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从英国化学家和物理学家道尔顿(J.John Dalton,1766~1844)创立原子学说以后,很长时间内人们都认为原子就像一个小得不能再小的玻璃实心球,里面再也没有什么花样了.从1869年德国科学家希托夫发现阴极射线以后,克鲁克斯、赫兹、勒纳、汤姆逊等一大批科学家研究了阴极射线,历时20
After the atomic doctrine was founded by the British chemist and physicist J. John Dalton (1766-1844), for a long time people thought the atom was like a small, solid glass ball, There is no tricks.From the 1869 German scientist Hitov discovered cathode ray, the Crooks, Hertz, Lerner, Thomson and a large number of scientists studied the cathode ray, which lasted 20