Exposure to the sun's light can be both beneficial and harmful. New research has suggested new uses for light therapy beyond ...

Nuria Catalan Lasheras and Igor Syratchev explain why klystrons are strategically important to the future of the field – and ...

In the frequency (f) regime of interest for microwave engineers, there exist three (one longitudinal ... with the wavelength-with little decay of the amplitude under the ambient temperature and ...

Researchers have improved upon techniques that use thin films to compress infrared light, demonstrating three advantages that ...

A team of international astronomers have discovered a new cosmic object emitting both radio waves and x-rays. Astronomers from the International Centre for Radio Astronomy Research (ICRAR), in ...

Save guides, add subjects and pick up where you left off with your BBC account. A sound wave is a vibration that travels through a solid, liquid or gas such as the air or water. A loud sound has a ...

Widely tunable continuous-wave THz generation from 0.1 to 2.25 THz was demonstrated. The photonic integration chip is designed based on standard InP foundry model, which is capable of volume ...

Cover shot of Alaia Bay from Wavegarden. The in-land surfing revolution is here. Imagine, the next John John Florence might not be born next to the best wave in the world, but in the inner-city, and ...

Hyperspectral imaging (HSI), or imaging spectroscopy, captures detailed information across the electromagnetic spectrum by acquiring a spectrum for each pixel in an image. This enables precise ...

Pulse pressure and pulse wave velocity, markers of arterial stiffness, have been associated with stroke, dementia, and lowered levels of cognitive function. Here we examine longitudinal relations of ...

EM waves are 'transverse' waves. This means that they are measured by their amplitude (height) and wavelength (distance between the highest/lowest points of two consecutive waves). The highest point ...