Polarisation (HSC SSCE Physics): Flashcards

Direction of oscillation of electric field

Unpolarised light

All electric fields oscillate in same 2D plane

Reflection, scattering, polarising filter

Analyser

Square of amplitude: $I \propto A^2$

$I = I_{\text{max}}\cos^2\theta$

Parallel to polarisation plane ($\theta = 0$)

Perpendicular to polarisation ($\cos\theta = 0$)

Lux ($1 \text{ lux} = 1 \text{ lumen} \cdot \text{m}^{-2}$)