Navy Railgun Successfully Fires Multi-Shot Salvos

Navy Railgun Successfully Fires Multi-Shot Salvos
Why would a railgun, which uses a massive electrical pulse rather than gunpowder, throw off a big cloud of smoke when it fires? Because the projectile is moving so fast it vaporizes the air around it.

https://www.youtube.com/watch?utm_source=ifttt&v=QO_zXuOQy6A July 24, 2017 at 08:26PM
via Digg https://www.youtube.com/watch?utm_source=ifttt&v=QO_zXuOQy6A