A plano-convex lens of radius of curvature m rests on an optically flat glass plate…
PHYSICS · Subjective · Fermi University Physics · Optics & Photonics · Interference and diffraction · Interference and diffraction
Optics and Photonics, Ch Multiple-beam interference: thin films, multilayers and the Fabry-Perot etalon
Problem
A plano-convex lens of radius of curvature R=0.600 m rests on an optically flat glass plate and is viewed from above in reflected sodium light (λ=589.3 nm) through an aperture that shows the pattern out to a radius of 8.00 mm from the contact point. Estimate how many dark Newton's rings are visible.