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Blog - Physicists Build Diode For Electromagnetic Waves
1. 11 2010 (05:10)
A device that allows polarised microwaves to travel in one direction but not the other has exciting potential
The electronic diode is a device that allows current to travel in one direction but not the other. That makes them handy things to have around. So handy, in fact, that you'd be hard pressed to find an electronic device that doesn't contain one. It's no exaggeration to say they have become one of the fundamental building blocks of the modern world.

