How Can A Bullet-proof Vest Stop A Bullet?
Engineering / Breakthroughs
Here's an experiment: take the small coil springs from a dozen or so retractable pens and roll them together in a heap until they are thoroughly tangled and entwined. Now try to pull them apart from e continue reading this fact
|
A Quick Guide To Gliders
Engineering / Flight
A glider is a special kind of aircraft that has no engine. Paper airplanes are the most obvious example, but gliders come in a wide range of sizes. Toy gliders, made of balsa wood or styrofoam, are an continue reading this fact
|
Alloys
Engineering / Materials
Water is a clear colorless liquid. So is methanol. If one were to take a quantity of methanol and pour it into some water, the result is also a clear colorless liquid. But this one is something new; a continue reading this fact
|
