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词汇
卢瑟福粒子散射实验
释义
卢瑟福粒子散射实验
lú sè fú lì zǐ sǎn shè shí yàn
由卢瑟福等人所做的α粒子穿透金属薄膜后向各个方向散射的实验。之前汤姆生认为中性原子中的等量正负电荷均匀分布在原子内。1911年卢瑟福用带正电的α粒子轰击金属薄膜,发现不同散射角度的粒子数目不一,经分析,他认为原子由带正电的很小的原子核与核外电子组成,提出了原子的行星模型。
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更新时间:2025/11/13 12:33:14