[hw97karbine] has made a pretty cool tennis ball cannon. While making a cannon of this sort is nothing new to us, we were impressed by the effort taken to get a stoichiometrically ideal mixture of ...

In the video after the break you can see how the lights and sounds serve as a warning system for the laser itself, as the cannon can be seen “charging up” for a few seconds before emitting a beam.

"The future is here," the U.S. Office of Naval Research's Peter Morrison said Monday, as the Navy unveiled a solid-state laser cannon that can disable or destroy surveillance drones and small ...