CN203631038U - A single slit diffraction experimental instrument with variable angles - Google Patents
A single slit diffraction experimental instrument with variable angles Download PDFInfo
- Publication number
- CN203631038U CN203631038U CN201320894908.2U CN201320894908U CN203631038U CN 203631038 U CN203631038 U CN 203631038U CN 201320894908 U CN201320894908 U CN 201320894908U CN 203631038 U CN203631038 U CN 203631038U
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- slit
- iron plate
- variable angles
- experimental instrument
- single slit
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Abstract
A single slit diffraction experimental instrument with variable angles belongs to the field of university physical teaching experiment apparatuses. The single slit diffraction experimental instrument with the changeable angles is mainly composes of a slit with variable angles, a screen and a laser pen. The single slit diffraction experimental instrument with the variable angles is characterized in that the slit with the variable angles is composed of two identical surface-smooth lightproof straight cylinder rods, of which one ends are against each other and the other ends are respectively fixed with iron sheets. The slit with the variable angles is vertically fixed a flat iron plate which is disposed horizontally through a bar-shaped magnet. The screen is vertically fixed on one end of the iron plate which is disposed horizontally, so that the other end, which is absorbed through the magnet on the flat iron plate disposed horizontally, is enabled to be vertically fixed on a straight rod of bar shaped steel materials, and that light emitted by the laser pen can shoot the center of the screen is satisfied. The unique feature of the single slit diffraction experimental instrument with the variable angles of the utility model of the patent is that the unique feature of the single slit diffraction experimental instrument with the variable angles is different from single slit diffraction experimental instruments in the prior art; phenomenon that under the same slit, as for same-level diffraction fringes, diffraction angles become small as slit widths increase are obtained. The conception is ingenious; the manufacturing is very simple; the effect is obvious; and more educational functions can be increased if the single slit diffraction experimental instrument with the variable angles is promoted in teaching.
Description
Technical field
The utility model patent relates to the diffraction experiment by narrow opening instrument of demonstrating a kind of varied angle, belongs to college physics teaching experimental apparatus field.
Background technology
In course of University Physics, fraunhofer single slit diffraction is one of important content in college physics teaching, its application is more extensive, as Young modulus for measuring metal etc., in order to make the understanding of student to slit diffraction, the slit (slit is wide) that people have designed in laboratory conventional different in width discrete or that continuously change carries out single slit diffraction experiment, also the width of the single-slit diffractometer that has patent CN00200751.7 design light by the changing slit bright dipping namely width of slit tested, etc., currently available technology, all can not realize a single low-power light source and on same screen, compare the impact of seam width on diffraction pattern simultaneously, and make the problems such as complicated, how to realize and being skillfully constructed, simple, cost is low, be convenient to the new experiment of student's exploratory development, this patent will address this problem.
Summary of the invention
The utility model patent is the physics demonstration experiment instrument that solves a kind of some features of more profoundly demonstrating single slit diffraction of using under classroom or class, solves emphatically single light source, same slit is realized the technology of single slit diffraction seam width on angle of diffraction impact.
The utility model patented technology scheme: a kind of diffraction experiment by narrow opening instrument of varied angle, mainly formed by varied angle slit, screen, laser pen, bar-shaped magnet, black iron plate, it is characterized in that: varied angle slit is to be close together by one end of two light tight straight cylinder bars of identical smooth surface (an opaque-plastic shell), the other end is fixed respectively an iron plate and is formed, hold iron plate with a bar-shaped magnet again, varied angle slit is vertically fixed on by bar-shaped magnet on the black iron plate of horizontal positioned; Screen is vertically fixed on one end of the black iron plate of horizontal positioned, laser pen tail end (other end of light hole) is fixed a magnet, make laser pen pass through magnet absorption (fixing) at the other end of the black iron plate of horizontal positioned vertically on the fixing upright bar of bar shaped steel, and meet the light that laser pen sends and can be mapped in screen center by varied angle slit.
When experiment, adjust the position of varied angle slit between screen and laser pen, then regulate the position of laser pen on straight-bar,, on screen, there is obvious clear diffraction pattern to reach laser pen LASER Light Source directive varied angle slit in angle (slit subtended angle) size that changes varied angle slit.When the angle of varied angle slit (1) is zero, regulate seam wide, be exactly single seam (slit is wide) diffractive situations that we know.
