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(单词翻译)
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?
Baseball players sometimes cheat! One popular method has been to cork1 the bat. You drill out some of the core of the bat, and replace the heavy wood with light cork. You can then swing the lighter2 bat faster, and thus hit the ball further.
Of course, most ballplayers aren't physicists3, so they don't realize that by making the bat lighter, they're reducing the collision efficiency. You swing faster, but get a limper contact. In theory, anyway.
So physicists led by the University of Illinois’s Alan Nathan tested corked4 bats under controlled conditions. The doctored lumber5 actually usually causes the ball to go less far, they found. The work appears in the online forum6 the Physics arXiv. So for a power hitter to cork his bat is a bad idea.
But the researchers note that, ironically, a corked bat might result in more homers from non-homer hitters. Who can watch a pitch slightly longer before swinging, make up for the lost time with a faster swing and achieve more solid contact more often. So a corked bat is a bad idea for Sammy Sosa, who got caught using one. But a good idea for, say, Bucky Dent7.
Thanks for the minute. For Scientific American's 60-Second Science. I'm Steve Mirsky.
1 cork | |
n.软木,软木塞 | |
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2 lighter | |
n.打火机,点火器;驳船;v.用驳船运送;light的比较级 | |
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3 physicists | |
物理学家( physicist的名词复数 ) | |
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4 corked | |
adj.带木塞气味的,塞着瓶塞的v.用瓶塞塞住( cork的过去式 ) | |
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5 lumber | |
n.木材,木料;v.以破旧东西堆满;伐木;笨重移动 | |
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6 forum | |
n.论坛,讨论会 | |
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7 dent | |
n.凹痕,凹坑;初步进展 | |
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