In newton's ring experiment we should be going to see a large number of rings with their converging radius. But the ring right next to dark fringe is way nearer than 2nd or 3rd which appears to be an exception. Can someone explain is that an error of setup. Or there is a particular reason for that happening?

  • $\begingroup$ Can you edit your question to include a drawing or photo? $\endgroup$ – S. McGrew May 15 '19 at 2:25

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