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去年12月,《科技日报》评出了1998年26件世界重大科技新闻,其中有2件是关于反物质的。6月2日探测反物质的阿尔法磁谱仪上天运行;9月欧洲核研究中心建成世界上第一座反物质工厂。反物质的研究已经成为人们关注的热点。那么,什么是反物质呢? 这要从1928年英国物理学家狄拉克的预言说起,他说,宇宙中每一种普通的物质粒子,都有其伴生物——一种与其对应的反粒子。例如,电子——反电子(又称正电子),质子——反质子等,它们两者质量相同而电荷相反。以
In December last year, Science and Technology Daily named 26 world major scientific and technological news in 1998, of which two were about antimatter. On June 2, the alpha-magnetic spectrometer to detect antimatter went up and running. In September, the European Nuclear Research Center built the world's first anti-matter factory. Antimatter research has become a hot spot for people's attention. So, what is antimatter? From the prophecy of British physicist Dirac in 1928, he said that every ordinary material particle in the universe has its companion - an antiparticle . For example, electronic - anti-electron (also known as positron), proton-anti proton, etc., both of them the same quality and opposite charge. To