UVB rays, uas cuam tshuam rau ntawm daim tawv nqaij txheej saum toj kawg nkaus, ua rau mob qog noj ntshav thiab feem ntau sunburns. Txawm hais tias UVA thiab UVB rays ua rau muaj kev pheej hmoo loj tshaj plaws rau lub hnub puas tsuaj, cov neeg uas ua haujlwm nrog vuam torches lossis mercury teeb yuav raug rau UVC rays, hom kev phom sij tshaj plaws ntawm UV hluav taws xob.
Yuav ua li cas ua phem rau UVA lossis UVB?
UVA rays tuaj yeem nkag mus rau koj cov tawv nqaij ntau dua thiab ua rau koj cov tawv nqaij ua kom muaj hnub nyoog ntxov. … Lwm 5 feem pua ntawm UV rays yog UVBLawv muaj lub zog ntau dua li UVA rays, thiab feem ntau ua rau cov khaubncaws sab nraud povtseg ntawm koj cov tawv nqaij, ua rau tshav ntuj. Cov kab hluav taws xob ncaj qha ua rau DNA puas tsuaj thiab yog qhov ua rau mob qog noj ntshav feem ntau.
Lub teeb UV twg yog qhov txaus ntshai tshaj plaws rau tib neeg?
Short-wavelength UVC yog hom kev puas tsuaj tshaj plaws ntawm UV hluav taws xob. Txawm li cas los xij, nws tau lim tag nrho los ntawm huab cua thiab tsis ncav cuag lub ntiaj teb saum npoo. Qhov nruab nrab-yoj UVB yog qhov ua haujlwm lom neeg heev tab sis tsis tuaj yeem nkag mus dhau ntawm cov txheej txheem ntawm daim tawv nqaij.
YPuas UV A thiab B teeb teeb meem?
Yog li ntawd, nws tsis muaj kev hem thawj rau tib neeg, tsiaj lossis tsob nroj txoj sia hauv ntiaj teb. Ultraviolet A thiab B, ntawm qhov tod tes, tuaj yeem nkag mus rau txheej txheej ozone kom ncav cuag lub ntiaj teb. Suntans, freckling thiab sunburns yog paub los ntawm over-exposed rau ultraviolet rays, nrog rau cov kev pheej hmoo ntawm daim tawv nqaij mob cancer ntau dua 1
Vim li cas UVC txaus ntshai tshaj plaws?
Ntawm ib sab, UVC yog qhov txaus ntshai tshaj plaws vim nws yog lub zog siab tshaj plaws ntawm UV spectrum… huab cua. Uas tau hais tias, nws tseem yog qhov luv tshaj wavelength thiab tsis xav tias yuav ua rau muaj kev puas tsuaj mus ntev li UVB los ntawm lub hnub.
