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jan 1, 1900 - Max Planck establishes "Planck’s Constant" (6.62607004 × 10-34 m2 kg / s)
Description:
A physical constant that is the quantum of action, central in quantum mechanics
Added to timeline:
12 Oct 2018
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Atomic Model Timeline
Date:
jan 1, 1900
Now
~ 124 years ago