Monday, February 22, 2010

Einstein Aces New Test, Scoring at least 99.999999%

UC Berkley announced yesterday the results of the most precise test of Einstein’s Theory of General Relativity ever accomplished. Professor Holger Muller’s experiment confirms Einstein’s prediction that the passage of time is slowed down by gravity. Muller’s measurement matches Einstein’s prediction to better than 1 part in 100 million, which is the limit of the experiment’s precision and is 10,000 more accurate than any prior measurement.

To achieve this extraordinary accuracy, Muller cooled cesium atoms to a few millionth of a degree above absolute zero (-455oF) and “tossed” half of them up 4/1000ths of an inch. In the 1/3 of a second it took the elevated atoms to fall back down, they “aged” 20,000 trillionths of a trillionth of a second more than did their stationary siblings. Muller was able to measure that infinitesimal difference to an astonishing 0.000,1 of a trillionth of a trillionth of a second, using an atom interferometer

Einstein Theory of General Relativity is the foundation of our scientific understanding to the universe, the big bang, and black holes. It is also essential to GPS, the Global Positioning System that many of us have in our cars. If not corrected for the slowing of time due to gravity as Einstein explained, GPS readings would drift by 6 miles per day – if GPS got you home on Monday, you’d be in the next town on Tuesday, and possibly out to sea by Friday.

Find out more about gravity and time on my radio shows "Hey, Einstein, What Time Is It?" and "Gravity and the 3 R's" on my website: www.guidetothecosmos.com.

Muller feels he can do even better, and has already started building a more precise experiment.

37 comments:

  1. Time slowed down by gravity.
    can you help me understand this concept a little better?

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  2. 一定要保持最佳狀況呦,加油!!!期待你發表的新文章!........................................

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  3. 一個人就像一個分數,他的實際才能是分子,他對自己的評價是分母。分母越大,則分數的價值越小。..................................................

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  4. 愛情是一種發明,需要不斷改良。只是,這種發明和其他發明不一樣,它沒有專利權,隨時會被人搶走。..................................................................

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  5. 向著星球長驅直進的人,反比踟躕在峽路上的人,更容易達到目的。..................................................................

    ReplyDelete
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  7. 向著星球長驅直進的人,反比踟躕在峽路上的人,更容易達到目的。............................................................

    ReplyDelete
  8. 過去的事早已消失,未來的事更渺不可知,只有現在是真實的................................................

    ReplyDelete
  9. 婚姻對男人來說是賭他的自由,對女人而言卻是賭她的幸福。.................................................................

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  10. 成功多屬於那些很快做出決定,卻又不輕易變更的人。而失敗也經常屬於那些很難做出決定,卻又經常變更的人.................................................... ............

    ReplyDelete