But often — if you’re careful — this curiosity pays off and you wind up learning how to make something cool like this coil gun from a camera flash’s capacitor. This handheld launches a ...

One of the best parts of building a coil gun is seeing just how fast you can get that slug to move through the air. [Daniel] built this speed meter to be able to see exactly that. It is comprised ...

In May 2014, the man released a video of himself making a coil gun, which fires bullets using magnetic force. The decision to arrest him came after an examination by the National Research ...