Malus's Law calculator
Transmitted intensity through a linear polarizer at angle θ.
Category: Polarization
Formula: I = I₀ · cos²(θ)
Inputs
| Input | Parameter | Unit | Default |
|---|---|---|---|
| Input I₀ | I0 | W/m² | 1 |
| Angle θ | theta | deg | 30 |
| # polarizers | n | 1 |
Result with the default inputs
- Transmitted I: 0.75 W/m²
- Transmission: 75%
Open it with your own values: put each input in the address as a parameter, for example /calculators/maluss-law?I0=1. A unit other than the listed one goes in <parameter>_unit.
Read more: Wikipedia: Polarizer, Malus's law and other properties