Pink Floyd and the roots of Quantum Mechanics

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In this journey towards Heisenberg's matrix formulation of quantum mechanics, here I present the classical theory of dispersion and the microscopic description of the refractive index. This description is in conflict with Bohr's atomic model, which led to the quantum theory of dispersion and set the basis for Heisenberg's breakthrough.



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[References]

∘ Feynman's Lectures on Physics www.feynmanlectures.caltech.edu/I_31.html#Ch31-S2
∘ R. W. Wood, "On the production of a line spectrum by anomalous dispersion, and its application to the `ash spectrum,' Phil. Mag. Series 6 1: 551 (1901)
∘ R. W. Wood, "The anomalous dispersion of sodium vapour," Proc. R. Soc. Lond. 69: 157 (1902)
∘ R. W. Wood, "A quantitative determination of the anomalous dispersion of sodium vapour in the visible and ultra-violet regions," Phil. Mag. Series 6 8: 293 (1904)
∘ R. W. Wood, "Physical Optics," New York:Macmillan (1911)


[Credits]

Flying through the clouds by Eclipse Chasers, free use on Pexels www.pexels.com/video/flying-through-the-clouds-tow…
Newton's Experimentum Crucis by S. Grusche under CC BY-SA 4.0 (saschagrusche.de/)
Refraction by Z. Sándor under CC BY-SA 3.0
Augustin-Louis Cauchy 1901, public domain
Christian Christiansen by Robobix under CC BY-SA 4.0
Niels Bohr, AIP
August Kundt, public domain
Robert W. Wood, public domain
Heinrich Hertz discovering radio waves, public domain
Hendrik Lorentz and one of his classes, AIP
Hendrik Lorentz, public domain
Paul Drude, public domain
Atom spring by Bene under CC BY-SA 3.0
Simple harmonic oscillator by I. Airola under CC BY-SA 4.0
The Sun Rays Bouncing Off the Lake Surface by Y. Shuraev, free use on Pexels www.pexels.com/video/the-sun-rays-bouncing-off-the…
Light refraction, by ajizai, public domain
Rainbow is seen over the falls by S. Zaman, free use on Pexels www.pexels.com/video/a-rainbow-is-seen-over-the-fa…
Absorption spectrum by Almuazi under CC BY-SA 4.0
Light dispersion of a mercury-vapor lamp by D-Kuru under CC BY-SA 3.0 AT


AIP: American Institute of Physics, Emilio Segrè Visual Archives
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CC BY-SA 2.0: creativecommons.org/licenses/by-sa/2.0/deed.en
CC BY-SA 3.0: creativecommons.org/licenses/by-sa/3.0/deed.en
CC BY 3.0: creativecommons.org/licenses/by/3.0/deed.en
CC BY-SA 3.0 AT: creativecommons.org/licenses/by-sa/3.0/at/deed.en
CC BY-SA 4.0: creativecommons.org/licenses/by-sa/4.0/deed.en