UV 紫外線發光素圖畫 JAPAN
圖畫塗抹了UV發光素, 在太陽光下產生特定顏色, 在室內顏色神奇地消失, 可用作演示UV紫外線強弱之用
Item no : JP 1-110-993
UV drawing material Japan
When picture is coated with such UV drawing material , it will appear colour under sunlight however colour will disappear when picture under
room light system during because of UV is less than that at sunlight.It is useful to show that sunlight contain a greater degree of UV
Item no : JP 1-110-993