Can see, when the angle of varied angle slit is non-vanishing, it is narrow that diffraction pattern stitches narrow direction central diffraction disk near the wide direction of seam, along with wide the diminishing of seam, under same slit, just can show that like this diffraction fringe at the same level is along with stitching the wide increase angle of diffraction phenomenon that diminishes at the striped distance center at the same level of central fringe both sides.Contribute to single slit diffraction formula to understand, increase interestingly, novelty, excites the desire of exploration, and visual pattern is easy to comparative study, can also quantitative measurment research.
Its unique distinction of the utility model patent is unlike the prior art, realize and under same slit, just can show that diffraction fringe at the same level, along with the wide increase angle of diffraction of the seam phenomenon that diminishes, is skillfully constructed, made extremely simple and easy, successful, in teaching, promotion conference increases more educational function.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the utility model patent.Wherein: (1) is varied angle slit, and (2) are screens, and (3) are laser pens, and (4) are bar-shaped magnets, (5) are black iron plates, and (6) are iron plates, and (7) are magnets
Embodiment
As accompanying drawing: a kind of diffraction experiment by narrow opening instrument of varied angle, mainly by varied angle slit (1), screen (2), laser pen (3), bar-shaped magnet (4), black iron plate (5) forms, it is characterized in that: varied angle slit (1) is to be close together by one end of two light tight straight cylinder bars of identical smooth surface (an opaque-plastic shell), the other end is fixed respectively an iron plate (6) and is formed, use again a bar-shaped magnet (4) to hold iron plate (6), varied angle slit (1) is vertically fixed on by bar-shaped magnet (4) on the black iron plate (5) of horizontal positioned, screen (2) is vertically fixed on one end of the black iron plate (5) of horizontal positioned, laser pen (3) tail end (other end of light hole) is fixed a magnet (7), make laser pen (3) by magnet (7) absorption (fix) the other end of the black iron plate (5) of horizontal positioned vertically the fixing upright bar of bar shaped steel (8) go up, and meet light that laser pen (3) sends and can be mapped in screen (2) in the heart by varied angle slit (1).
When experiment, adjust the position of varied angle slit (1) between screen (2) and laser pen (3), then regulate the position of laser pen (3) on straight-bar (8), change angle (slit subtended angle) size of varied angle slit (1), to reach laser pen (3) LASER Light Source directive varied angle slit (1) at the obvious clear diffraction pattern of the upper appearance of screen (2).When the angle of varied angle slit (1) is zero, regulate seam wide, be exactly single seam (slit is wide) diffractive situations that we know.
Described in this patent, varied angle Gap theory also can be realized by additive method mode, and as replaced straight cylinder bar etc. with ruler, and distortion on this patent basis all belongs to this patent protection domain.
Claims (1)
1. the diffraction experiment by narrow opening instrument of a varied angle, mainly formed by varied angle slit (1), screen (2), laser pen (3), bar-shaped magnet (4), black iron plate (5), it is characterized in that: varied angle slit (1) is to be close together by one end of two light tight straight cylinder bars of identical smooth surface, the other end is fixed respectively an iron plate (6) and is formed, use a bar-shaped magnet (4) to hold iron plate (6), varied angle slit (1) is vertically fixed on by bar-shaped magnet (4) on the black iron plate (5) of horizontal positioned again; Screen (2) is vertically fixed on one end of the black iron plate (5) of horizontal positioned, laser pen (3) tail end is fixed a magnet (7), vertically the fixing upright bar of bar shaped steel (8) is upper to make laser pen (3) be adsorbed on the other end of black iron plate (5) of horizontal positioned by magnet (7), and meets light that laser pen (3) sends and can be mapped in screen (2) in the heart by varied angle slit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894908.2U CN203631038U (en) | 2013-12-27 | 2013-12-27 | A single slit diffraction experimental instrument with variable angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320894908.2U CN203631038U (en) | 2013-12-27 | 2013-12-27 | A single slit diffraction experimental instrument with variable angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203631038U true CN203631038U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320894908.2U Withdrawn - After Issue CN203631038U (en) | 2013-12-27 | 2013-12-27 | A single slit diffraction experimental instrument with variable angles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203631038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680275A (en) * | 2013-12-27 | 2014-03-26 | 齐齐哈尔大学 | Variable-angle single slit diffraction experiment instrument |
-
2013
- 2013-12-27 CN CN201320894908.2U patent/CN203631038U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680275A (en) * | 2013-12-27 | 2014-03-26 | 齐齐哈尔大学 | Variable-angle single slit diffraction experiment instrument |
| CN103680275B (en) * | 2013-12-27 | 2016-07-06 | 齐齐哈尔大学 | A kind of diffraction experiment by narrow opening instrument of varied angle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20160706 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |