Author:Makgabutlane, M; Wright, CYDate:Sep 2013Pretoria receives a fair amount of solar ultraviolet radiation (UVR). Certain meteorological factors affect the amount of solar UVR that reaches the ground. The most dominant influencing meteorological factors are stratospheric ozone, cloud ...Read more
Author:Wright, CYDate:Sep 2010The detrimental effects of excess personal solar ultraviolet radiation (UVR) exposure include wrinkles, immunosuppression and skin cancer. Approximately 1 000 South Africans die each year from melanoma skin cancer and 30% of all histologica ...Read more
Author:Wright, CYDate:01 Sep 2010On average, places in South Africa experience between 6 and 12 hours of sunshine per day. Of course, on heavily cloudy and rainy days, less sunshine reaches us, but generally we enjoy a frequent supply of blue skies and bright sun. So, what ...Read more