College physics experiment wedge interference teaching auxiliary adjusting instrument

Abstract

The invention discloses a college physics experiment wedge interference teaching auxiliary adjusting instrument which comprises a supporting assembly, an adjusting assembly and a receiving assembly, the supporting assembly comprises a base of a cuboid structure, supporting plates are fixed to the two ends and the middle of the base, and two guide rails penetrate through the surface of the supporting plate located in the middle; and the two ends of the guide rail are attached to the inner walls of the supporting plates located at the two ends. The adjusting assembly comprises an observation screen support, a wedge device support, a support with a convex lens and a light source support. The surface of the guide rail is slidably sleeved with a linear bearing. The convex lens, the wedge and the observation screen can be accurately positioned; and a teacher or a student does not need to waste time for repeated adjustment, and an operator can enable the instrument to automatically and accurately adjust the positions of the three devices under the control of a single-chip microcomputer under the condition that the resolution of the observation screen and the focal length of the lens are set.

Description

technical field [0001] The invention belongs to the technical field of university physics experiment instruments and devices, and in particular relates to an auxiliary adjustment instrument for teaching of university physics experiments. Background technique [0002] According to the principle of thin-film interference, the flatness of the plane can be measured. The measurement accuracy is very high, and even small ridges or depressions as small as a fraction of a wavelength can be detected from the curvature of the stripes. If two very flat glasses There is a small angle between the plates to form a wedge-shaped air wedge, and the interference fringes produced by the vertical incidence of monochromatic light of known wavelength can be used to measure a small length. [0003] Through the point light source through the convex lens, a parallel light source is given, which is irradiated vertically on the wedge, and then the shape of the interference fringes in the transmitted l...

AI Technical Summary

Problems solved by technology

[0004] During the teaching process, students need to adjust four devices including the light source, convex lens, wedge, and observation screen, and the positions of the four experimental devices will affect each other, making it difficult to observe the experimental phenomenon normally.

It takes too long to adjust the image of the tip, the focal length cannot be accurately grasped, and it is not conducive to the development of teaching activities. Students often say that they are easy to be nervous and messy with the instrument, resulting in damage to the instrument

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