A cikin al'ummar wannan zamani, gurɓataccen iska yana ƙara tsananta, sararin samaniyar ozone ya lalace kadan, kuma gilashin suna fuskantar hasken ultraviolet na rana.Zane-zane na Photochromic su ne ƙananan hatsi na halide na azurfa da jan karfe oxide a cikin ruwan tabarau wanda ya ƙunshi abubuwan canza launi.Lokacin da haske mai ƙarfi ya haskaka shi, halide na azurfa yana raguwa zuwa azurfa da bromine, kuma ƙananan ƙananan hatsi na azurfa da aka lalata suna sa ruwan tabarau ya zama launin ruwan kasa;lokacin da haske ya yi duhu, azurfa da halide suna sake haifar da halide na azurfa a ƙarƙashin catalysis na jan karfe oxide., don haka launi na ruwan tabarau ya sake yin haske.
Na biyu, canjin launi na fim mai canza launi
1. Lokacin da rana ta yi: da safe, gizagizai na iska suna da bakin ciki, hasken ultraviolet ba su da yawa, kuma suna isa ƙasa, don haka zurfin ruwan tabarau masu canza launi da safe kuma ya fi zurfi.Da yamma, hasken ultraviolet yana da rauni sosai, saboda rana tana da nisa daga ƙasa da yamma, kuma yawancin hasken ultraviolet yana toshewa ta hanyar tarin hazo da rana;don haka zurfin canza launin yana da zurfi sosai a wannan lokacin.
2. Lokacin da gajimare: hasken ultraviolet wani lokaci ba su da rauni kuma suna iya isa ƙasa, don haka ruwan tabarau masu canza launi na iya canza launi.Kusan babu canza launi kuma a cikin gida mai haske sosai, ruwan tabarau masu canza launi na iya samar da tabarau mafi dacewa don UV da kariya mai haske a kowane yanayi, daidaita launi na ruwan tabarau a cikin lokaci bisa ga haske, kuma suna ba da kariya ga lafiyar idanu kowane lokaci. a ko'ina yayin kare hangen nesa.
3. Alakar da ke tsakanin ruwan tabarau masu canza launi da zafin jiki: A karkashin yanayi guda, yayin da zafin jiki ya karu, launin ruwan tabarau masu canza launi za su yi sauƙi a hankali yayin da zafin jiki ya karu;akasin haka, lokacin da zafin jiki ya ragu, ruwan tabarau masu canza launi za su ragu.A hankali a zurfafa.Shi ya sa yakan zama haske a lokacin rani kuma ya fi duhu a lokacin hunturu.
4. Saurin canjin launi, zurfin kuma yana da alaƙa da kauri na ruwan tabarau
Lokacin aikawa: Nuwamba-05-2022