Newton's Rings Experiment

This set allows for introducing the phenomenon of localized interferences through the observation of Newton's rings. Consisting of a flat plate and a slightly curved plate, the device creates a path difference between the 2 reflections. The additional Measurements 202773 complement enriches the number of feasible experiments. Topics covered: - Interferences by amplitude division - Localized interferences - Rings by transmission - Rings by reflection Principles and objectives: The Newton's rings are obtained through localized interferences (occurring within a surface S, as opposed to non-localized interferences occurring in the volume where two coherent beams overlap) using the following device composed of a flat plate and a weakly converging plano-convex lens. The set forms an air wedge. The device is illuminated with a monochromatic beam, normal to the flat diopters. Since the diopters are reflective, each of them reflects a portion of the radiation, while the rest is transmitted. The produced interferences are called localized because they are observable within a well-defined surface and can be observed in reflection or transmission.

Composition:
 ▪ 1 prism bench of 1.5 m with adjustable feet set (ref.202518)
 ▪ 4 standard prism clamps (ref.202234) and 1 transverse prism clamp (ref.202392)
 ▪ 2 optical feet (ref.203213)
 ▪ 1 spectral power supply (ref.204315)
 ▪ 1 E27 Sodium spectral bulb (ref.204092) and 1 E27 bulb housing (ref.203390)
 ▪ 1 Newton Rings system (ref.202425)
 ▪ 1 double condenser (ref.202317)
 ▪ 2 lenses Ø80 mm f+200 mm (ref.203241) in mount (ref.202437)
 ▪ 1 white metal screen with grid 20x20 cm (ref.202368)
 ▪ 1 set of experiments instructions