Researchers in Drexel University’s College of Engineering have developed a thin film device, fabricated by spray coating, that can block electromagnetic radiation with the flip of a switch. The ...

This discovery meant that light was no more than an electromagnetic wave, part of the electromagnetic spectrum. Like all waves, light’s nature is defined by its wavelength – the distance ...

Propagation of electromagnetic waves inside the pyramids of Cheops at different lengths of radio waves (from 200 to 400 meters). The black rectangular position of the so-called King's Chamber.