Polarizing filter
part · 1929 · Electric age
Polaroid (Land).
Principles and materials it uses
- Polarization of light — uses. It passes one polarization.
- Celluloid — is made of. Land’s Polaroid is aligned crystals in a film.
- Glass — is made of. Between sheets of glass.
Where it is used
- Liquid-crystal display — is part of. Polarizers.
- Sunglasses — is part of. Polarized glasses.