Terahertz (THz) waves are located between microwaves and infrared light in the electromagnetic spectrum. They can pass ...

A new patterned spintronic emitter enables room-temperature control of terahertz wave polarization.

Radio waves have wavelengths ranging from thousands of metres down to around 30 cm. This means they can easily travel around large objects, like hills, mountains or buildings. Microwaves have ...

There's lots to discover in the electromagnetic spectrum. Here's a tour that begins with radio waves and takes you through microwaves, infrared radiation, light, ultraviolet radiation, and X-rays.

It describes how a crystal set functions as a simple radio receiver and introduces microwaves as shorter electromagnetic waves. The program demonstrates properties of these waves, including ...

The question “are we alone in the universe?” has fascinated people for centuries. In 1959 two Cornell University physicists described how we might answer that question through interstellar ...

Magnetrons cause electric charges to oscillate and emit microwaves — a more powerful form of radiation than the radio waves previously used for radar defences. The post-war period saw a ...

But for me it was disappointing because I know it is actually possible to see what radio waves look like ... this radar to directly image a 2.4 GHz microwave field emitted from its own transmitter.

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 ...

Microwaves are shorter than radio waves but longer than infrared radiation. The microwave used for cooking is about 12 centimeters from crest to crest, says Louis Bloomfield, a professor of ...