Handheld dynamic light wave diffraction demonstration instrument

Abstract

The invention provides a handheld dynamic light wave diffraction demonstration instrument. The handheld dynamic light wave diffraction demonstration instrument comprises an organic glass tube A and an organic glass tube B which are mutually and rotatably connected in a sleeved mode, and further comprises a power pack, a green laser, a red laser, an adjustable slit device, an optical grating location slot, a measuring ruler, a main switch, a red light switch and a green light switch. Two pairs of holes are respectively formed in the sleeved connection position of the organic glass tube A and the organic glass tube B, the two pairs of holes are symmetrically formed, the axis of the two pairs of holes is parallel to the slit direction of the adjustable slit device, and the two ends of an instrument support are inserted into the holes. The measuring ruler is arranged on one side of the organic glass tube B, and light beams of the green laser and light beams of the red laser are projected to the measuring ruler. The handheld dynamic light wave diffraction demonstration instrument has the advantages of being small and exquisite in size, convenient to carry, capable of being used for classroom teaching directly, and convenient and flexible to use due to the fact that a dark area in a classroom can be chosen as the background to conduct demonstration, quantitative measurement can also be achieved, and the measuring ruler can be directly attached to a blackboard through build-in magnetism conveniently.

Description

technical field [0001] The invention relates to a teaching instrument, in particular to a hand-held dynamic light wave diffraction demonstration instrument. Background technique [0002] Optics is an important part of college physics courses. The diffraction characteristic of light is an important knowledge point of the optics part. Since this characteristic is not easy to be understood by students who are in the initial contact, it is considered to promote students' understanding and mastery through live and intuitive classroom experiment demonstrations The diffraction characteristics of light can improve the teaching effect of college physics courses. [0003] At present, there are many optical instruments, but they are bulky and bulky, inconvenient to carry, and require relatively high experimental environmental conditions, such as low light conditions; at the same time, laboratory demonstration teaching cannot guarantee students' experimental results. The progress is th...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many optical instruments, but they are bulky and bulky, inconvenient to carry, and require relatively high experimental environmental conditions, such as low light conditions; at the same time, laboratory demonstration teaching cannot guarantee students' experimental results. The progress is the same as that of the theory class, so as to achieve the organic combination of theory and practice

As far as light wave diffraction is concerned, the existing small hand-held experimental instrument (handheld wave optics demonstrator, patent number: ZL200820122697.X) cannot simultaneously display the diffraction phenomenon of two beams of light waves with different wavelengths, and cannot dynamically test the diffraction fringes when the width of a single slit changes continuously. The changing law of the model can only be demonstrated qualitatively, and cannot be measured and calculated quantitatively to verify the theoretical results

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