Newton's rings with laser and Digital Array Camera
Article No: P2220203
PrincipleIn a Newton's rings apparatus, monochromatic light interferes in the thin film of air between the slightly convex lens and a plane glass plate. The wavelengths are determined from the radii of the interference rings.BenefitsThe color of soap bubbles is based on it: interference in thin filmsUse interference optics to determine most subtle differencesElaborate filters make quantitative measurements possibleTasksUse the Newton's rings apparatus, to measure the diameter of the rings at different wavelengths and:determine the wavelengths for a given radius of curvature of the lensdetermine the radius of curvature at given wavelengths.Learning objectivesCoherent lightPhase relationshipPath differenceInterference in thin filmsNewton's ring apparatus