Cathode Ray Tube (CRT)

Every one must have seen TV/Computer picture tubes. Have you ever thought, How the display on TV screen comes?? Its all because of the CRT ( of any mode) used in them. CRT denotes for Cathode Ray Tube. ...

Type of SemiConductors

There are two type of Semiconductors:N type Semiconductor :When we add a minute quantity of pentavalent impurity to a pure semiconductor, then a semiconductor crystal is formed and is known as N type  of semiconductor. ...