Do you know about luminance and duration characteristics of glow in dark powder
About the brightness of luminous powder in the new customers often have doubts, clearly said that the manufacturer can be bright for 10 hours how to see half an hour, causing some unnecessary misunderstanding. The luminance of luminescent materials is usually measured in units of CD /m2(candela per square meter), while noctilucent powders are usually measured in units of MCD /m2(Millicandela per square meter). The midday sun reaches 10,000 to 100,000 CDS /m2, In the daytime, there are only 1000 ~ 5000cd/m2...