Kupenya kwechiedza chemugwagwa kunoreva huwandu hwemuviri hwekusimba kwe luminescence (reflection) pamusoro pemuviri unopenya (reflective body), iyo unit ndeye candela/square mita (CD...
Nekushomeka kwesimba repasi rose, marambi ezuva remumigwagwa ari kudiwa zvakanyanya nenyika dzakasiyana siyana. Kunyanya munyika dzine simba rezuva rakanaka senge Middle East, Africa, Southeast Asia...