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虽然每个人对快慢的理解不同,但大家肯定会一致觉得千年已经是很漫长了。而宇宙从诞生至今,已经有137亿年,应该没有比这段时间更漫长的事情了吧?科学家最近发现,一种惰性气体元素氙-136,正在干一件非常非常慢的事儿。这种元素有一种衰变方式,是原子中的2个中子会自发地衰变成2个质子、2个电子和2个反中微子,反中微子是质量几乎为零的中微子的反物质粒子。
Although everyone understands speed, everyone will surely agree that the millennium is already quite long. And since the birth of the universe, there are already 13.7 billion years, there should be no longer longer than this time thing? Scientists recently found that an inert gas element xenon -136, is doing a very, very slow thing. One such decay of this element is that two neutrons in an atom decay spontaneously into two protons, two electrons and two anti-neutrinos, which are neutrinos of almost zero mass Antimatter particles.