This kind of thinking would be as important as science for the invention of the transistor ... for radio sets which needed to turn alternating current into direct current. The vacuum tube didn ...

the Shockley Diode could do more than a transistor. For one, it acted like a rectifier, able to turn alternating current into direct current. Two, it switched on and off when a specific amount of ...

In the future, Europe is to be dominantly powered by renewable energy. The expansion of wind and solar power capacity and the provision of sufficient power in winter are just two of the challenges ...