Light, Wave & Sound

Newton’s rings plate NR-MN

D20-1841-W0

【Product Description】

“Newton’s rings plate” is a set that consists of a plano-convex lens being placed on top of a flat lens (glass) to observe the interference pattern of monochromatic light.

【Overall Advantages to Users】

  • Easy to start the observation immediately because the plano-convex lens and the flat lens are already preset.
  • The plano-convex lens and the flat lens are produced and polished by precision optical manufacturing process. Because the plano-convex lens must have very slightly curved surface and the flat lens must have very smooth surface.
  • The interference pattern can be observed on the wider area of the lens which is from the center to near the edge of the lens.
  • The plano-convex lens has a radius of curvature ten (10) meters.

【Keywords】

  • Newton’s ring plate
  • Interference pattern
  • Constructive interference
  • Destructive interference
  • Bright fringes form
  • Dark fringes form
  • Monochromatic light

Benefit

Specifications

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【To all users】

  • There is a slight air gap between the plane-convex lens and the flat lens, and the length of its gap can be measured by the interference pattern using a monochromatic light such as Sodium light.
  • After the length of the gap is obtained, an unknown light wave can be measured using the distance of the gap.

【To teachers】

  • The alternating pattern of the bright and the dark fringes appear on the lens using monochromatic light.
  • In case of observation using the reflection light of monochromatic light on the lens, the pattern that occurs is dark fringe at the center of the ring and it will form an alternating pattern of dark and bright fringes.
  • In case of observation using the transmitted light, the pattern that occurs is bright fringe at the center of the ring and it will form an alternating pattern of bright and dark fringes.
  • Size: φ104mm
  • Diameter of lens: 80mm, effective diameter: 70mm
  • Radius of curvature: 10m
  • Accessories: Metal frame, Adjustment screws, Storage case

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