This Doodle celebrates World Quantum Day, an annual celebration that improves understanding of quantum physics and technology. The date, April 14th, represents the first three digits of Planck’s constant, which describes the relationship between the energy and frequency of a quantum of energy (such as a photon): 4.14×10−15 eV·s
Wednesday, April 16, 2025
About World Quantum Day
Monday was World Quantum Day:
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Explanation of Newtonian Time
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They should have made it April 1st!
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