The film explains the concept of electromagnetic waves, particularly focusing on their applications in radar, radio, and television. It describes how a crystal set functions as a simple radio receiver ...

Abstract: It is shown that a new mode of radio wave diffraction occurs at the peak of mountains mediated via the terrestrial surface plasmon. If mobile electrical charges exist on the Earth's surface, ...

Abstract: Expressions are given for the diffraction field far behind, and the surface currents on, a parabolic cylinder. Approximate values for the field strength and current density are given when ...

For visible light, these structures are microscopic, but tall buildings in a city can act like a diffraction grating for radio waves. Gratings can be made by creating variations in the thickness of an ...

EOMs are commonly used in applications that require q-switching such as research laser systems, military lasers, and medical uses. Their ability to modulate large aperture beams makes them ideal for ...

In the years that followed, French engineer August Fresnel’s findings on diffraction ... Using this apparatus, he detected radio waves (which also traveled at the speed of light).

Fast radio bursts (FRBs) are among the most puzzling astronomical phenomena. These brief yet intense bursts of radio waves, ...

The SKA-Low radio telescope in Western Australia is slowly coming online. It will probe the shape of the universe and study ...

Astronomers have identified the source of strange radio flashes: a binary system containing a white dwarf, the remnant of a ...

However, traditional dark-field microscopy is limited by the diffraction barrier and often requires complex, bulky setups with precise alignment. Super-resolution imaging techniques, which can ...

Radio astronomers see what the naked eye can't. As we study the sky with telescopes that record radio signals rather than light, we end up seeing a lot of circles. The newest generation of radio ...