Single-slit diffraction and double-slit interference experiment demonstration integrated device for teaching

Abstract

The invention discloses a single-slit diffraction and double-slit interference experiment demonstration integrated device for teaching. The device comprises a first base and a second base, threaded rods are fixedly connected to the lower end surfaces of the first base and the second base; and the threaded rods are in threaded connection with nut seats correspondingly, the ends, close to each other, of the first base and the second base are fixedly connected with a first connecting plate and a second connecting plate correspondingly, and the first connecting plate and the second connecting plate are in sliding connection through a first sliding groove. In the present invention, by setting the adjusting part and manually poking the rotating ring, the sliding columns slide in the arc-shaped sliding grooves, and meanwhile the sliding columns slide in the sliding rails to drive the fan-shaped baffles to move until the six fan-shaped baffles are matched with one another to be closed or completely opened, so that the device has a good demonstration effect, and the single-slit diffraction and double-slit interference process and change of light can be displayed vividly.

Description

technical field [0001] The invention relates to the technical field of teaching demonstration tools, in particular to an integrated device for teaching demonstration of single-slit diffraction and double-slit interference experiments. Background technique [0002] Single-slit diffraction is a phenomenon in which light waves encounter obstacles during propagation, and light waves will continue to propagate around obstacles. Diffraction is most pronounced when the wavelength is comparable to or larger than the size of the slit, hole or obstacle. Double slit interference is to project parallel monochromatic light onto a baffle with two slits. The slits are very close to each other. The same wave sources are called coherent wave sources, and the light emitted by them superimposes on each other in the space behind the baffle, and interference occurs. [0003] Both single-slit diffraction and double-slit interference are an important knowledge point in physics, and they are also...

AI Technical Summary

Problems solved by technology

[0003] Both single-slit diffraction and double-slit interference are an important knowledge point in physics, and they are also relatively basic physical experiments in the process of physics teaching. The discussion of the law of light intensity distribution and spacing is an important and difficult point. Most of them focus on qualitative observation, that is, using laser light as the light source, directly irradiating the single-slit or double-slit device, and then using the human eye to observe on the observation screen. The existing demonstrator is not easy to promote in classroom teaching, and it is inconvenient to demonstrate. Affect the experimental effect

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