Although you might not think of them in this way, you are in possession of two extraordinary antennas, perfectly tuned to receive a narrow band of electromagnetic radiation. These antennas are not ...

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 ...

THE electromagnetic spectrum includes radiation over a wide range of energies and a variety of categories, many of which one senses or uses every day. These include microwaves, television and ...

Terahertz electromagnetic waves occupy a middle ground between electronics waves, like microwave and radio waves, and photonics waves, such as infrared and UV waves. For example, mobile phones use ...