Abstract
After his last visit to Pasadena and Mount Wilson and the problematic return to Groningen in January 1915, Kapteyn was almost 64.
I couldn’t claim that I was smarter than sixty-five other guys
– but the average of sixty-five other guys, certainly!
Richard Phillips Feynman (1918–1988)
One has to be unselfish to a certain extent...
if only out of selfishness.
Marie von Ebner-Eschenbach (1830–1916)
The quote is from Richard Feynman’s Surely you’re joking, Mr. Feynman!.
Marie von Ebner-Eschenbach was an Austrian writer.
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Notes
- 1.
For readers with a physics background: what counts is the difference of the attraction over a relatively small distance. Gravitation is inversely proportional to the square of the distance, but the tidal effect is then inversely proportional to the third power. This means a relatively large effect over a small distance. This third power is also why the influence of the Sun is less than that of the Moon.
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van der Kruit, P.C. (2021). Statistics and Other Concerns. In: Pioneer of Galactic Astronomy: A Biography of Jacobus C. Kapteyn. Springer Biographies. Springer, Cham. https://doi.org/10.1007/978-3-030-55423-1_10
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DOI: https://doi.org/10.1007/978-3-030-55423-1_10
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