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 ...

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 ...

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 ...

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

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 ...

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