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Ejnar Hertzsprung
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Hertzsprung, c. 1930 A Hertzsprung-Russell diagram plotting stars by absolute magnitude and spectral type, showing regions for main sequence stars, white dwarfs, giants, and supergiants, with color gradients from blue (hot and bright) to red (cool and dim). The Sun is marked along the main sequence.
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Michael Faraday (L) English physicist and chemist (electromagnetism) and John Frederic Daniell (R) British chemist and meteorologist who invented the Daniell cell.
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
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Ejnar Hertzsprung: References & Edit History

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Article History

Type Description Contributor Date
Anniversary information added. Oct 17, 2025
Anniversary information added. Oct 04, 2025
First paragraph modernization. Mar 12, 2024
Add new Web site: Linda Hall Library - Scientist of the Day - Ejnar Hertzsprung. Dec 16, 2021
Add new Web site: The Round Tower - Biography of Ejnar Hertzsprung. Aug 20, 2019
Added Hertzsprung-Russell diagram. Nov 15, 2010
Changed "The Netherlands" to "the Netherlands." Sep 15, 2010
Article added to new online database. Jul 20, 1998
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