Single-slit diffraction experimental device of laser pen light source
A single-slit diffraction and experimental device technology, applied in educational appliances, instruments, teaching models, etc., can solve the problems of complex structure, unsuitable for students' experimental instruments, high price, etc., and achieves low cost, safe and reliable site restrictions, and simple structure. Effect
Inactive Publication Date: 2009-12-02
上海市嘉定区第二中学
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Problems solved by technology
[0003] 1. Using white light as the light source, the structure is more complicated;
[0005] Neither of these two schemes is suitable as a student experimental instrument
Method used
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Embodiment
[0015] 1) The laser pointer is a red laser pointer with a power of 10nW.
[0016] 2) The bracket is made of plastic at one time, the height is 20cm, the inner diameter of the cylinder is 1cm, and the wall thickness of the cylinder is 1mm.
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The invention discloses a single-slit diffraction experimental device of a laser pen light source, which comprises the laser pen, a magnetic ring, a bracket (provided with a cylinder) and two single-slit pieces, wherein the laser pen is inserted in the cylinder at the upper end of the bracket; the magnetic ring is stuck on a lightening hole of the laser pen; and the single-slit pieces are made of ferric materials and adsorbed at the tail end of the laser pen in the experiment. The invention has the advantages of safety, reliability, low cost, and the like and is suitable for the grouping experiment of students.
Description
Technical field: [0001] The invention relates to a physics teaching instrument, in particular to a single-slit diffraction experimental device for a laser pointer light source. Background technique: [0002] In high school physics teaching, the single-slit diffraction of light is both the focus and the difficulty of teaching, and the best way to break through this teaching difficulty is to do a good single-slit diffraction experiment of light. There are two schemes for existing single-slit diffraction experiments: [0003] 1. Using white light as the light source, the structure is more complicated; [0004] 2. To use helium-neon laser as light source, 220V power supply must be used and the price is expensive. [0005] These two schemes are not suitable as experimental equipment for students. Invention content: [0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a single-slit diffraction experiment device suitable for...
Claims
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IPC IPC(8): G09B23/22
Inventor 蔡文学姚成兴董洁婷周礼邦
Owner 上海市嘉定区第二中学