Carbon-microphone:
Principle: Resistance varies with change in pressure sensed by diaphragm of a microphone. Construction : Consist of a thin diaphragm which is connected to a capsule having flexible bellow. A capsule containing carbon gran…
Principle: Resistance varies with change in pressure sensed by diaphragm of a microphone. Construction : Consist of a thin diaphragm which is connected to a capsule having flexible bellow. A capsule containing carbon gran…
Principle: It is based on the principle of absorption of total radiation from hot body. Construction and Working: It consists of blackened tube open at one end to receive the radiation from the hot body whose temperature…