Discover how to build a simple DIY projector using everyday materials like cardboard and a small flashlight or laser pointer.

Learn how to make your own smartphone projector at home using simple materials like a cardboard box, hot glue, and an ...

In a perfect world, humans would have been able to enjoy the beauty of solar eclipses by looking at them directly. In reality, however, that isn't quite possible, given that looking at the sun during ...