Wave Intensity Flashcards
1
Q
The formula for finding the wave intensity using power and area
A
I = (energy/time)/area
2
Q
The SI unit of measurement for intensity
A
Watts per meter squared, W/m^2
3
Q
What does
I ∝ A^2
mean?
A
if the amplitude of a wave is doubled, then the intensity will increase by four times.
4
Q
what is a 3d wave that is present in isotropic mediums?
A
spherical wave
5
Q
a word that means “same allthroughout”
A
isotropic
6
Q
formula of the surface area of a sphere
A
4pir^2
7
Q
The formula for finding the wave intensity of a spherical wave
A
I = power/area = (energy/time)/(4pir^2)
8
Q
the ratio of two spherical wave intensities as related to the ratio of the radii
A
(I_2/I_1 = r_1^2/r_2^2)
