• Newton’s ring apparatus consists of a Plano-convex lens mounted on an optically plane glass plate.
  • This entire assembly is mounted in a circular heavy duty metal frame.
  • The pressure between the plates can be adjusted by three brass plated nickel screws.
  • This simple apparatus nicely demonstrates Newton’s rings, which are created by the reflection of light between two surfaces, and forms for one of the basic experiments at graduation level.
  • When viewed under monochromatic light, students can observe how these rings appear as a series of concentric, alternating bright and dark rings centered at the point of contact between the two surfaces.
  • Also students can appreciate a concentric ring pattern of rainbow colors, when viewed under white light.


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