The Student Room Group

Light intensity

Can someone help me out here? For some reason, I just cant wrap my head around the light intensity when only an area of a surface and wattage of the source is given. Can someone explain the formula for this?
Original post by Amexmac1
Can someone help me out here? For some reason, I just cant wrap my head around the light intensity when only an area of a surface and wattage of the source is given. Can someone explain the formula for this?

Intensity = Power(of the source) / Area (that the light shine on)
yeah its just watts per metre^2

Quick Reply

Latest