Kusukela ekuqaleni kwesikhathi, izici zokwelapha zokukhanya ziye zabonwa futhi zasetshenziselwa ukwelapha.Abantu baseGibhithe lasendulo bakha ama-solarium afakwe ingilazi enemibala ukuze ahlanganise imibala ethile ye-spectrum ebonakalayo ukuze elapha izifo.NgabaseGibhithe abaqale baqaphela ukuthi uma ufaka umbala ingilazi izohlunga wonke amanye amaza okukhanya okubonakalayo futhi ikunikeze uhlobo olumsulwa lokukhanya okubomvu, okuyiwo.600-700 nanometer wavelength imisebe.Ukusetshenziswa kwasekuqaleni kwamaGreki namaRoma kwagcizelela imiphumela yokushisa yokukhanya.
Ngo-1903, u-Neils Ryberg Finsen waklonyeliswa ngendondo ye-Nobel kwezokwelapha ngokusebenzisa ngempumelelo ukukhanya kwe-ultraviolet ukwelapha ngempumelelo abantu abanesifo sofuba.Namuhla uFinsen waziwa njengoyise wephototherapy yesimanje.
Ngifuna ukukubonisa incwajana engiyitholile.Isuka ekuqaleni kwawo-1900 futhi ngaphambili ifundeka kanje 'Jabulela ilanga endlini nelanga lasekhaya.'Kungumkhiqizo owenziwe eBrithani obizwa ngokuthi iyunithi yasekhaya ye-Vi-Tan ultraviolet futhi empeleni iyibhokisi lokugeza elikhanyayo le-ultraviolet incandescent.Inesibani se-incandescent, isibani se-mercury vapor, esikhipha ukukhanya ku-ultraviolet spectrum, okuzohlinzeka ngovithamini D.
Isikhathi sokuthumela: Nov-03-2022