ABSTRACT

In the college physics experiment, Newton's rings experiment is amplitude interference of medium thick an important instance. According to the Isopach interference principle, the comprehensive analysis of the Newton ring imaging principle and imaging pattern.

Imaging pattern on the basis of Newton’s rings, this paper further analyzes the Newton rings apparatus flat and convex lens curvature radius of the interference ring diameter, the relationship between the application and processing through “gradual deduction method” calculate the plane convex lens curvature radius, and then calculate the uncertainty.

In order to more in-depth understanding of Newton ring experiment, this paper further extends the Newton ring interference pattern in other applications, such as Newton’s rings measuring liquid refractive index, and the measured results in accord with the theoretical value, the determination of Newton’s rings measuring concave and convex lens and optical components on the surface of the standards, and measuring lens focal length and a series of applications, and the development of Newton ring experiment after in the future.

Keywords: Newton's rings; Isopach interference; Radius of curvature; By differential method; Liquid refractive index