SSS 2008-04-10
时间：2019-01-08 作者：英语课 分类：Scientific American(四)月
This is Scientific American's 60-Second Science, I'm Steve Mirsky, got a minute?
Every Star Trek 1 fan knows there’s matter and antimatter, but why is there apparently 2 so much more matter than antimatter？Scientific American's JR Minkel: "Two recent experiments show something interesting is going on in the Subatomic particle, called Bs Meson. It flips 3 between its matter and antimatter forms 3 trillion times a second, but the flipping 4 isn't quite matching up with the predictions of the standard model of particle physics. We think that in the very early universe, there were almost equal parts matter and antimatter. And universe back then was acting 5 like a giant cauldron spewing particles, lot of energy, lot of particles being made. But a slightly higher chance that the particles would be matter and not antimatter, which the standard model doesn't explain. Now the odd behavior of the Bs Meson could be giving us some clues about why matter won out over antimatter. When large hadron collider goes online in Europe this year, we may finally be able to observe conditions that would really show us what happened in the early universe to make it the way it is today."
See JR's article “Matter,antimatter split hints at physics breakdown 6" at sciam.com.
Thanks for the minute, for Scientific American's 60-Second Science, I'm Steve Mirsky.
- We often go pony-trek in the summer.夏季我们经常骑马旅行。
- It took us the whole day to trek across the rocky terrain.我们花了一整天的时间艰难地穿过那片遍布岩石的地带。
- An apparently blind alley leads suddenly into an open space.山穷水尽，豁然开朗。
- He was apparently much surprised at the news.他对那个消息显然感到十分惊异。
- Larry flips on the TV while he is on vacation in Budapest. 赖瑞在布达佩斯渡假时，打开电视收看节目。
- He flips through a book before making a decision. 他在决定买下一本书前总要先草草翻阅一下。
- Ignore her,she's just acting.别理她，她只是假装的。
- During the seventies,her acting career was in eclipse.在七十年代，她的表演生涯黯然失色。