A walkalong glider is a type of model plane that's kept aloft, theoretically indefinitely, by someone walking along with it as it flies, generating rising air using a piece of cardboard, paddle, or even your body. Smithsonian Air & Space posted a template and instructions for making a simple paper walkalong glider. The plans come from a recent book by Stephen Voltz and Fritz Grobe (better known as the Mentos and Diet Coke guys) titled "How to Build a Hovercraft: Air Cannons, Magnetic Motors, and 25 Other Amazing DIY Science Projects."
In 1977, just a few months after Voyager 1 and 2 began their grand tour of the solar system, Carl Sagan gave the esteemed Christmas Lectures at the Royal Institution of Great Britain. You can watch them below via YouTube or at the
Vantablack is a pigment made from carbon that is so black that anything painted with it looks like a hole in reality. It absorbs 99.965% of visible light. The Action Lab Man made something even blacker than Vantablack, then shines lights and lasers onto it to see if it visibly reflects the light. He uses […]
The Action Lab Man demonstrates the physics of flowing air in several fun ways to explore Richard Feynman’s “reverse sprinkler problem.” A hypothetical reverse sprinkler (the sort that spins) is one that sucks in the fluid that surrounds it. Which direction does it turn? This question has led to lively debate among physics enthusiasts. This […]
Take a scroll through any app marketplace and you’ll see that the doors are wide open for any game these days – and any game developer. Like any creation, virtual or analog, it all starts with an idea. And if you’ve got one of those, the Complete Unity Game Developer Bundle can walk you the […]
At the rate the world is shrinking, you don’t need to be a globetrotter for a second language to be a useful skill. And if you’re looking to learn that second language (or a third, or fourth), uTalk Language Education is the learning program that makes progression not only easy but fun. If you can’t […]
Smokers on the go can breathe a little easier. With an innovative, easy-loading spiral design, the Twisty Glass Blunt offered a smoother, more consistent draw than conventional pipes. Now the Twisty Glass Mini delivers the benefits of its heavy-duty sister pipe in a more discreet package. For those that haven’t already made the Twisty Glass […]