美国科学60秒 SSS 2012-10-29（在线收听）

When Pablo Panda Sandoval made history with 3 home runs in game one of the world series his head was probably buzzing. But when batters in chilly Detroit had the ball not quite right in the next couple of the nets, it will be their hands that buzzing. Ouch. Those hurting hands are caused by vibrations in the bat after makes contacts with the ball and when captured on high speed video they can actually see the player's hands losing contact with the bat as they bends back and forth at the speed of 6-700 times a second. Ouch but Penn's states Daniel Russell has a solution, a shock of absorber in the bat's knob that's tune to cancel out the vibration frequency that cause the most painful stings. He presented the analysis of this new shock of absorber on October 22nd at a meeting of acoustical society of America. And thanks to a collaboration with baseball bat maker Marucci Sports, even if you can't hit the ball in the sweet spot like the Panda. Your hands may remain *.