1897,Thomson, the discovery of electron meta cathode targe contained"smaller parts 1 and Atom. was in fact divisible the atom was a distributed positively charged mass with an the fruitcake appropriate number of tiny electrons embedded in it
1897, Thomson, the discovery of electron Atom, was in fact divisible and contained “smaller parts.” “plum pudding”model the atom was a distributed positively charged mass with an appropriate number of tiny electrons embedded in it
1911. Rutherford. nuclear model of the atom 了S恩R a tiny central positive core that contained almost all the atom's mass. The nucleus was surrounded by electrons in appropriate number to maintain a balance of electrical charge It was as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you
"It was as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you." 1911, Rutherford, nuclear model of the atom a tiny central positive core that contained almost all the atom’s mass. The nucleus was surrounded by electrons in appropriate number to maintain a balance of electrical charge
1932. Chadwick discovered the neutron complete the basic model of the nuclear atom: a central positively charged nucleus containing protons and neutrons that was surrounded by a neutron discretely organized cloud of p roton orbiting electrons neutron-related nuclear research electron atom si2e≈10-10m nucleus si2e≈5x10-15m http://www2.lucidcafe.com/lucidcafe/library/library.htmlscience
1932, Chadwick discovered the neutron complete the basic model of the nuclear atom: a central, positively charged nucleus containing protons and neutrons that was surrounded by a discretely organized cloud of orbiting electrons. neutron-related nuclear research http://www2.lucidcafe.com/lucidcafe/library/library.html#science
1.人类寻找物质构造基本单元的历程 质子 中子 :公元前4世红 德寞克利特 1914质子1932中子 电子 卢暴福 恰德维克 108年 21年 36年 电子 TOM 1897 1932海森堡 PARTICLE 1803 1911 1913 道尔顿卢瑟福 玻耳 1968夸克」○ QUARK
1. 人类寻找物质构造基本单元的历程
1895, Roentgen, X-ray Causing the sheet to glow was a penetrating form of radiation. He called this unknown radiation X-rays penetrating rays could reveal the meta cathode target internal structure of opaque objects Crookes tube Dec.22.1895
1895 , Roentgen, X-ray Dec.22, 1895 Causing the sheet to glow was a penetrating form of radiation. He called this unknown radiation X-rays. penetrating rays could reveal the internal structure of opaque objects Crookes tube