A soap film n 1 33 is contained within a rectangular wire

Last updated: 6/26/2023

A soap film n 1 33 is contained within a rectangular wire frame The frame is held vertically so that the film drains downward and forms a wedge with flat faces The thickness of the film at the top is essentially zero The film is viewed in reflected white light with near normal incidence and the first violet 420 nm interference band is observed 3 00 cm from the top edge of the film