Leumas Physics

Malus Law

I = I_0·cos(θ)^2

What it says

How much polarised light survives a polariser set at an angle to it.

Symbols

SymbolQuantityDimension
ITransmitted intensity (W/m^2)M T^-3
I_0Incident intensity (W/m^2)M T^-3
θAngle between axes (rad)1

Work it out

Enter what you know. No account needed.

Fill in all but one: I_0, θ, I are all empty.

Filed under Optics · derive through it in the explorer