As a Lighting manufacturer, especially for led outdoor lighting products, there are many uncontrollable factors that can cause problems in product quality, when problems occured, the repair cost is much higher than the product cost, how to use scientific method to check the product qualified or not, is a [...]

Heating a standard black body with full absorption and radiation capability, the color temperature are changed when the temperature gradually increases. The black body curve on the CIE color scale shows that the black body is Red - Orange red - Yellow - Yellow white - White - Blue [...]