It’s not just bright—it’s blinding. We got our hands on the world’s brightest flashlight and put it through a series of intense tests to see if it lives up to the hype. From lighting up fields to ...

In this video I see how fast we can get a radiometer to spin by shining the world's brightest flashlight on it. Then I talk about the real reason the Crookes radiometer spins when you shine light on ...

Okay, so you know how it absolutely sucks when you're exploring the polar icecaps and your flashlight craps out at sub-zero temperatures because it's simply too cold? Your batteries might be to blame ...

One of the most useful items you can have is a powerful flashlight. Whether you’re dealing with a winter blackout or enjoying a summer camping trip, you can’t get through it without a good flashlight.