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SSS 2009-08-05

时间:2010-05-18 05:56来源:互联网 提供网友:mark@li   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60 Seconds Science. I'm Steve Mirsky. Got a minute?

 

In 1900 legendary1 physicist2 Max Planck described the way energy gets dissipated from any nonreflective object, called a blackbody. But even Max said if something else is really, really close to the object, his law might not hold.

Now physicists3 from M.I.T. have finally shown that if you can get another object near enough to the blackbody, but still not touching4 it, Planck’s blackbody radiation law really does break down. Which is good news for you.

The reseachers had been able to put flat plates a millionth of a meter apart. Which was still too far away to see any effect. But with glass beads5, they achieved separations of only 10 billionths of a meter. And the radiation flow was up to a thousand times greater than Planck’s law predicts. The study appears in the August issue of the journal Nano Letters.

It’s good news because of potential applications. For example, computer data storage and solar energy devices are all less efficient because of heat buildup. If tinier distances can be achieved in these real-world devices, such waste could be made to walk the plank6.

 

Thanks for the minute, for Scientific American's 60 Seconds Science. I'm Steve Mirsky.
 


点击收听单词发音收听单词发音  

1 legendary u1Vxg     
adj.传奇(中)的,闻名遐迩的;n.传奇(文学)
参考例句:
  • Legendary stories are passed down from parents to children.传奇故事是由父母传给孩子们的。
  • Odysseus was a legendary Greek hero.奥狄修斯是传说中的希腊英雄。
2 physicist oNqx4     
n.物理学家,研究物理学的人
参考例句:
  • He is a physicist of the first rank.他是一流的物理学家。
  • The successful physicist never puts on airs.这位卓有成就的物理学家从不摆架子。
3 physicists 18316b43c980524885c1a898ed1528b1     
物理学家( physicist的名词复数 )
参考例句:
  • For many particle physicists, however, it was a year of frustration. 对于许多粒子物理学家来说,这是受挫折的一年。 来自英汉非文学 - 科技
  • Physicists seek rules or patterns to provide a framework. 物理学家寻求用法则或图式来构成一个框架。
4 touching sg6zQ9     
adj.动人的,使人感伤的
参考例句:
  • It was a touching sight.这是一幅动人的景象。
  • His letter was touching.他的信很感人。
5 beads 894701f6859a9d5c3c045fd6f355dbf5     
n.(空心)小珠子( bead的名词复数 );水珠;珠子项链
参考例句:
  • a necklace of wooden beads 一条木珠项链
  • Beads of perspiration stood out on his forehead. 他的前额上挂着汗珠。
6 plank p2CzA     
n.板条,木板,政策要点,政纲条目
参考例句:
  • The plank was set against the wall.木板靠着墙壁。
  • They intend to win the next election on the plank of developing trade.他们想以发展贸易的纲领来赢得下次选举。
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TAG标签:   SSS  radiation
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