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Quote by Jean-Philippe Uzan

“Alpha, known as the fine-structure constant, characterizes the interactions between matter and light. It has been very accurately measured in the laboratory. It is indeed the most precisely measured of all physical constants ... best memorized in the form ~ 1/137.”

Quote by Jean-Philippe Uzan

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Jean-Philippe Uzan

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“The theoretical determination of the fine structure constant is certainly the most important of the unsolved problems of modern physics. We believe that any regression to the ideas of classical physics (as, for instance, to the use of the classical field concept)cannot bring us nearer to this goal. To reach it, we shall, presumably, have to pay with further revolutionary changes of the fundamental concepts of physics with a still farther digression from the concepts of the classical theories.”

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Book:Writings on Physics and Philosophy
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“Sommerfeld's fine-structure theory was generally considered to be excellently and unambiguously confirmed by experiment. Because the theory rested on the foundation provided by Bohr, the experiments were also taken as strong support for his theory of atomic structure.”

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Book:Niels Bohr and the Quantum Atom: The Bohr Model of Atomic Structure 1913-1925
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“Following the path of earlier unificationists, one of Eddington's aims was to reduce the contingencies in the description of nature, for example, by explaining the fundamental constants of physics rather than accepting them as merely experimental data. One of these constants was the fine-structure constant ..., which entered prominently in Dirac's theory and was known to be about 1/137.”

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Book:Quantum Generations: A History of Physics in the Twentieth Century
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“I introduce the subject of fine structure with a mini-calendar of events. ... Winter 1914-15. Sommerfeld computes relativistic orbits for hydrogen-like atoms. Pashcen, aware of these studies, carefully investigates fine structures, .... January 6, 1916. Sommerfeld announces his fine structure formula, citing results to be published by Paschen in support of his answer. February 1916. Einstein to Sommerfeld: "A revelation!" March 1916. Bohr to Sommerfeld: "I do not believe ever to have read anything with more joy than your beautiful work." September 1916. Paschen publishes his work, acknowledging Sommerfeld's "indefatigable efforts.”

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Book:Inward Bound: Of Matter and Forces in the Physical World
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“The bridge between the electron and the other elementary particles is provided by the fine structure constant, a ~ 1/137, as manifested in the factor-of-137 spacings between the classical electron radius, electron Compton radius, and Bohr orbit radius. ... An a-quantized mass-generation grid extends accurately from the electron all the way to the top quark t, and leads to a corresponding a-quantized particle lifetime grid.”

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Book:The Enigmatic Electron: A Doorway to Particle Masses
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