| 单词 | to split the atom |
| 释义 | > as lemmasto split the atom f. to split the atom, to cause atomic nuclei to undergo fission. Also figurative. ΘΚΠ the world > matter > physics > atomic nucleus > nuclear fission > cause fission [verb (transitive)] to split the atom1909 fission1947 1909 Busy Man's Mag. Oct. 44/2 He [sc. Professor J. J. Thomson] is known both as ‘The Man of Ion’, and as the man ‘who split the atom’. 1930 D. L. Sayers & ‘R. Eustace’ Documents in Case ii. 262 If anyone goes quietly away into a corner to experiment with high-voltage electric currents, they start a lot of ill-informed rubbish about splitting the atom. 1932 Discovery Mar. 69/2 The problem of splitting the atom is briefly this: given..that at the centre of every atom there is a minute nucleus whose electrical charge fixes the elementary nature of the atom, can we by any agency detach a part of this charge? 1935 ‘J. Guthrie’ Little Country xxi. 335 With the blast of his cornet, Archibald Packer had split the Temmian atom. 1964 M. Gowing Brit. & Atomic Energy 1939–45 18 They bombarded a foil of the metal lithium, disrupting the lithium nuclei which, after combining with incident protons, split into two alpha particles. The experimenters had ‘split’ atoms by artificial means. 1981 Daily Tel. 24 Sept. 16/4 The first scientists to work on ‘splitting the atom’. < as lemmas |
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