Purdue University's Professor Mark French and his graduate students, Craig Zehrung and Jim Stratton, have built an air gun that fires a ping-pong ball at over Mach 1.2 (900 mph or 1,448 km/h).

Here A is the cross sectional area of the ping-pong ball. Obviously, Wikipedia has the dimensions of an official ball. The radius is 20 mm with a mass of 2.7 grams.

A Ping-Pong gun can rip soda cans apart. Mark French via YouTube. Jan. 28, 2013, 7:19 PM EST. By John Roach. Purdue University researchers built a Ping-Pong gun, shown here, that fires balls at ...

If you've ever built any device like mine or the Supersonic Ping-Pong Gun let me know, I'd be interested to hear what you built and how well it worked. Editorial Standards Reprints & Permissions.

3. What size are ping pong balls. Standard ping pong balls are either 40mm or 1.5" in diameter. 4. How far/Fast do you want to shoot them? Not too fast to be dangerous. 10-20 feet is probably ...

Click to view. Ping Pong Gun – video powered by Metacafe. This is a friendly warning to all Gizmodo employees. You will never feel safe while on the job ever again.

Savage, the former MythBuster turned founder of Tested, completed for his latest one-day build something he said has been on his mind since he was a teenager.Not just a ping pong-ball gun like the ...

If there’s one thing wrong with Ping Pong Guns, it’s that they can’t fire their ammunition at supersonic speeds. At least, that’s the feeling of Mark French, a mechanical engineer at ...