Movies and stories from the early 20th century sometimes show an elegant lady or gentleman using a magnifying glass to read a letter. Generically, a magnifying glass makes very small things appear ...

If you’re reading Hackaday, you’re probably intimately familiar with really small parts. 0201 resistors are tiny, and even smaller parts aren’t unheard of. The screws that go in your phone are ...

Astronomers have shown how gravitational lensing allows us to see the faintest and most distant galaxies, helping us to understand the origin of the Universe. The first gravitational lens, a ...