhov no yog hom looj tsom iav tshaj plaws uas peb feem ntau muaj. Muaj ntau ntau xim ntawm lo ntsiab muag, xws li grey, dub, xim av, daj, tsaus ntsuab, xiav, thiab lwm yam.
② Photochromic lo ntsiab muag
Cov lo ntsiab muag ntawm photochromic lo ntsiab muag tseem hu ua "photosensitive lo ntsiab muag". Cov tshuaj Silver halide ntxiv rau cov lo ntsiab muag, uas tuaj yeem tsaus ntuj tam sim tom qab hnub ci ci rau lawv. Thaum lub hnub ci tsis muaj zog, nws rov ci dua. Yog tsis hloov lub tsom iav, kev tiv thaiv ntawm lub qhov muag yog ua tiav los ntawm nws tus kheej cov kev hloov pauv, yog li nws tsim nyog rau kev siv sab hauv tsev thiab sab nraum zoov tib lub sijhawm.
2. Polarized tsom iav
Polarized tsom iav kuj hu ua polarized tsom iav. Polarized lub teeb yog tsim los ntawm nthwv dej uas vibrate nyob rau hauv ib qho kev taw qhia. Thaum lub teeb mus txog qhov chaw, lub teeb pom kev zoo yuav polarized. Polarized lo ntsiab muag yog tsim los thaiv lub teeb no thiab tsuas yog tso cai rau polarized nthwv dej uas vibrate nyob rau hauv ib qho kev taw qhia hla. Yog li ntawd, feem ntau ntawm cov teeb pom kev zoo raug tshem tawm, thaum lub teeb pom kev zoo ntawm ib puag ncig ib puag ncig tsis txo qis.
Piv txwv li, thaum lub teeb muaj zog heev, lub glare pom thaum saib lub pas dej yog ib qho piv txwv ntawm ntuj polarization. Lub ci ntsa iab uas tshwm sim los ntawm lub pas dej cuam tshuam rau qhov pom kev, uas yog vim li cas cov khoom hauv qab lub pas dej tsis tuaj yeem pom txawm tias lub pas dej ntshiab heev. Qhov tshwm sim ntawm cov iav polarized daws qhov teeb meem ntawm lub teeb polarized. Nws tuaj yeem lim tawm qee qhov polarized reflected lub teeb thiab kho qhov teeb meem tseeb ntawm cov khoom hauv qab lub teeb.
3. Cov tsom iav polarized puas tiv thaiv cov kab hluav taws xob ultraviolet?
Yog li, cov looj tsom iav dub polarized tiv thaiv ultraviolet rays? Cov looj tsom iav dub polarized tuaj yeem tiv thaiv ultraviolet rays, tab sis lawv lub peev xwm tiv thaiv tsis muaj zog dua li cov tsom iav tshwj xeeb. Muaj qhov ntsuas ntsuas hu ua "UV index", uas yog qhov ntsuas ntawm cov nyhuv ntawm kev lim tawm cov kab hluav taws xob ultraviolet.
Qhov ntsuas UV ntawm feem ntau cov looj tsom iav dub yog nyob nruab nrab ntawm 96% thiab 98%, thaum lub iav polarized zoo tuaj yeem ncav cuag 90%. Tam sim no, cov iav polarized zoo dua muaj cov ntawv pom tseeb xws li "anti-ultraviolet" thiab "UV400". Polarized looj tsom iav dub nrog "UV400" zoo tshaj plaws ultraviolet thaiv daim ntawv lo muaj qhov zoo tshaj plaws tiv thaiv ultraviolet nyhuv.
4. Xaiv cov iav sib txawv rau qhov chaw sib txawv
① Thaum taug kev. Thaum taug kev ntawm txoj kev lossis taug kev sab nraum zoov, txhawm rau kom tsis txhob muaj kev puas tsuaj ntawm lub hnub ci ultraviolet rays rau lub qhov muag, peb tsuas yog yuav tsum hnav looj tsom iav dub zoo tib yam. Cov looj tsom iav dub tsuas yog tsim rau hnav thaum nruab hnub. Raws li lub teeb tsis muaj zog thaum yav tsaus ntuj, nws lub teeb xa hluav taws xob yuav ua rau lub qhov muag tsaus, thiab ib puag ncig thiab txoj kev tsis tuaj yeem pom meej.
Tshwj xeeb tshaj yog thaum tsav tsheb, thaum lub teeb tsis zoo, cov looj tsom iav zoo tib yam yuav ua rau lub zeem muag tsaus, uas ua rau muaj kev phom sij loj rau kev tsav tsheb. Yog li tsis txhob hnav looj tsom iav dub zoo tib yam thaum tsav tsheb.
② Thaum tsav tsheb. Thaum tsav tsheb, koj yuav tsum hnav ob lub iav polarized. Thaum lub sij hawm tsav tsheb, vim yog lub teeb pom kev los ntawm cov khoom xws li lub hnub ci, txoj kev nto, thiab iav, cov iav polarized yuav lim nws, muab peb qhov pom kev pom tseeb.
Tab sis muaj teeb meem nrog cov tsom iav polarized, uas yog, yog tias koj hnav tsom iav polarized los saib lub vijtsam tsheb lossis lub xov tooj ntawm tes, koj yuav tsis pom dab tsi meej. Yog li ntawd, thaum hnav tsom iav polarized, tsis txhob khiav lub xov tooj ntawm tes lossis lub vijtsam, thiab koj yuav tsum tau tshem cov iav thaum ua haujlwm.
Tom qab nyeem qhov no, koj muaj kev nkag siab txog cov looj tsom iav dub. Thaum peb tawm mus ua si lossis tsav tsheb, peb yuav tsum xaiv cov iav kom zoo. Rau kev noj qab haus huv thiab kev nyab xeeb ntawm koj thiab lwm tus, thov sau thiab xa mus rau cov neeg xav tau.
