美国科学60秒 SSS 2012-10-30（在线收听）

When Pablo Penda Sandoval made history with 3 home rounds in game one of the world series his head was probably buzzing but when batters and chilli detroy hit the ball not quite right the next couple of nights it will be their hands that are buzzing those hurting hands are caused by vibrations in the bat after it  makes contact with the ball and when captured on high speed video they can actually see the players hands losing contact with the bat as it bents back and forth at a speed of 600-700 times a second but Penn has a solution a shock absorber in the bats knob that is tune to cancel out the vibration frequencies that cause the most painful stings he presented a analysis of a new shock absorber on  10.22 at a meeting of acoustical society of America and thanks to a collaboration with baseball bat maker sports even if you cannot hit the ball on Swiss Ball like  Penda your hands may remain unstung