Weekend Workshop: Detect radio waves (and nuclear detonations) with this DIY coherer

By using tech made popular in the early 1900s, anyone with a 3V battery, metal shavings, and electrical wiring can easily build a coherer energy detector. It may be old-fashioned, but we know your friends haven't seen anything like it.
The post Weekend Workshop: Detect radio waves (and nuclear detonations) with this DIY coherer appeared first on Digital Trends.