Enter the power and radius into the calculator to determine the intensity of a wave.
The following formula is used to calculate the intensity of a wave.
I = P / (4*pi*r^2)
- Where I is the intensity (W/m^2)
- P is the power (W)
- r is the radius (m)
Intensity is defined as the power per unit area contained by a wave.
How to calculate intensity?
- First, determine the power of the wave.
For this example the power of the wave is found to be 200 W.
- Next, determine the radius of the wave.
The radius of the wave is found to be .5m.
- Finally, calculate the intensity.
Using the formula we find the intensity to be 200 / (4*pi*.5^2) = 63.66 W/m^2
In physics, intensity is use to describe the power per unit area carried by a wave.