Nws Puas Yuav Tsum Tau Hloov Cov looj tsom iav dub txhua ob xyoos?

Lub caij ntuj sov nyob ntawm no, thiab lub hnub ci ntsa iab. Nrog rau kev paub txog kev noj qab haus huv, ntau thiab ntau tus neeg hnav looj tsom iav dub thaum lawv tawm mus. Rau ntau, cov laj thawj ntawm kev hloov cov looj tsom iav dub feem ntau yog tias lawv tawg, ploj, lossis tsis nyiam ... Tab sis qhov tseeb, muaj lwm qhov laj thawj tseem ceeb uas feem ntau tsis saib xyuas: looj tsom iav dub tau "hnub nyoog thiab ua tsis tiav."

Tsis ntev los no, peb tau pom ntau cov lus ceeb toom rau tib neeg tias "cov looj tsom iav dub tsuas yog ob xyoos dhau los thiab yuav tsum tau hloov tom qab ntawd." Tab sis nws puas muaj tseeb tias looj tsom iav dub tsuas siv tau ob xyoos xwb?

looj tsom iav dub tiag tiag "Kev laus"

Cov khoom siv ntawm cov looj tsom iav looj tsom iav tuaj yeem nqus tau qee qhov ultraviolet (UV) rays, thiab cov txheej txheem ntawm cov lo ntsiab muag tuaj yeem cuam tshuam qee qhov UV rays. Ntau lub looj tsom iav dub kuj suav nrog UV- nqus cov ntaub ntawv rau hauv lawv lub lo ntsiab muag. Qhov no zoo thaiv feem ntau ntawm UV rays, tiv thaiv lawv los ntawm kev ua phem rau peb ob lub qhov muag.

Txawm li cas los xij, qhov kev tiv thaiv no tsis ruaj khov.

 

Vim tias ultraviolet (UV) rays nqa lub zog siab, lawv ua rau cov ntaub ntawv ntawm looj tsom iav dub kom muaj hnub nyoog, txo cov peev xwm ntawm cov khoom xyaw tshuaj pleev thaiv hnub kom nqus tau UV rays. Cov txheej ci ci ntawm cov looj tsom iav dub yog qhov tshwm sim ntawm cov hlau vapor deposition, thiab cov coatings no tuaj yeem hnav thiab oxidize, txo lawv cov kev xav. Tag nrho cov xwm txheej no txo ​​qis cov looj tsom iav dub 'UV tiv thaiv muaj peev xwm.

Tsis tas li ntawd, yog tias peb tsis saib xyuas peb cov looj tsom iav dub, peb feem ntau ua rau muaj teeb meem xws li coj lub lens ncaj qha, xoob lub tuam tsev, thiab deformation los yog puas rau cov ncej thiab lub qhov ntswg. Tag nrho cov teeb meem no cuam tshuam rau kev siv ib txwm siv thiab kev tiv thaiv ntawm cov looj tsom iav dub.

Puas yog nws tsim nyog los hloov cov looj tsom iav dub txhua ob xyoos?

Ua ntej, cia kuv qhia meej tias qhov no tsis yog lus xaiv, tab sis yog kev kawm tiag tiag.

Xib fwb Liliane Ventura thiab nws pab neeg ntawm University of São Paulo, Brazil, tau tshawb fawb ntau yam ntawm cov looj tsom iav dub, thiab hauv ib qho ntawm lawv cov ntaub ntawv, lawv tau pom zoo kom hloov looj tsom iav dub txhua ob xyoos. [1] Cov lus xaus no tau hais los ntawm ntau lub xov xwm tshaj tawm, thiab peb feem ntau pom cov ntsiab lus zoo sib xws hauv Suav niaj hnub no.

Txawm li cas los xij, qhov kev txiav txim siab no muaj lub ntsiab lus: cov kws tshawb fawb tau suav nws raws li kev ua haujlwm ntawm kev hnav looj tsom iav dub hauv Brazil ... uas yog, yog tias looj tsom iav dub hnav 2 teev hauv ib hnub, lawv cov kev tiv thaiv UV yuav txo qis tom qab ob xyoos, thiab lawv yuav tsum tau hloov.

Yuav Ua Li Cas Ua Koj Cov Khaub Ncaws Hnav Ntev Ntev

Ib nkawm looj tsom iav zoo yog feem ntau kim. Yog tias peb saib xyuas lawv zoo, peb tuaj yeem ua rau lawv tiv thaiv peb mus ntev. Tshwj xeeb, peb tsuas yog xav tau:

Khaws lawv tam sim ntawd thaum tsis siv los tiv thaiv khawb lossis tshav ntuj ncaj qha.

Rau cov neeg tsav tsheb, tsis txhob tso koj lub looj tsom iav dub rau ntawm lub dashboard kom raug tshav ntuj ncaj qha.

Thaum khaws cov looj tsom iav ib ntus, nco ntsoov khaws cov looj tsom iav kom tsis txhob khawb.

