Light therapy can boost your mood, but you need the right model. Here's what experts say about picking an effective model.

Israel has delivered its first operational high-power laser air-defense system to the military to counter drones at a ...

Abstract: A 1.8-km optical wireless communication (OWC) link with 0.56° wide divergence angle is utilized to simulate a 1000-km low Earth orbit (LEO) satellite-to-ground station laser communication ...

Abstract: We demonstrate a chirped fiber Bragg grating (CFBG) based stretched-pulse mode-locked (SPML) wavelength-swept laser that uses both intra-cavity and post-cavity stretching. The SPML laser ...

Meteors from the Ursids appear near the Little Dipper, which is part of the constellation Ursa Minor. Only skywatchers in the ...

Most people use red light therapy 2-5 times a week for 10-20 minutes. You can use red light therapy to increase melatonin and improve your sleep. Do not use red light therapy for longer than 30 ...

The importance of light in our daily lives is often underestimated. Light wakes us, guides us, and nourishes us. It can motivate and make you feel energized or create a cozy feel and help you relax.

David Spade slammed a mall's tree-lighting ceremony for omitting the word "Christmas." In the Sunday episode of Spade and Dana Carvey's "Fly on the Wall" podcast, the 61-year-old "Grown Ups" actor ...