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. Electromagnetic waves can be separated into seven distinct groups in the spectrum. Each group contains a range ...

Webster, this spectrum is “the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma ...

Electromagnetic waves are members of a family of waves with common properties called the electromagnetic spectrum. The electromagnetic spectrum is a continuous range of wavelengths. The types of ...

Researchers at ETH Zurich have managed to make sound waves travel only in one direction. In the future, this method could also be used in technical applications with electromagnetic waves.

Electromagnetic radiation is the general term for the more familiar light and radio waves, but also includes gamma rays, x rays, ultraviolet rays, and infrared. All of these forms of electromagnetic ...

Recently, a research team led by Prof. HUANG Zhulin from the Hefei Institutes of Physical Science of the Chinese Academy of ...