Meaning of Newton's rings

New'ton's rings'

Pronunciation: [key]
— Optics. Optics.
  1. the pattern of light interference produced by the contact of the convex surface of a lens with a plane glass plate, appearing as a series of concentric, alternately bright and dark rings, which are colored if the light source is white.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.