A magnifying glass contains a lens that’s made into a convex shape in order to better see small objects. Magnifying glasses have plenty of uses, from making it easier to read a book to examining ...

Headband magnifiers are convenient tools for painting miniatures, embroidery, puzzles, and more, keeping hands free and providing a closer look at fine details. To pick the best headband magnifier, ...

Researchers are studying gravitational lenses to find out what dark matter is made of. Here’s a neat physics experiment you can do at home. Hold an empty wineglass by the bowl so you can look through ...