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计划周到敢为人先早在20世纪30年代初期,美国海军便开始对于利用核能推进潜艇表示出浓厚的兴趣。1934年,埃利克·费米发表了关于核裂变的论文。6年之后即1941年,在埃利克·费米的领导下,美国哥伦比亚大学建成了一座实验用核反应堆。1942年末,美国芝加哥大学利用斯塔格·菲尔德实验反应堆开始了世界上第一次的连续铀裂变产生的连锁反应。其后,美国在花费了大量的人力和财力搜集、制造核裂变物质之后,终于制成了投放在日本广岛的1.5万吨TNT当量的铀原子弹和投放在长崎的2万吨TNT当量的钚原子
Dare to be considerate of the plan Early In the early 1930s, the U.S. Navy began to show its keen interest in using nuclear energy to propel submarines. In 1934, Erik Fermi published a paper on nuclear fission. Six years later, in 1941, under the leadership of Erik Fermi, the University of Columbia built an experimental nuclear reactor. In late 1942, the University of Chicago in the United States began its first continuous chain reaction with uranium fission using the Starfeld Experimental Reactor. Subsequently, after spending a great deal of manpower and financial resources to collect and manufacture nuclear fission materials, the United States finally produced 15,000 tons of TNT-equivalent uranium atomic bombs and 20,000 tons of TNT equivalent plutonium for distribution in Nagasaki. atom