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 ...

Similar substances are used on bank notes to detect forgeries ... Changes in atoms and their nuclei can cause electromagnetic waves to be generated or absorbed. Gamma rays are produced by changes ...

Light, heat, radio transmissions, and medical X-rays may not seem all that similar, yet they are all forms of electromagnetic radiation—waves moving through space (not just outer space ...

Detection of electromagnetic fluctuations that generate ‘killer electrons’ challenges scientific ideas about radiation in our cosmic neighbourhood.

THz waves, located in the far-infrared region of the electromagnetic spectrum, can be used to perform non-invasive imaging through opaque materials for security and quality control applications.

Peculiar electromagnetic bursts of energy known as “chorus waves” have been detected far from our planet for the first time by a China-led team of scientists, whose findings have raised new ...