A single slit diffraction experimental demonstration device for physics teaching

Abstract

The invention relates to the field of teaching appliances, and provides a single slit diffraction experimental demonstration device for physics teaching, including an iron plate; a variable angle adjusting mechanism is fixed on the iron plate, a laser emitter and a projection plate are arranged on two sides of the variable angle adjusting mechanism respectively, the variable angle adjusting mechanism comprises an outer ring and an inner ring coaxially fixed on the upright post, the lower end of the upright post is vertically fixed on an iron plate, a plurality of guide rods are slidably connected on the inner ring, one end of the guide rod pointing to the center of the inner ring is movably connected with two connecting rods with the same structure, two adjacent connecting rods on the adjacent two guiding rods are hingedly connected at the ends pointing to the center of the inner ring through a pin shaft, and the inner side of the outer ring is connected with a gear ring. The single slit diffraction experimental demonstration device for physics teaching can realize continuous collection of diffraction image of laser projection under the condition of continuous change of slit width,and the corresponding diffraction image can be obtained at one time. The device has the advantages of simple operation, small amount of labor, vividness and interestingness, and is helpful to improvestudent interest, and is very suitable for popularization in physics teaching.

Description

technical field [0001] The invention relates to the field of teaching appliances, in particular to a single-slit diffraction experiment demonstration device for physics teaching. Background technique [0002] The single-slit diffraction experiment is one of the important contents of basic teaching in universities. It is widely used and has very important application value. At present, in order to facilitate students' understanding of single-slit diffraction, the laboratory is equipped with corresponding experimental equipment, but the current experimental equipment cannot carry out continuous slit width change and corresponding image collection of projection shape, that is, the current experimental equipment operation mode is Intermittent adjustment of the slit width and separate collection of patterns for comparison and analysis, on the one hand, it is more complicated and labor-intensive, on the other hand, it is boring and not conducive to improving students' interest. In...

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Problems solved by technology

At present, in order to facilitate students' understanding of single-slit diffraction, the laboratory is equipped with corresponding experimental equipment, but the current experimental equipment cannot perform continuous slit width changes and corresponding image collection of projection shapes, that is, the current experimental equipment operation mode is Intermittent adjustment of the slit width and separate collection of patterns for comparison and analysis, on the one hand, it is more complicated and labor-intensive, on the other hand, it is boring and not conducive to improving students' interest. In view of this, we propose a single-slit diffraction experiment demonstration device for physics teaching

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