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SSS 2011-05-06

时间:2011-06-04 08:47来源:互联网 提供网友:wanglihong80   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.

Albert Einstein wins again. A new study has confirmed another prediction of his theory of general relativity. The corroboration1 appears online in the journal Physical Review Letters.

Einstein's theory recognizes that massive objects warp2 the very fabric3 of space and time. If the theory is true, then the Earth should stretch the spacetime in which it sits, like a bowling4 ball would deform5 a trampoline. What's more, the Earth's rotation6 should also produce a drag on local spacetime, like a marble spinning in molasses would pull the goop around it.

To measure these minor7 deformations8, scientists sent four gyroscopes into space in a mission called Gravity Probe B. And they found that after circling the Earth some 5,000 times the gyroscopes' angle of spin had changed, ever-so-slightly, in response to the Earth's gravitational pull. Which proves that the old man was right.

Gravity Probe B was first conceived in 1959. And the technology created to make the mission fly has been applied9 in work on the big bang theory—the real theory, not the TV show—and in GPS, which Einstein would have loved, because even a genius can get lost on the highway.


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1 corroboration vzoxo     
n.进一步的证实,进一步的证据
参考例句:
  • Without corroboration from forensic tests,it will be difficult to prove that the suspect is guilty. 没有法医化验的确证就很难证明嫌疑犯有罪。 来自《简明英汉词典》
  • Definitely more independent corroboration is necessary. 有必要更明确地进一步证实。 来自辞典例句
2 warp KgBwx     
vt.弄歪,使翘曲,使不正常,歪曲,使有偏见
参考例句:
  • The damp wood began to warp.这块潮湿的木材有些翘曲了。
  • A steel girder may warp in a fire.钢梁遇火会变弯。
3 fabric 3hezG     
n.织物,织品,布;构造,结构,组织
参考例句:
  • The fabric will spot easily.这种织品很容易玷污。
  • I don't like the pattern on the fabric.我不喜欢那块布料上的图案。
4 bowling cxjzeN     
n.保龄球运动
参考例句:
  • Bowling is a popular sport with young and old.保龄球是老少都爱的运动。
  • Which sport do you 1ike most,golf or bowling?你最喜欢什么运动,高尔夫还是保龄球?
5 deform L9Byo     
vt.损坏…的形状;使变形,使变丑;vi.变形
参考例句:
  • Shoes that are too tight deform the feet.(穿)太紧的鞋子会使脚变形。
  • Ice crystals begin to deform measurably.冰晶就产生某种程度的变形了。
6 rotation LXmxE     
n.旋转;循环,轮流
参考例句:
  • Crop rotation helps prevent soil erosion.农作物轮作有助于防止水土流失。
  • The workers in this workshop do day and night shifts in weekly rotation.这个车间的工人上白班和上夜班每周轮换一次。
7 minor e7fzR     
adj.较小(少)的,较次要的;n.辅修学科;vi.辅修
参考例句:
  • The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
  • I gave him a minor share of my wealth.我把小部分财产给了他。
8 deformations 51f2a68d52c73b316648d414edcdc30f     
损形( deformation的名词复数 ); 变形; 畸形; 破相
参考例句:
  • It would make no difference if the bar deformations were totally inelastic. 如果杆的变形完全是非弹性变形时这也就没有什么区别了。
  • Such readings can reveal longer-period deformations in the earth. 这种读数可以反映地球长周期的形变。
9 applied Tz2zXA     
adj.应用的;v.应用,适用
参考例句:
  • She plans to take a course in applied linguistics.她打算学习应用语言学课程。
  • This cream is best applied to the face at night.这种乳霜最好晚上擦脸用。
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