2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
UV raug ua rau muaj kev pheej hmoo muaj peev xwm ua rau qhov muag tsis pom kab mob, yog tsis siv qhov muag tiv thaiv. Kev raug UV hluav taws xob ntau dhau tuaj yeem ua rau muaj teeb meem kev noj qab haus huv, suav nrog mob qog noj ntshav. Mob qog noj ntshav yog mob qog noj ntshav ntau tshaj plaws hauv Tebchaws Meskas.
Yuav hluav taws xob ntau npaum li cas?
Cov tawv nqaij ntawm cov neeg uas nkag siab rau lub teeb tsis tuaj yeem tiv thaiv nws tus kheej los ntawm UV hluav taws xob ntev. Hauv cov neeg tawv nqaij ncaj ncees, UV hluav taws xob pib ua teeb meem tom qab li 5 mus rau 10 feeb.
Kev phom sij ntawm kev siv hluav taws xob ultraviolet yog dab tsi?
Kev Noj Qab Haus Huv ntawm UV Radiation
- mob qog nqaij hlav tawv nqaij (melanoma thiab nonmelanoma)
- kev laus ntxov ntxov thiab lwm yam kev puas tsuaj ntawm daim tawv nqaij.
- Cataracts thiab lwm yam qhov muag puas.
- Immune system suppression.
Puas yog UV hluav taws xob zoo lossis phem?
Kev raug UV hluav taws xob ntau dhau cuam tshuam rau koj cov tawv nqaij, koj ob lub qhov muag thiab tej zaum koj lub cev tiv thaiv kab mob. Ntau tus neeg tsis nco qab tias qhov cuam tshuam ntawm kev raug UV hluav taws xob sib sau ua ke hauv lub neej. Koj tus cwj pwm raug tshav ntuj tam sim no txiav txim siab koj txoj hauv kev tsim mob qog noj ntshav lossis mob cataracts tom qab lub neej!
Vim li cas hluav taws xob ultraviolet txaus ntshai rau lub neej hauv ntiaj teb?
Zoo zoo, lub ntiaj teb huab cua tiv thaiv peb ntawm feem ntau ntawm UV hluav taws xob. … Cov huab cua me ntsis los tiv thaiv cov rays-feem ntau UVA hluav taws xob mus txog lub ntiaj teb nto. UVA rays ua rau tawv nqaij laus thiab qhov muag puas, thiab tuaj yeem txo kojlub cev muaj peev xwm tiv thaiv kab mob. UVA rays kuj ua rau muaj kev pheej hmoo ntawm mob qog noj ntshav.
Pom zoo:
Puas yog kev siv hluav taws xob siv hluav taws xob?
Usability engineering yog kev qhuab qhia uas tsom mus rau kev txhim kho kev siv tau ntawm kev sib tham sib. Nws rub tawm cov kev xav los ntawm kev tshawb fawb hauv computer thiab kev puas siab puas ntsws los txhais cov teeb meem uas tshwm sim thaum siv cov kab ke.
Puas yog lub tshuab hluav taws xob nyob ruaj khov tsim hluav taws xob nthwv dej?
Tsis yog ib qho hluav taws xob nyob ruaj ruaj lossis cov hlau nplaum nyob ruaj ruaj yuav tsim thiab EM yoj. Lawv yuav tsum txav los tsim nthwv dej. Puas electrons tsim hluav taws xob nthwv dej? Electromagnetic nthwv dej yog tsim los ntawm kev txav electrons.
Puas hluav taws xob hluav taws xob puas tsim hluav taws xob?
Coal feem ntau siv roj los tsim hluav taws xobhauv Tebchaws Meskas. Hauv cov chaw tsim hluav taws xob hluav taws xob hluav taws xob, cov hluav taws xob bituminous, subbituminous thee, lossis lignite raug hlawv. Cov cua kub uas tsim los ntawm kev sib xyaw ntawm cov thee yog siv los hloov cov dej mus rau hauv qhov chaw siab zog, uas tsav lub turbine, uas tsim hluav taws xob.
Lub tshuab hluav taws xob hluav taws xob tsim hluav taws xob li cas?
Piav seb lub twj hluav taws xob hluav taws xob tsim hluav taws xob hla lub membrane li cas. Los ntawm pum electrons hla lub membrane, sab uas cov electrons raug tshem tawm muaj qhov zoo dua, thaum sab tau txais cov hluav taws xob ntau muaj qhov tsis zoo.
Puas yog lub hnub ci siv hluav taws xob tsim hluav taws xob?
Lub hnub ci siv hluav taws xob puas tuaj yeem tsim hluav taws xob thaum hla lub ntiaj teb tus duab ntxoov ntxoo? Los ntawm lub ntiaj teb tus duab ntxoov ntxoo penumbral? Teb: No, vim nyob rau hauv umbra tsis muaj lub hnub ci hluav taws xob ncaj qha tshwj tsis yog lub hli pom.
