Isingeniso kuma-spectra avamile
1. Ukukhanya kwe-RGB: Kalula nje, ukukhanya kwemvelo okubonwa yiwo wonke umuntu empilweni yethu yansuku zonke. I-R/G/B imele imibala emithathu eyinhloko yokukhanya okubonakalayo: obomvu/oluhlaza/oluhlaza okwesibhakabhaka. Ukukhanya okungabonwa yiwo wonke umuntu kwakhiwe yilezi zibani ezintathu. Zixubene, izithombe ezithathwe kule modi yomthombo wokukhanya azihlukile kulezo ezithathwe ngqo ngocingo noma ngekhamera.
2. Ukukhanya okuhlanganisiwe kanye nokukhanya okuhlanganisiwe
Ukuze siqonde indima yokukhanya okuhlanganisiwe ekutholeni isikhumba, sidinga kuqala ukuqonda izici zokukhanya okuhlanganisiwe: imithombo yokukhanya okuhlanganisiwe ingaqinisa ukubonakaliswa kwe-specular futhi yenze buthaka ukubonakaliswa kwe-diffuse; ukukhanya okuhlanganisiwe kungagqamisa ukubonakaliswa kwe-diffuse futhi kuqede ukubonakaliswa kwe-specular. Ebusweni besikhumba, umphumela wokubonakaliswa kwe-specular ubonakala kakhulu ngenxa yamafutha angaphezulu, ngakho-ke kwimodi yokukhanya okuhlanganisiwe, kulula ukubona izinkinga zobuso besikhumba ngaphandle kokuphazamiseka ukukhanya okujulile kwe-diffuse. Kwimodi yokukhanya okuhlanganisiwe, ukuphazamiseka kokukhanya kwe-specular ebusweni besikhumba kungahlungwa ngokuphelele, futhi ukukhanya kwe-diffuse ezingxenyeni ezijulile zesikhumba kungabonakala.
3. Ukukhanya kwe-UV
Ukukhanya kwe-UV kuyisifinyezo sokukhanya kwe-Ultraviolet. Kuyingxenye engabonakali yobude be-wavelength obungaphansi kokukhanya okubonakalayo. Ububanzi be-wavelength bomthombo wokukhanya kwe-ultraviolet osetshenziswa yi-detector buphakathi kuka-280nm-400nm, okuhambisana ne-UVA evame ukuzwakala (315nm-280nm) kanye ne-UVB (315nm-400nm). Imisebe ye-ultraviolet equkethwe emithonjeni yokukhanya abantu abavezwa kuyo nsuku zonke ikulolu bubanzi be-wavelength, futhi umonakalo we-photoaging yesikhumba nsuku zonke ubangelwa kakhulu imisebe ye-ultraviolet yalolu bude be-wavelength. Yingakho futhi ama-detector esikhumba angaphezu kuka-90% (mhlawumbe ayi-100% empeleni) angaphezu kuka-100% emakethe enemodi yokukhanya kwe-UV.
Izinkinga zesikhumba ezingabonakala ngaphansi kwemithombo yokukhanya ehlukene
1. Imephu yomthombo wokukhanya we-RGB: Iveza izinkinga ezingabonwa yiso lomuntu elivamile. Ngokuvamile, ayisetshenziswa njengemephu yokuhlaziya ukujula. Isetshenziswa kakhulu ekuhlaziyeni nasekubhekiseleni izinkinga kwezinye izindlela zomthombo wokukhanya. Noma kule modi, gxila ekutholeni izinkinga ezibonakaliswa yisikhumba, bese ubheka izimbangela eziyisisekelo zezinkinga ezifanayo ezithombeni kumodi yokukhanya okuphambene kanye nokukhanya kwe-UV ngokuya ngohlu lwezinkinga.
2. Ukukhanya okuhlanganisiwe okuhlanganisiwe: okusetshenziselwa kakhulu ukubona imigqa emincane, ama-pores namabala ebusweni besikhumba.
3. Ukukhanya okuphambene: Bheka ukuzwela, ukuvuvukala, ukubomvu kanye nemibala engaphezulu ngaphansi kobuso besikhumba, okuhlanganisa amamaki ezinduna, amabala, ukushiswa yilanga, njll.
4. Ukukhanya kwe-UV: ikakhulukazi qaphela izinduna, amabala ajulile, izinsalela ze-fluorescent, ama-hormone, i-deep dermatitis, futhi qaphela ukuhlangana kwe-Propionibacterium ngokucacile ngaphansi kwemodi yomthombo wokukhanya we-UVB (ukukhanya kukaWu).
Imibuzo Evame Ukubuzwa
U: Ukukhanya kwe-ultraviolet kuwukukhanya okungabonakali emehlweni omuntu. Kungani izinkinga zesikhumba ngaphansi kokukhanya kwe-ultraviolet zingabonakala ngaphansiisihlaziyi sesikhumba?
A: Okokuqala, ngoba ubude besikhathi obukhanyayo bento bubude kune-wavelength yokumunca, ngemva kokuba isikhumba simunca ukukhanya kwe-ultraviolet okufushane bese kukhombisa ukukhanya okuphumayo, ingxenye yokukhanya eboniswa ubuso besikhumba inobude besikhathi obude futhi isibe ukukhanya okubonakalayo esweni lomuntu; okwesibili imisebe ye-Ultraviolet nayo ingamagagasi kagesi futhi inokuguquguquka, ngakho-ke lapho ubude besikhathi besikhathi bento buhambisana nobude besikhathi bemisebe ye-ultraviolet ekhanyiswe ebusweni bayo, kuzovela i-harmonic resonance, okuholela emthonjeni omusha wokukhanya kwe-wavelength. Uma lo mthombo wokukhanya ubonakala esweni lomuntu, uzobanjwa yi-detector. Icala elilula ukuliqonda ukuthi ezinye izinto ezimonyweni azikwazi ukubonwa iso lomuntu, kodwa ziyakhanya uma zivezwa ekukhanyeni kwe-ultraviolet.
Isikhathi sokuthunyelwe: Jan-19-2022
