When we think of powerful magnets used in particle accelerators or for NMR (nuclear magnetic resonance), we often envision bulky machines, sometimes the size of buildings. But in an extraordinary ...

A DIY PCB fixture using split-Kelvin technique enables accurate, repeatable LCR measurements for low-impedance SMD components.

Each spring, amateur astronomers attempt the ultimate stargazing challenge—an overnight quest to spot every galaxy, nebula, and star cluster in Charles Messier’s famous catalog. Photographer Alan Dyer ...

Recently, the people of the city of Kolkata witnessed the earthquake for a short time; individuals ran out of high-rise offices to the streets in panic.