Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Morse curve representing the potential energy of an anharmonic oscillator as a function of distance between the oscillating entities (the scale herein corresponds to atoms in a hydrogen molecule). Had the shape of this curve been symmetrical (i.e. harmonic oscillator), numerous effects, including the finite thermal conductance of solid bodies, thermal expansion, molecular dissociation and the appearance of combination bands and overtones, could not have been explained
