A planck

A group of more than 3 physicists

I just a saw a planck working at our local Starbucks, they were quite angry at themselves.

Planck constant

a fundamental constant, equal to the energy of a quantum of electromagnetic radiation divided by its frequency, with a value of 6.626 × 10⁻³⁴ joule-seconds.

The Planck constant is denoted by a capital H (ℎ).