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Photometry
Irradiation
radiant exposure, irradiation (radiated energy per unit of area of receiver surface)
H
e
=
W/m
2
x
W/m
2
radiant energy of solid
W =
J
x
mJ
J
kJ
MJ
GJ
TJ
area of surface of radiation detector
S
r
=
m
2
x
mm
2
cm
2
dm
2
m
2
km
2
a
ha
in
2
ft
2
yd
2
angle between direction of radiation propagation and normal to surface
α =
rad
x
μrad
mrad
rad
°
gon
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"
