XXth century_physics
XXth century_physics XXth century_physics
In the ”plum-pudding” model of J. J. Thomson scattering of alpha-particles occurs predominantly at very small angles Scattering of alpha-particles at large angles gives evidence of the large central charge, the atomic nucleus (Rutherford model)
"I am beginning to think that the central core is negatively charged, for otherwise the law of absorption for beta rays would be very different from that observed...” Letter to William Henry Bragg, February 9, 1911 "The scattering of the electrified particles is considered for a type of atom which consists of a central electric charge concentrated at a point and surrounded by a uniform spherical distribution of opposite electricity equal in amount." Abstract of a paper read before the Society on March 7, 1911. Proc. Manchester Literary and Philosophical Society, IV, 55, 18.
- Page 1 and 2: Physics of the XX th century Part 1
- Page 3 and 4: Physics of the atom and the path to
- Page 5 and 6: Hantaro Nagaoka Nagaoka's atomic mo
- Page 7 and 8: Robert Millikan (1868-1953 (1868 19
- Page 9 and 10: Charles Glover Barkla (1877-1944) d
- Page 11 and 12: John William Nicholson (1911): atom
- Page 13 and 14: Accelerated electric charge radiate
- Page 15 and 16: Attenuation of radiation for rings
- Page 17 and 18: Solvay Conference 1913
- Page 19 and 20: H. Geiger - On the Scattering of th
- Page 21: Proc. Roy. Soc. 82, 495 (1909)
- Page 26 and 27: "Consider an atom which contains a
- Page 28 and 29: ”...considering the enormous vari
- Page 30 and 31: ”The wavelengths of the first fou
- Page 32 and 33: Spectral lines were seen as manifes
- Page 34 and 35: In the Bohr’s model spectral line
- Page 36 and 37: Bohr found excellent description of
- Page 38 and 39: Periodic system of elements accordi
- Page 40 and 41: Periodic system of elements accordi
- Page 42 and 43: Intra-atomic Charge ”Now, accordi
- Page 44 and 45: H. G. J. Moseley, Phil. Mag. 26, 10
- Page 46 and 47: ”We have here a proof that there
- Page 48 and 49: James Franck Gustav Hertz Franck-He
- Page 50 and 51: James Franck Gustav Hertz ”...it
- Page 52 and 53: Wojciech (Adalbert) Rubinowicz (188
- Page 54 and 55: Solvay Conference 1921
- Page 56 and 57: Arthur Holly Compton (1892-1962) Co
- Page 58 and 59: Compton’s data [(Phys. Rev.19, 26
- Page 60 and 61: Compton effect
- Page 62 and 63: The crisis of the quantum theory
- Page 64 and 65: Louis de Broglie
- Page 66 and 67: Clinton Davisson and Lester Germer
- Page 68 and 69: George P. Thomson Electron diffract
- Page 70 and 71: Important dates in the development
- Page 72 and 73: Heisenberg to Pauli (July 9, 1925)
In the ”plum-pudding” model of<br />
J. J. Thomson scattering of<br />
alpha-particles occurs<br />
predominantly at very small<br />
angles<br />
Scattering of alpha-particles at<br />
large angles gives evidence of<br />
the large central charge, the<br />
atomic nucleus (Rutherford<br />
model)
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