(Nanowerk News) This light-control film is based on the fact that there is a change in the incident angle of sunlight between summer and winter. The film blocks sunlight in summer by using total ...

Here is a simple and low cost automatic bathroom light circuit. The light automatically turns on when the bathroom door is opened, and remains lit in the occupied state. When the door is opened again ...

This initiative will help in environmental protection. Over the last few years, Indian Railways has been implementing various measures to conserve energy. In this regard, the West Central Railway zone ...

THE problems which arise in connexion with maintaining the voltage of supply constant in electrical distributing systems have been closely studied by electrical engineers during recent years. The ...