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Fundamental physics 基础物理学 Antimatter of fact 反物质现状 Researchers at CERN have held on to anti-atoms fora full quarter of an hour 欧洲核子研究中心的研究人员已经让反原子停留了十五分钟。 READERS who were paying attention in their maths classes may recall that quadraticequations often have two solutions, one positive and one negative. 关注数字课的读者们或许会想到二次方程通常会有两个解，一个是正值，一个是负值。 So when, in 1928, a British physicist called Paul Dirac solved such an equation relating to theelectron, the fact that one answer described the opposite of that particle might have beenbrushed aside as a curiosity. 因此在1928年，一个名叫保罗狄拉克的英国物理学家给出了有关电子的一个方程的解，然而事实上，这个结果表达的是一种相反的粒子，这个结果或许会被考虑后舍弃。 But it wasn t. 然而事实并非如此。 Instead, Dirac interpreted it as antimatterand, four years later, it turned up in a realexperiment. 相反，狄拉克将其解释为反物质并且在四年后，在现实的实验中验证了它的存在。 | 
