#quantummechanics Timeline

52d

Celebrate the 100th anniversary of #quantummechanics and today's International Day of #Light with us! There will be an extensive programme at various Max Planck Institutes.⬇️ #lightday2025

Two people - Johannes Zeiher and Sebastian Blatt - monitor an experiment at the Max Planck Institute of Quantum Optics. You can see a lot of lasers and blue light. The scientists are wearing glasses. Credit: © Max Planck Institute of Quantum Optics / Munich Quantum Valley

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144d

How Hans Bethe Stumbled Upon Perfect Quantum Theories

Quantum calculations amount to sophisticated estimates. But in 1931, Hans Bethe intuited precisely how a chain of particles would behave — an insight that had far-reaching consequences.

By Matt von Rippel

https://www.quantamagazine.org/how-hans-bethe-stumbled-upon-perfect-quantum-theories-20250212/

More information about Hans Bethe:
https://en.wikipedia.org/wiki/Hans_Bethe

#science #physics #quantummechanics

Hans Albrecht Bethe (1906-2005) being interviewed by journalists.

Bethe, German-American physicist, won the Nobel Prize in physics for his work on the theory of stellar nucleosynthesis

Acc. 90-105 - Science Service, Records, 1920s-1970s, Smithsonian Institution Archives

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74d

#OTD in 1914.

The Franck–Hertz experiment, the first electrical measurement to clearly demonstrate the quantum nature of atoms, was presented to the German Physical Society.

Their experimental results proved to be consistent with the Bohr model for atoms that had been proposed the previous year by Niels Bohr.

https://en.wikipedia.org/wiki/Franck%E2%80%93Hertz_experiment

Niels Bohr at PG:
https://www.gutenberg.org/ebooks/author/44167

#science #physics #quantummechanics