ION densities of the order of 1011 ions/cm.2, such as occur in gases in glow discharges under the usual conditions, are of the correct magnitude to affect very considerably the index of refraction ...

Later on, when I hosted my own late-night radio show, I did my best to sound like Clyde Clifford, a disc jockey on KAAY AM ...

We explore the key components of radios, including antennas, transmitters, receivers, and modulators, and how they work together to convert electrical signals into radio waves and then back into ...

Radio frequency (RF) refers to the part of the electromagnetic spectrum where electromagnetic waves can be generated by alternating current fed to an antenna. It spans from around 3 kHz to 300 GHz.

Signal modulation is critical to communications. Look at any car radio and you see "AM" and "FM." AM stands for "Amplitude ...

A starry-eyed few thousand owners of the latest fangled radio sets in areas around New York City, Boston, Washington, Columbus (Ohio), Chicago and Milwaukee, nowadays enjoy radio entertainment that ...

When you tune in to the radio, the announcer says, “Welcome to 100.1 FM Gold” or “You are listening to Akashvani at 783 AM”. The terms ‘AM’ and ‘FM’ refer to forms of signal ...

Researchers in Drexel University’s College of Engineering have developed a thin film device, fabricated by spray coating, that can block electromagnetic radiation with the flip of a switch. The ...

PanoRadar's radio imaging works a lot like LIDAR. On a motor sits a cylinder of 1,200 tiny synthetic antennae, which each emit radio waves. As the motor spins, so does the cylinder, flinging radio ...

Satellite radio uses frequency modulation, while internet streaming radio uses digital modulation. British Post Office engineers inspect Marconi’s radio equipment during a demonstration on Flat ...

Mystery of pulsing radio waves from deep space may be solved: scientists By . Alex Mitchell. Published Dec. 11, 2024, 3:54 p.m. ET.