In 1878—before Einstein was born, before quantum mechanics, before we knew that our galaxy was one among many—a well-known physicist named Phillip von Jolly told young Max Planck, a student ...

Planck’s constant, named for physicist Max Planck, is a key quantity in quantum physics. It’s the amount of energy carried by a photon with the frequency of its electromagnetic wave.

That’s pretty much all you need for instruments to determine Planck’s constant to a decent degree of precision, the way that [poblocki1982]’s did. There’s a little more to it, of course ...

Related: 'Stranger Things': How Realistic Are Parallel Worlds? Named for physicist Max Planck, this fundamental physical constant links the amount of energy carried by a photon with its frequency.

The great majority of physicists were skeptical of the young man’s radical theory of light, in which the speed of light was constant, but distance and time were eerily flexible. But Planck saw ...

Planck's constant is a pretty important part of modern physics, but it's also pretty confusing. Maybe you were wondering what it was while reading about the new kilogram definition. Well never ...

The fundamental constants—the speed of light, Planck’s constant, the charge of the electron, etc.—are taken to be fixed in value. But there is no theory to explain the fundamental constants ...