Have we got the project for you: [Robert Hart]’s vortex cannon design. We’ve seen vortex cannons before, where you usually fix a balloon to the back of a trash can. Pull on the balloon ...

[Ben Krasnow’s] water vortex machine has been an exhibit in the lobby of the San Jose City Hall for quite some time now. Unfortuantely he recently had to perform some repair work on it due to ...