Planck constant

This universality comes from observing that parameters in the parabolic equation are governed by fundamental physical constants such as the Planck constant and electron mass and charge.

For example, the kilogram is now rooted in the Planck constant of quantum mechanics rather than in ‘Le Grand K’, a platinum-alloy cylinder kept in a vault outside Paris.

“It would be far more simple than with the Planck constant.”

And with a precise measure of the Planck constant, he could validate the results of Dr. Kibble’s work, and vice versa.

Crucially, Avogadro’s constant and the Planck constant are intertwined in the laws of physics.