We've heard of electromagnetic pulses cutting steel in milliseconds, but apparently they can also be used to stop moving cars just as fast. The cannon demonstrated in the video here is still a prototype, but it definitely seems to work.
You need to cut up some chunks of steel. Mechanical tools are prone to wearing out and lasers are just too expensive, so what do you use? Fast-cutting electromagnetic pulses, what else.
Sci-fi tales are full of electromagnetic-pulse devices that blow out every computer from here to Kalamazoo. But US Army researchers are testing a short skinny high-powered microwave bomb that could actually be used in combat.
It looks like a certain British Ministry of Defense woke up on the wrong side of the bed, as they've got a pretty pessimistic view of what we've got in store for us in the next 30 years. In a newly issued report on what Britain needs to prepare for, they think we've got some pretty sizable and terrifying advancements…