Polarizer Chain

Polarizers

Polarizer 1 angle: 0°

Polarizer 2 angle: 45°

Polarizer 3 angle: 90°

Presets

Malus's Law: I = I₀·cos²θ. Unpolarized light loses half its intensity at the first polarizer; each later polarizer attenuates by cos² of the angle to the previous one. "Magic Middle" shows how inserting a polarizer between two crossed ones lets light through again.

Readout

I after P150.0%

I after P225.0%

Total transmission25.0%

I₀

100%

After P1

50.0%

After P2

25.0%

Total transmission

25.0%