All forms of electromagnetic radiation, whether they're called waves or rays, are generated by particles in motion. In a radio signal, for example, negatively charged electrons quickly move back ...

Electromagnetic waves travel at 300,000,000 metres per second (m/s) through a vacuum. Often a phrase is used to help remember the order of the groups of the electromagnetic spectrum such as Roman ...

yet it makes up just a small portion of the electromagnetic spectrum. We invite you to take this self-guided tour, which covers the spectrum from radio waves to gamma rays.

While composed of sub-wavelength structures, Frequency Selective Surfaces are capable of manipulating electromagnetic ...

You need to know about these quantities used in waves - what they mean, the symbols used for them and the units used to measure them. Don't get confused with this quantity frequency. It is not a ...

Phonon-polaritons are a unique type of electromagnetic wave that ... These phonon-polariton waves exhibit several unique ...