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早期人们有个信念,认为原子是坚硬,不可分的微粒,从公元前400年以来直到1900年这个信念一直未受到任何挑战。1898年第一位描绘原子内部结构的是英国科学家卡文迪许实验室主持人汤姆逊,大家都叫他J.J,他认为原子是某种带正电的园球,而微小的负电子则很松散地散布在里面,就好比糕饼里面的葡萄干一样,每一种元素有不同数目的电子嵌在它的原子里面。到了1907年曾经在卡文迪许实验室做过J .J的助手、新西兰科学家、曼
Early people had a belief that the atom was a hard, inseparable part of the grain, from 400 BC up to 1900 the belief has not been challenged. In 1898, the first artist who described the internal structure of the atom was the British scientist Cavendish Laboratory Host Thomson. Everyone called him JJ. He thought the atom was some kind of positively charged garden ball and the tiny negative electron was very Loosely dispersed inside, like the raisins in the pastry, each element has a different number of electrons embedded in its atoms. To 1907 had done in Cavendish Laboratory JJ’s assistant, New Zealand scientists, Man