Kuyambira kalekale, mankhwala a kuwala akhala akudziwika ndikugwiritsidwa ntchito pochiritsa.Anthu akale a ku Iguputo ankamanga nyumba za dzuwa zokhala ndi magalasi amitundu yosiyanasiyana kuti azitha kuchiza matenda.Anali Aigupto amene poyamba anazindikira kuti ngati mupaka galasi lopaka utoto lidzasefa mafunde ena onse a kuwala kowonekera ndikukupatsani mawonekedwe oyera a kuwala kofiira, komwe kumakhala600-700 nanometer wavelength radiation.Kugwiritsiridwa ntchito koyambirira kwa Agiriki ndi Aroma kunagogomezera zotsatira za kutentha kwa kuwala.
Mu 1903, Neils Ryberg Finsen adalandira Mphotho ya Nobel muzamankhwala chifukwa chogwiritsa ntchito bwino kuwala kwa ultraviolet kuchiza anthu odwala chifuwa chachikulu.Masiku ano Finsen amadziwika kuti ndi bambo waphototherapy yamakono.
Ndikufuna kukuwonetsani kabuku komwe ndapeza.Zinachokera kumayambiriro kwa zaka za m'ma 1900 ndipo kutsogolo kwake kumalembedwa kuti 'Sangalalani ndi dzuwa m'nyumba ndi dzuwa lanyumba.'Ndi chinthu chopangidwa ku Britain chotchedwa Vi-Tan ultraviolet home unit ndipo kwenikweni ndi bokosi losambira la ultraviolet incandescent.Ili ndi nyali yoyaka, nyali ya mercury vapor, yomwe imatulutsa kuwala mu ultraviolet spectrum, yomwe ingapereke vitamini D.
Nthawi yotumiza: Nov-03-2022