A diode is a device that allows electric current to flow in only one direction, from its anode towards its cathode but not the other way around. There is plenty of online material explaining diode ...

Over the past decade, researchers have made many skin-like medical and environmental sensors. But adding stretchable wireless communication circuits to these sensors has been difficult. Those radio ...

The project describes the operation of a cheap keychain lasers that are being sold in low price. In theory, most common laser heads contains two semiconductors inside which includes a laser diode (LD) ...