WORLD QUANTUM DAY APRIL 14 2025

April 14 2025

Discover the language of the universe

Why April 14?

The World Quantum Day is celebrated on April 14, a reference to 4.14, the rounded first digits of Planck’s constant: 4.1356677×10−15 eV⋅s = 0.000 000 000 000 004 1356677 electron volt second, a product of energy and time that is the fundamental constant governing quantum physics.

Why is Planck’s constant so important? Did you know it is used to define the kilogram? And, otherwise, how does it affect our lives? These are some of the questions, among many others, that will be addressed by the World Quantum Day activities.

And what other dates and numbers do you consider important for Quantum Science and Technology? When was quantum physics first taught in your country? And in your university/school?Check out our Quantum@Calendar project, which aims to record historical quantum events and make every day a quantum day!

https://worldquantumday.org/how-to-engage/

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