您现在的位置: 首页 > 英语听力 > 媒体资讯 > 60秒科学 > 正文

60秒科学:在棒球棍上耍聪明?麻烦学学物理先~~

时间:2010-09-20 12:02:20 来源:scientificamerican 编辑:keke  每天三分钟英语轻松学

| 收藏

评论  打印 字号: | |  

What distance a power hitter gains using a lighter corked bat he loses in collision efficiency. But a singles hitter may get solid contact more often with the lighter, illegal bat. Steve Mirsky reports

强力的击球手用软木填塞球棍得到的那点更远的距离,由于碰撞效率的问题而被失去了。 但是,用这种轻的违规的球棍,一垒安打手可能会更多地稳稳击中球心。Steve Mirsky报道

Baseball players sometimes cheat! One popular method has been to cork 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 lighter bat faster, and thus hit the ball further.

Of course, most ballplayers aren’t physicists, 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 corked bats under controlled conditions. The doctored lumber actually usually causes the ball to go less far, they found. The work appears in the online forum the Physics arXiv. [http://bit.ly/9At1lX] 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 Dent.

—Steve Mirsky

[The above text is an exact transcript of this podcast.]

收藏

相关热词搜索: 60秒科学

上一篇:世界最大飞蛾诞生 翅展可达30厘米

下一篇:戴lady gaga最爱的隐形眼镜或成瞎子

您可能还感兴趣的文章

60秒科学:美味松露 动物也爱吃
听力文本 高品质的松露可卖到每磅1000美元。事实上,在环境研究中,科学家也用松露来吸引动物,因为它们也很爱吃这个。Truffles Serve Up Environmental InfoQuality tru

时间:2010-04-08 编辑:

2010年麻省理工学院清洁能源奖揭晓(有声)
英文文本奥巴马当日在麻省理工学院发表演讲。他指出,研究可替代石油的清洁能源关系到国家的竞争力。“中国、印度、日本、德国,每个国家都在争先开发能源利用的新途径,

时间:2010-05-13 编辑:

60秒科学:"包办婚姻"也可能有真爱
研究表明,爱情婚姻起初甜蜜度很高,后来慢慢下降;而包办婚姻则是起初的满意度低,然而随着双方熟悉度的增加,会逐渐产生好感。Think arranged marriages are loveless?

时间:2010-03-12 编辑:

60秒科学:晚上在照明下的老鼠更容易变得肥胖
听力练习研究表明,在晚上给老鼠给光照,老鼠会变得不那么活泼,而且会发胖。 Light at night increases mice's body mass, apparently by shifting food intake to time

时间:2010-10-15 编辑:

最新文章

无觅相关文章插件,快速提升流量