Definition of Newton's rings in English:

Newton's rings

plural noun

  • A set of concentric circular fringes seen around the point of contact when a convex lens is placed on a plane surface (or on another lens), caused by interference between light reflected from the upper and lower surfaces.

    • ‘Were the other encasements without Newton's rings still sealed?’
    • ‘A typical example is the existence of alternating bands of light and darkness, which, ironically enough, had been exhibited by Sir Isaac himself in a phenomenon called Newton's rings.’
    • ‘If the film is not held tightly against the paper, the results will be disappointing because the print will either be out of focus or show Newton's rings.’
    • ‘The question on Newton's rings was repeated from last year.’