Explore: Crystal Electric Filters

Filters designed by this methodology are archaically called "wave filters". Some important filters designed by this method are: Constant k filter, the

principles can be used to make other liquid crystal based optical devices. Liquid crystal tunable filters are used as electro-optical devices, e.g., in

used in similar circuits. A crystal oscillator relies on the slight change in shape of a quartz crystal under an electric field, a property known as inverse

of polarizer in use, for example for sunglasses, photographic filters, and liquid crystal displays. It is also much cheaper than other types of polarizer

crystal between the polarizing filters, light passing through the first filter would be blocked by the second (crossed) polarizer. Before an electric

calcium pyrophosphate crystals appear blue when their long axes are aligned parallel to that of a red compensator filter, or a crystal of known birefringence

parts of a crystal radio in greater detail. The antenna converts the energy in the electromagnetic radio waves to an alternating electric current in the

US: /piˌeɪzoʊ-, piˌeɪtsoʊ-/) is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter

of liquid-crystal display (LCD). An LCD is a flat-panel display that uses liquid crystals to change its properties when exposed to an electric field, which

same transfer function of the filters described in this article. Analogue filters are most often used in wave filtering applications, that is, where it