Energy level

Heard in 2 episodes across 2 shows since Jan 2026

An energy level is a discrete, quantized value of energy that a spatially bound quantum mechanical system or particle, such as an electron in an atom, can possess. Unlike classical particles which can have a continuous range of energy, bound quantum systems are restricted to these specific states. The concept is fundamental in quantum mechanics, atomic physics, and chemistry for describing the behavior of electrons, molecules, and atomic nuclei.