How can I calculate the UV dose, in J/m2?

Hello I used three UV lamps each at a time: UV A light source (365nm, 8 watts) Aimed at a surface 5 cm away for 7 Days UV B light source (302nm, 8 watts)Aimed at a surface 5 cm away for 7 Days UV...

01 July 2015 3,534 48 View