Siv lub hnab looj ntsej muag lossis lub hnab ntim khoom, vim tias cov thawv ntim tshwj xeeb no muaj cov mos mos sab hauv uas yuav tsis ua rau lub qhov muag puas.

Tsis txhob muab koj lub looj tsom iav dub rau hauv koj lub hnab ris lossis pov rau hauv koj lub hnab ev ntawv uas lawv tuaj yeem rub tawm tsam lwm yam khoom xws li cov yuam sij, hnab nyiaj, thiab xov tooj. Qhov no tuaj yeem ua rau lub lens txheej tau yooj yim puas tsuaj thiab tuaj yeem tsoo lub thav duab.

Thaum ntxuav cov looj tsom iav dub, siv cov tshuaj ntxuav tais diav, xab npum ntxuav tes, lossis lwm yam tshuaj ntxuav tes los tsim ua npuas dej thiab ntxuav cov lo ntsiab muag. Yaug kom huv si thiab txhuam kom qhuav nrog ib daim ntaub lo ntsiab muag, los yog siv cov ntaub ntub dej tshwj xeeb. Txoj kev no tsis tshua muaj peev xwm ua rau khawb ntau dua li kev so qhuav.

Hnav looj tsom iav kom raug. Tsis txhob hnav lawv siab rau ntawm koj lub taub hau, vim lawv tau yooj yim tsoo thiab tawg, thiab cov tuam tsev yuav raug puas tsuaj.

Cia li nco ntsoov cov lus qhia thaum xaiv looj tsom iav dub

Xaiv cov looj tsom iav dub zoo tsis yog qhov nyuaj. Tsuas yog nrhiav cov looj tsom iav dub nrog "UV400" lossis "UV100%" daim ntawv lo hauv cov khw muag khoom muaj koob npe. Cov ntawv sau no qhia tias cov looj tsom iav dub muaj ze li 100% tiv thaiv kab mob ultraviolet, uas yog txaus rau kev tiv thaiv.

Yog li cas koj xaiv cov xim? Feem ntau, rau kev siv txhua hnub, muab qhov tseem ceeb ntawm cov xim av lossis grey lo ntsiab muag, vim tias lawv muaj kev cuam tshuam tsawg dua ntawm cov xim ntawm cov khoom thiab yooj yim dua rau kev siv txhua hnub, tshwj xeeb tshaj yog thaum tsav tsheb, vim lawv yuav tsis cuam tshuam rau tus neeg tsav tsheb lub peev xwm pom teeb pom kev. Tsis tas li ntawd, cov neeg tsav tsheb tuaj yeem xaiv cov looj tsom iav dub nrog cov lo ntsiab muag polarized kom txo qhov ci ntsa iab thiab txhim kho kev tsav tsheb.

Ib qho yooj yim overlooked nam thaum xaiv looj tsom iav dub yog "zoo". Nws yooj yim pom tias cov looj tsom iav loj loj nrog cov duab nkhaus uas haum rau lub ntsej muag muab kev tiv thaiv hnub ci zoo tshaj plaws.

 

 

Yog tias looj tsom iav dub yog qhov tsis ncaj ncees lawm, qhov curvature tsis haum peb lub ntsej muag, lossis cov lo ntsiab muag me dhau, txawm tias cov lo ntsiab muag muaj kev tiv thaiv UV txaus, lub teeb yuav yooj yim los ntawm, txo lawv cov kev tiv thaiv lub hnub.

Peb feem ntau pom cov ntawv thov tias koj tuaj yeem txiav txim siab qhov kev ntseeg siab ntawm cov looj tsom iav dub los ntawm kev siv lub teeb pom kev nyiaj cuav thiab daim ntawv nyiaj. Qhov kev sib cav yog tias looj tsom iav dub thaiv UV rays, thiab lub teeb pom kev nyiaj cuav yuav tsis tuaj yeem teeb pom kev ruaj ntseg ntawm lawv.

Qhov kev thov no yog debatable, raws li nws nyob ntawm lub hwj chim thiab wavelength ntawm cov nyiaj cuav ntes teeb. Ntau lub teeb pom kev dag nyiaj cuav muaj lub zog qis heev thiab ruaj khov wavelengths; Qee cov tsom iav zoo tib yam tuaj yeem thaiv cov UV rays tawm los ntawm cov teeb no, tiv thaiv kev ruaj ntseg ntawm daim ntawv nyiaj los ntawm kev teeb pom kev zoo. Yog li ntawd, nws muaj kev nyab xeeb dua los siv cov cuab yeej tshaj lij los txiav txim siab qhov muaj peev xwm tiv thaiv looj tsom iav. Rau cov neeg siv khoom zoo tib yam, nws tseem ceeb tshaj plaws los nrhiav "UV400" thiab "UV100%".

Hauv kev xaus, looj tsom iav dub "tawg thiab tsis zoo," tab sis peb tsis tas yuav hloov lawv txhua ob xyoos.