Have you ever seen a flag being raised, or wondered how a mechanical clock works? Let’s take a look at some of the simple mechanisms that they use. Pulleys and gears. When a flag is raised, it will ...

For me, the new Steve Gerberich exhibit "Springs, Sprockets and Pulleys" at the Museum of Life and Science in Durham is kind of like looking at a page in a Richard Scarry book. There's just so much ...