900-MPH Supersonic Ping-Pong Bazooka
popularmechanics.com
3 threads
Subsonic, but more ping pong wreckage since it's on topic:
No, it's quite clearly supersonic. This is a different design than the tube they talk about first.
The colon at the end of the first line was intended to map the first text string to the last text string of my original post. So, you're right, and sorry for the confusing grammar.
Don't miss the impressive video.
When I loaded the page, the video link wasn't working. Here's the video:
That's a more detailed video about the project. The shorter video from PopularMechanics is here: http://bcove.me/pbzl94cm
Holy crap. That's quite a service.
Oh C-D nozzles. Hands-down the most useful thing I learned in undergrad.