The simplest way to project an image onto a screen is with a pinhole. What the heck is a pinhole? It's a hole so tiny it has to be made with a pin. See, science isn’t that hard. People have been ...

The thought of making your own camera may sound daunting. Today, a camera is seen as highly technical and expensive machine. But at its most basic, a camera is simply a box with a hole in it, and ...