How to build a telescope If you’re someone who spends their evenings watching the night sky and trying to get a glimpse of meteor showers or constellations, a telescope is a must. What can be… ...

It starts out with the basics—how to select a telescope, and how to decide whether to make or buy your desired instrument.

Jim Dwyer used the microscope to find small objects from 9/11 that had stories hiding inside of them. He discovered that one of the biggest stories of the century could be told through artifacts ...

For the last century and a half, Voigt points out, most microscope objectives used in bio-imaging have been built with lenses. Mirror-based designs have largely been neglected, but they do have one ...