Experimental device for measuring refractive index of glass

Abstract

The invention discloses an experimental device for measuring the refractive index of glass. The experimental device comprises a bottom plate. Vertical plates with opposite side surfaces are fixedly mounted at left and right ends of the top surface of the bottom plate; a horizontal laser emitter is hinged to the top of the inner side face of the vertical plate on the left side. The laser emitter can only rotate on a horizontal plane; a vertical first connecting rod is fixedly installed at the bottom of the laser emitter, a horizontal first telescopic rod is fixedly installed at the bottom of the first connecting rod, and the axis of the first telescopic rod is parallel to laser emitted by the laser emitter. A first guide groove is formed in the center of the top face of the bottom plate, afirst sliding block is installed in the first guide groove, and a first groove is formed in the left side face of the first sliding block. The angle of the first telescopic rod and the angle of a second telescopic rod are measured to obtain an emission angle and a refraction angle. Therefore, the refractive index is calculated, and the drawing time of students is reduced; the measured angle is more accurate; the operational ability and the reaction ability of students can be exercised in the process of finding out refracted light by moving the baffle, so that the enthusiasm of students is improved.

Description

technical field [0001] The invention belongs to the field of optical refractive index measuring devices, in particular to an experimental device for measuring the refractive index of glass. Background technique [0002] At this stage, the experimental device for measuring the refractive index of glass in ordinary high school physics is relatively simple. Insert a pin through naked eye observation, then draw the line of light, measure the incident angle and refraction angle through a protractor, and then calculate the refractive index. This method is used for the device It is simple and the algorithm is simple, but the error in the experiment process is relatively large, and it is time-consuming, which affects the enthusiasm and rigor of students. Contents of the invention [0003] The invention provides an experimental device for measuring the refractive index of glass to solve the defects in the prior art. [0004] The present invention is achieved through the following ...

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Problems solved by technology

[0002] At this stage, the experimental device for measuring the refractive index of glass in ordinary high school physics is relatively simple. Insert a pin through naked eye observation, then draw the line of light, measure the incident angle and refraction angle through a protractor, and then calculate the refractive index. This method is used for the device It is simple and the algorithm is simple, but the error in the experiment process is relatively large, and it is time-consuming, which affects the enthusiasm and rigor of students

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