1: Equations Flashcards
1
Q
Intensity of a wave
A
I=P/A
I = intensity (W/m^2)
P = Power (W)
A = Area (m^2)
2
Q
Curvature of a wave
A
Curvature = 1/r
where r = radius (m)
3
Q
Power of a lens
A
Power = 1/f
where f = focal length (m)
Power (D, dioptre)
4
Q
Refractive Index
A
n = c/v
