NEWTON’S RING APPARATUS WITH TRAVELLING MICROSCOPE

  • This apparatus is especially designed for use in Newton’s ring experiment. The rings can be produced and measured in the space of a few minutes.
  • The entire apparatus is self-contained except for the light source.
  • It consists of a micrometer driven travelling microscope, which is integrated with the Newton’s rings’ set up.
  • An optically worked reflecting glass is mounted above the Newton’s rings’ set up, at an angle of 450.
  • When light from a sodium lamp falls on this glass which is inclined at 45° to the horizontal, it gets reflected, and then falls normally on the convex lens placed over the glass plate.
  • A system of bright and dark concentric circular rings is observed through the travelling microscope which is arranged vertically above the glass plate.
  • The microscope is properly focused so that alternate bright and dark concentric circular rings are observed more clearly.
  • Accurate Measurements are then taken from the precision micrometer of the travelling microscope.
  • Newton`s Ring apparatus is an ideal platform to understand the wave nature of light.
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