XXth century_physics

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Spectral lines were seen as manifestation of the harmonic vibrations within atoms. Johnstone Stoney suggested that it is more convenient to use 1/λ ~ ν harmonic frequencies ν = k ν 0
Combination principle: One can determine from experimental values measured on a particular atom, a series of numbers T n called spectral terms, such that every wavenumber corresponding to a spectral line of this atom is equal to the difference of two spectral terms 1/λ nm = T n - T m Walter Ritz Law of Series Spectra, Astrophysical Journal 28, 237 (Oct. 1908) (used by Niels Bohr in his 1913 paper on the constitution of atoms)
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 24 and 25: In the ”plum-pudding” model of
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 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)
Page 74 and 75: ”It is well known that the formal
Page 76 and 77: ”In this communication I wish fir
Page 78 and 79: The uncertainty principle
Page 80 and 81: ”I used to take long walks on Sun
Page 82 and 83:
”The fact that the variables used
Page 84 and 85:
”A recent paper by the author may
Page 86 and 87:
"It thus appears that we must aband
Page 88:
Solvay Conference 1930
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XXth century_physics

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