THE modified form of the ionic deflexion theory of wave propagation, discussed by Messrs. Nichols and Schelling (NATURE, March 7, vol. 115, p. 334), appears to have been suggested in England and ...

The largest radio telescope FAST detects 90% circular polarization and rapidly changing linear polarization in the bursts of ...

With this project, the intention is to investigate the different propagation phenomena such as diffraction and scattering and their impact to radio channel characteristics in spatial, temporal and ...

Shortwave radio signals (3-30MHz) are highly susceptible to interference from power adapters, fluorescent or LED light sources, internet modems, routers and computers. The higher frequencies ...

Imagine factories and machines communicating with each other; that's the Industrial Internet of Things. mmWave technology helps make this happen by providing a super-fast internet connection, allowing ...

UK troops have used a revolutionary radio wave weapon to destroy a swarm of deadly drones for the first time. The breakthrough technology can target and disable the electronic circuits in drones ...

But what principles of the electromagnetic spectrum allow radio to work ... then also explains how they are different, and why a 1/4 wave dipole saves the day. Of course it doesn’t stop there.

AM (Amplitude Modulation) is a method of broadcasting radio and covers both Medium Wave (MW) and Long Wave (LW). Most AM radios have in-built aerials so the location of the radio is often the most ...

FM radio works the same way that AM radio works. The difference is in how the carrier wave is modulated, or altered. With AM radio, the amplitude, or overall strength, of the signal is varied to ...