Description: This mini version of flying pterodactyl made out of balsa wood + extra light plastic film for wings. It's rubber powered and can fly up to 20 seconds. If you like this video don't forget ...

Ever noticed that a rubber band gets warmer when it’s stretched? The bands also get cooler when allowed to snap back to relaxed length? [Ben Krasnow] noticed, and he built a rubber band cooled ...

Students stretch pre-cut rubber bands to their lips, stretch the rubber bands, and then allow them to contract. The rubber bands grow warmer as they expand and cool as they contract. To Conduct ...