A fun physics event called the "Homemade Air Cannon Contest" was held at a school. Students were tasked with using their homemade air cannons to knock over empty soda cans pyramid placed 8 meters ...

[NightHawkInLight] a.k.a. [Ben] recently built an awesome high power air cannon out of PVC pipe. PVC air cannons are great, and everyone should build one of these at some point in their life ...