A single-slit diffraction experiment demonstration device for physics teaching

Abstract

The invention relates to the field of teaching equipment, in particular to a single-slit diffraction experiment demonstration device for physics teaching, which includes an iron plate on which a variable-angle adjustment mechanism is fixed, and the two sides of the variable-angle adjustment mechanism are respectively equipped with a laser emitter and a projection board , the variable angle adjustment mechanism includes an outer ring and an inner ring coaxially fixed on the column, the lower end of the column is vertically fixed on the iron plate, and a plurality of guide rods are slidably connected to the inner ring, and the end of the guide rod pointing to the center of the inner ring is connected with a Two connecting rods with the same structure, two adjacent connecting rods on the two adjacent guide rods point to the ends of the center of the inner ring and are hingedly connected by a pin shaft, and the inner side of the outer ring is connected with a ring gear. This kind of single-slit diffraction experimental demonstration device for physics teaching can realize the continuous collection of laser projection diffraction images under the condition of continuous change of slit width, and the corresponding diffraction images can be obtained at one time. The operation is simple, the labor load is small, and it is lively and interesting. , help to increase students' interest, very suitable for promotion in 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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