Topic: Message #211389

[crawlerdan]

The only compression/sonic waves I've ever experienced was with my uncles potatoe cannon he made.  We would hammer a 3" pipe into the ground out in the middle of a grassy field, stuff whatever fits into the cannon and fill with oxy/acetylene through a hole at the bottom and touch off!    I used to love watching the compression waves in the grass, I used to get nauseous after about two dozen of those!  Word of advise, don't use golf balls!  They go out of site really quick!!!  And beer cans if put in bottom first, they turn inside out!

kaboom