Excitons—bound pairs of electrons and an electron hole—are quasiparticles that can arise in solids. While so-called "bright" ...

Finding the keys you dropped in your car or navigating a dark basement are a lot easier with the help of one of the best flashlights.

In A Nutshell Disrupted circadian rhythms from artificial light at night can affect immune function, neuroinflammation, ...

None of that really matters all that much though, because a light with a ton of lumens doesn’t necessarily mean it’s the brightest in practice—or the best light for you.

Did you know some of the brightest sources of light in the sky come from the regions around black holes in the centers of galaxies? It sounds a little contradictory, but it's true. They may not ...

When millions of people turn off their lights for Earth Hour each year, something remarkable happens in the night sky above ...

No more hunting for batteries in a pinch—or in the dark. Check out our picks for the best USB-charged flashlights for 2024.

A reliable flashlight should stay bright over time, be durable, and have a long battery life. We field-tested 10 flashlights — here are the top 5.

The company already boasts the world's brightest flashlight, the MS32, which blasts out 200,000 lumens that can light up anything in its path to a distance of 1,618 m (5,308 ft).

The Maglite ML300LX Flashlight is on sale at Amazon for 48% off, and buyers say it's "the brightest Maglite" they've ever seen.

The NetCan Rechargeable Tactical Flashlight Set is the perfect way to light your path in an emergency. At just $16, the brightest shoppers will buy one before this limited-time deal goes dark for ...