Researchers develop a highly efficient method to provide coherent light of any wavelength from visible to mid-infrared with a single tiny device. (Nanowerk News) Focused laser-like light that covers a ...

Even if there are windows in a room, the amount of light is very low.  Fortunately, there are relatively cheap LED options ...

EPFL researchers have developed a method to calibrate electron spectrometers with extreme accuracy by linking microwave, ...

The invisible light spectrum, encompassing ultraviolet and infrared wavelengths, has long beguiled the human eye. A revolutionary lens technology is now making this unseen light accessible, heralding ...

Phytoplankton is the basic food source for many aquatic organisms. A new study shows that the light spectrum is more important for these microalgae and for lake ecosystems than previously assumed.

UV light is one of the most effective methods of sanitation. Here's how UV rays work and evidence that at-home UV sanitization is a great tool.

Many Americans spend more than seven hours in front of screens daily, which can affect your skin. (Getty Images) You probably do your best to protect your skin from ultraviolet rays by slathering on ...

Spring is galaxy season for many amateur astronomers. However, when looking through an eyepiece instead of a camera for astrophotography, you might think of this as the season of pale gray smudges ...

Using blue-light glasses won't necessarily protect your vision, but it could help improve your sleep cycle. (Truedark) Eight hours of screen time used to be unthinkable. Now it's just Tuesday. So it's ...

The experimental setup shown here incorporates on-chip optical parametric oscillator (OPO) technology to generate a frequency comb of laser-like light covering a wide range of frequencies with very ...