德国著名的化学家奥托·哈恩首次披露他发现了核裂变,是在一封写给与他合作过多年、在奥地利出生的犹太籍女物理学家利瑟·迈特的信中。奥托告诉了迈特一个不可思议而又令人震惊的事实:铀原子核可以裂变成更小的物质,其中之一就是钡元素。作为一名放射化学家,奥托希望迈特能应用她在物理方面的知识,解释为什么铀原子核同中子碰撞后,会产生钡。迈特和她的外甥、物理学家弗里施在经过反复实验并与哈恩多次通信交流后得出结论:铀原子核确实发生了裂变。后来哈恩又经过化学实验,证明了这一论断。这一发现最终导致了核反应堆 Otto Hahn, the famous German chemist, disclosed for the first time that he found nuclear fission in a letter written to Lisse Matt, a Jewish female physicist born in Austria who had been with him for many years. Otto tells Matt an incredible and shocking fact that one of the uranium nuclei can fission into smaller substances, one of which is barium. As a radiochemist, Otto wants Matt to apply her physical knowledge to explain why barium is produced when uranium nuclei collide with neutrons. Matt and her nephew, physicist Frisch, after repeated experiments and many communications with Hahn, concluded that uranium nuclei did indeed fission. Later, Hahn and through chemical experiments to prove this assertion. This finding eventually led to the nuclear reactor