Definitions

1. noun

A unit of energy in atomic physics, equal to the energy of an electron in a hydrogen atom when its principal quantum number is n.

“The Rydberg constant is used to calculate the energy levels of an atom.”

2. proper noun

A Swedish physicist who developed the Rydberg formula, a mathematical expression to calculate the energy levels of atoms.

“The Rydberg formula is named after Johannes Rydberg.”