polarizers
/ˈpoʊləˌraɪzərz/
noun
- Devices or materials that filter light waves so that they vibrate in only one direction.
- Photographers often use polarizers on their camera lenses to reduce glare from water or glass.
- Scientists use polarizers in microscopes to study the structure of crystals.
- Sunglasses with built-in polarizers help cut down on harsh reflections from roads and snow.