K4GPB writes: "Animated article shows inner workings of water pump guns capable of shooting 50 feet. In 1982, a nuclear scientist named Lonnie Johnson came up with an ingenious solution...In the late '90s, a new wave of Super Soaker guns came out that boasted higher pressure levels." Super soakers make great cat behavior-correction devices too.
Attend or create a Slashdot 20th anniversary party! DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Check out the new SourceForge HTML5 Internet speed test. ×