World’s Longest Home Run (The “Mad Batter” Machine) Smarter Every Day made this mad batter machine and sending balls 250 mph. Facebook Prev Article Next Article Experiments Checkout these cool gadgets... Related Posts Spinning Magnet Levitates Magnetic Dart Launcher Is Very Satisfying to Watch Neat Little Demonstration of Relative Motion How to Make Rainbow Fire Compilation of Amazing Science Experiments 10 Quirky Science Stunts
