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Calculate too:
Free fall
Photometry
Radiance
B
_{e}
W/(sr·m
^{2}
)
x
W/(sr·m
^{2}
)
Φ
_{e}
W
x
W
Ω
sr
x
sr
□°
S
_{em}
m
^{2}
x
mm
^{2}
cm
^{2}
dm
^{2}
m
^{2}
km
^{2}
a
ha
in
^{2}
ft
^{2}
yd
^{2}
α
rad
x
μrad
mrad
rad
°
gon
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"
variables:
B
_{e}
- radiance
Φ
_{e}
- radiation (or absorption) power, radiant flux
Ω
- solid angle
S
_{em}
- area of surface of emitting source
α
- angle between direction of radiation propagation and normal to surface