By building simple machines, kids can learn the concepts of physics and mechanics in an exciting and tangible way. Before ...

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called ...

But the first machines were analog and now ... Li and Mao used their algorithm and a simple experimental setup to create the lattice that gives that solution. (Another similarity to biology ...

First, he shows the intrinsic problem: sewing by hand requires you to reverse the direction of the needle, and it isn’t clear how to make a simple machine to do that. Sure, today you could ...