Light reflection and refraction experimental instrument

Abstract

The invention relates to a light reflection and refraction experimental instrument. The instrument is a transparent hollow sphere with holes; a plurality of vertical circles are marked on the surface of the sphere; the vertical circles are formed in a way that a vertical surface passing through the sphere centre are tangent to the surface of the sphere; the vertical diameters of the plurality of vertical rings are all coincided with the vertical diameter of the hollow sphere; a plurality of horizontal circles are marked on the sphere surface; the horizontal circles are formed in a way that a horizontal surface is tangent to the sphere surface in the process of moving upwards and downwards; degrees for indicating sizes of incident angles, reflective angles and refractive angles are marked on the horizontal circles. The invention has the following beneficial effects that the students can independently learn the real connotation of ''three lines on the same plane'' by means of the vertical circles in a vivid and direct three-dimensional form without mechanically imaging the ''three lines on the same plane'' by the explanation of teachers from an indirect angle, and therefore, the students can easily understand the connotation of ''three lines on the same plane''; and the angle size can be read from the horizontal circles, so that the invention successfully enables the experiment to be transferred from the replication experiment to the Investigation experiment.

Description

Technical field [0001] The invention relates to a teaching instrument, in particular to an experimental instrument used for light reflection and light refraction in junior high school physics. Background technique [0002] Existing junior middle school physics experiments on light reflection and refraction, as well as a large number of modification experiments, can only be experiments in one plane, and students are required to explore the law through experiments: "the reflected light and the incident light , normal on the same plane", "refracted light and incident light, and normal on the same plane", students cannot explore in three-dimensional space, and it seems very far-fetched to draw the above conclusions. Contents of the invention [0003] The object of the present invention is to provide an experimental instrument capable of exploring the laws of light reflection and refraction in three-dimensional space. [0004] The technical solution adopted in the present inve...

AI Technical Summary

Problems solved by technology

[0002] Existing junior middle school physics experiments on light reflection and refraction, as well as a large number of modification experiments, can only be experiments in one plane, and students are required to explore the law through experiments: "the reflected light and the incident light , normal on the same plane”, “refracted light and incident light, and normal on the same plane”, it is impossible for students to explore in a three-dimensional space. It seems very far-fetched to draw the above conclusions

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