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Planck’s constant
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Planck length: why string theory is hard to test
Max Planck and the birth of quantum mechanics
Listen to Max Planck's light bulb experiment and the origin of quantum theory
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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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Italian physicist Guglielmo Marconi at work in the wireless room of his yacht Electra, c. 1920.
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Planck’s constant: Facts & Related Content

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Facts

Also Known As Planck constant • h

Videos

Planck length: why string theory is hard to test
Max Planck and the birth of quantum mechanics
Listen to Max Planck's light bulb experiment and the origin of quantum theory
See All Videos →

Related Topics and References

Topics

Key People

Max Planck
Max Planck
German physicist
Robert Millikan
Robert Millikan
American physicist

Related Quizzes and Features

Quiz
Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.
Physics and Natural Law
Italian physicist Guglielmo Marconi at work in the wireless room of his yacht Electra, c. 1920.
All About Physics Quiz