BioLite's NanoGrid Is a Lantern, Battery, and Flashlight All In One

This new BioLite NanoGrid functions as a hanging work light or lantern, a multi-point area light, a powerful flashlight and a portable power source for your electronics, all in a single $100 product. The ultimate camping gadget? I got my hands on a unit to find out. » 2/25/15 4:43pm 2/25/15 4:43pm

Lumens and Lux: Light Words Explained in a Single Image

If you've ever tried to compare flashlights or lighting of any kind, you've probably been confronted with a bunch of confusing terms like lumen and lux that are supposed to describe how powerful a light is.We think? Well here they are explained in a single image. » 7/27/13 12:30pm 7/27/13 12:30pm

The Best Bike Light For Less Than $100

A good tail light helps a bike rider get noticed on the road at night. The front light, however, has a more difficult challenge—it has to make you a beacon to drivers, and, crucially, it has to make the darkened world visible to you. » 9/05/12 1:40pm 9/05/12 1:40pm

Giz Explains: Brightness

Your smartphone's screen: 500 nits. Your laptop's: 400. Your living room projector bulb: 1700 lumens. Your mini Maglite's: 16. To gadget makers, brightness is a numerical marketing weapon, wielded often and without grace. To us, it's just another spec. No more! » 9/28/10 4:00pm 9/28/10 4:00pm

Lightbulb Labels Will Start To Look Like Nutrition Facts

Soon, when you buy a new light bulb you'll see a new Nutrition Facts-style label that details the numbers most important to you: how bright the bulb is, what the energy cost is, and when they'll burn out. » 6/28/10 2:00pm 6/28/10 2:00pm

The World's Brightest Cycle Lamp Is Called Betty

Betty is a 22-watt, 1400-lumen bicycle lamp that you can buy from Gretna Bikes. And it's expensive—at 84 per lumen, the grand total is $1,185. It is, however, the light of all lights for cyclists— just have a look at what it can do below. » 10/02/07 6:28am 10/02/07 6:28am