Point Source Intensity
I = P/(4·π·r^2)
What it says
The intensity of radiation from an isotropic point source falls off as the inverse square of the distance from the source.
Symbols
| Symbol | Quantity | Dimension |
|---|---|---|
I | Intensity (W/m^2) | M T^-3 |
P | Power (W) | M L^2 T^-3 |
r | Distance (m) | L |
Work it out
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Connects to
Filed under Waves · derive through it in the explorer