The right-hand pattern is a mystery specimen generated with a hidden wavelength Ī» and lens radius of curvature R. Adjust your sliders on the left until your simulated rings match the mystery pattern as closely as possible, then submit your estimate. This mirrors the real experiment, where you infer Ī» (or R) from the measured ring spacing.
Sodium-lamp illuminated, reflected system. Ring spacing encodes λ and R via Dn² = 4nλR.