Okokuqala landela i-litehome ukuze ufunde kabanzi ngokukhanya Candela & Lumen (CD & LM) Iyunithi yokukhanya okukhanyayo yi-Candela, esekelwe ekujuleni kokukhanya kwamakhandlela ajwayelekile, kepha manje ichazwa njengokukhanya okukhishwe yimisebe yomzimba emnyama ye-1 centimeter yokushisa kweplatinamu. Umthombo okhanyayo umfaniswano kuzo zonke izinkomba. Ukukhipha u-1 Candela wokukhanya kusho ukucisha ama-12,3 lumens, okungukuthi, kukhipha 1 lumen nge-angle eqinile. U-Lumen uyunithi lokugeleza okukhanyayo. Ukukhanyisa (Lux) Inani lokukhanya okusatshalaliswa ebusweni bokusebenza libizwa ngokuthi ukukhanyiselwa. Kuvezwe ku-lumens endaweni ngayinye yeyunithi. I-LUMEN eyodwa unyawo lwesikwele inani lokukhanyisa unyawo olubekwe phezulu ukusuka ebusweni besenzo nge-candela eyodwa. Ukukhanya kwelanga kusuka esibhakabhakeni esicacile phakathi nosuku kungama-lumens ayi-1 000 ngonyawo lwesikwele. Etafuleni lokudlela elikhanyiswe kahle, licishe libe ngama-20 lumens ngonyawo lwesikwele. Iyunithi le-metric elihambisanayo liyi-Lux, okuyi-1 LUMEN imitha ngayinye. I-1 lumen ngonyawo lwesikwele ilingana ne-10.76 lux noma isondele ku-10 lux. E-United States, kusetshenziswa i-Footcandles esikhundleni se-US LUMENS ngandlela thile imitha yesikwele, kanti i-UK isebenzisa owokugcina ukuze ifane. ILux isetshenziswa emazweni aseYurophu. Ukubonisisa coeffleeffice Lapho ukukhanya kuwa ngaphezulu, kuboniswa ngokuya ngezakhiwo zobuso. Le mpahla ibizwa ngokuthi yi-Surface Conventance. Umkhunjuz
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