化学有故事08:敲开原子坚硬的外壳
· 28 min · Episode 44
Episode 化学有故事08:敲开原子坚硬的外壳
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27:58
【化学有故事】加更了!上一集发布在2023年2月,欢迎回顾~
原子真的是坚不可摧的实心小球吗?19世纪末,贝克勒尔无意中发现铀盐能自己发出射线;居里夫人则用四年时间,从成吨的矿渣里炼出微量的镭,证明了原子内部在持续释放能量。而卢瑟福的α粒子实验更令人震惊——大多数粒子穿过了薄薄的金箔,却有极少数像撞上铁壁般弹了回来。这揭示了一个颠覆认知的事实:原子内部绝大部分是空的,所有质量都集中在极小的原子核里。从此,那个统治了人类两千年的“实心原子”观念,被彻底敲碎了……
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