BBC 新闻讲解 2011-9-29 第 804 期 QIHUI 制作可可英语: BBC 新闻讲解附字幕:中微子超光速代表时光能倒流?(2011-09-29) 第一部分:听力文本 A discovery in the last week has turned physics on its head. A team of scientists have said that they recorded subatomic particles called neutrinos travelling faster than light. No-one thought that was possible. It is a finding that could overturn one of Einstein's long-accepted fundamental laws of the Universe. The finding was made by researchers at Cern in Switzerland and Gran Sasso in Italy. The speed of light is a cornerstone in Einstein's theory of special relativity, which is what gives us the concept of causality: causes precede effects. Among the implications of this challenge to mainstream theory is the fact that it could mean time travel is possible, a hypothesis that has long convinced writers of science fiction. But the experiment has its sceptics. A physicist from the University of Surrey, Jim Al-Khalili, believes that the current consensus is correct and that the light-speed barrier is impossible to surpass. He has tried to pick holes in the methodology of the Cern researchers. So sure is Al-Khalili that they have made an error in their measurements that he has decided to defend the laws of physics by challenging the laws of social convention. Al-Khalili said: "If the Cern experiment proves to be correct... I will eat my boxer shorts on live TV." 第二部分:参考
