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Johannes Rydberg
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Balmer series of hydrogen spectral lines
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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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Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
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Johannes Rydberg: Media

Swedish physicist
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Balmer series of hydrogen spectral lines
The Balmer series of atomic hydrogen. These spectral lines are emitted when the electron...
Photo: Arthur L. Schawlow, Stanford University, and Theodore W. Hansch, Max Planck Institute for Quantum Optics; Scale: Encyclopædia Britannica, Inc.
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