-Instrument Introduction

Interference fringes are formed by the interference of reflected light from the upper and lower surfaces of materials such as thin films/air gaps with uniform thickness and refractive index when incident with nearly parallel light. The same interference fringes are formed where the thickness of the film/air gap is the same, hence it is called equal thickness interference. In addition to studying typical Newton's rings andIn addition to wedge-shaped plate interference, some variations of Newton's ring devices, such as elliptical and hyperbolic interference fringes formed by orthogonal cylindrical mirrors, have also been studied.

-Can conduct experiments