CN109192025A - A kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating - Google Patents
A kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating Download PDFInfo
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- CN109192025A CN109192025A CN201811173153.0A CN201811173153A CN109192025A CN 109192025 A CN109192025 A CN 109192025A CN 201811173153 A CN201811173153 A CN 201811173153A CN 109192025 A CN109192025 A CN 109192025A
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- inner ring
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- narrow opening
- opening apparatus
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/22—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for optics
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Abstract
The present invention relates to teaching equipment fields, specially a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating, including iron plate, varied angle regulating mechanism is fixed on iron plate, there are laser emitter and projection plate in the two sides of varied angle regulating mechanism respectively, varied angle regulating mechanism includes the outer ring being coaxially fixed on column and inner ring, column lower end is vertically fixed on iron plate, multiple guide rods are slidably connected on inner ring, one end that guide rod is directed toward the inner ring center of circle is lived, and there are two the identical connecting rods of structure for connection, the end point that two adjacent connecting rods on two adjacent guide rods are directed toward the inner ring center of circle is articulated and connected by pin shaft, the inside of outer ring connects rack gear.This kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating, it can be realized the continuity acquisition of the laser projection diffraction image in the case where variation of slit width continuity, corresponding diffraction image once can be obtained, it is easy to operate, the amount of labour is small, vivid and interesting helps to improve the interest of student, is highly suitable for promoting in teaching.
Description
Technical field
The present invention relates to teaching equipment field, specially a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating.
Background technique
Diffraction experiment by narrow opening is important one of the content of university's elementary teaching, is widely used, there is very important application
Value.Currently in order to being convenient for understanding of the student for single slit diffraction, laboratory is equipped with corresponding experiment equipment, but at present
Experiment equipment not can be carried out continuous changes of slit length and project the acquisition of the correspondence image of form, i.e., current experiment equipment behaviour
It is interrupted modulating slit width as mode and individually acquisition pattern is collected comparative analysis, on the one hand the more complicated amount of labour is big,
On the other hand the uninteresting barren interest for being unfavorable for improving student, in consideration of it, it is proposed that a kind of physics teaching single slit diffraction reality
Test apparatus for demonstrating.
Summary of the invention
The purpose of the present invention is to provide a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating, to solve above-mentioned background
The problem of being proposed in technology.To achieve the above object, the invention provides the following technical scheme: a kind of physics teaching single slit diffraction
Experimental demonstration device, including iron plate are fixed with varied angle regulating mechanism on iron plate, and the two sides of varied angle regulating mechanism have sharp respectively
Optical transmitting set and projection plate, varied angle regulating mechanism includes the outer ring being coaxially fixed on column and inner ring, and inner ring is positioned at outer
Circle inside, column lower end are vertically fixed on iron plate, multiple guide rods are slidably connected on inner ring, and guide rod is directed toward inner ring circle
There are two the identical connecting rods of structure for the connection living of one end of the heart, and in two adjacent connecting rods direction on two adjacent guide rods
The end point for enclosing the center of circle is articulated and connected by pin shaft, and the inside fixed-axis rotation of outer ring connects rack gear, and the inner wall of gear ring passes through arc
Shape arm connects at the articulated connection of two adjacent connecting rods on two adjacent guide rods, is connected on column by cantilever and bearing
It is connected to driving mechanism.
Preferably, guide rod is no less than two groups and moves towards arranged at equal intervals along the circumference of inner ring, and is located on inner ring adjacent
Two guide rods between position be fixed with the pin rod with centerline axis parallel.
Preferably, the through slot of arc is offered on arched arm, pin rod is lived in the through slot being connected on arched arm.
Preferably, the driving mechanism on column includes gear, and gear engages connection with gear ring, and has rocking handle on gear.
Preferably, on iron plate perpendicular to being fixed with the sliding rail that section is dove-tail form, sliding rail on the direction of plane where ring stand
On be slidably connected there are two magnet block, and two magnet blocks are located at the two sides of varied angle regulating mechanism.
Preferably, projection plate is fixedly connected on corresponding magnet block by shaft, is hung down on another described magnet block
It is directly fixed with slotted-angle shelving upwards, and the non-emissive end of laser emitter is absorbed and fixed on slotted-angle shelving by magnetic part.
Compared with prior art, beneficial effects of the present invention: being rotated forward or backwards by gear band movable tooth circle, and gear ring is logical
It crosses arched arm to exert a force at the articulated connection of two adjacent connecting rods on two adjacent guide rods, so that on same guide rod
The angles of two connecting rods become larger or become smaller, so as to realize the laser projection diffraction pattern in the case where variation of slit width continuity
The continuity of picture acquires, and corresponding diffraction image once can be obtained, easy to operate, the amount of labour is small；The variation shape of link angle
Formula is novel, and experiment effect is obvious, vivid and interesting, helps to improve the interest of student, is highly suitable for promoting in teaching.
Detailed description of the invention
Fig. 1 is the varied angle regulating mechanism structural schematic diagram in the present invention；
Fig. 2 is the Section A-A viewing angle constructions schematic diagram in Fig. 1.
In figure: 1 iron plate；2 columns；3 outer rings；4 gear rings；5 inner rings；6 connecting rods；7 through slots；8 pin rods；9 arched arms；10 guiding
Bar；11 gears；12 projection plates；13 laser emitters；14 sliding rails；15 magnet blocks；16 slotted-angle shelvings.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, ordinary skill staff person institute obtained without making creative work
There are other embodiments, shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating
Including iron plate 1, varied angle regulating mechanism is fixed on iron plate 1, there are laser emitter 13 in the two sides of varied angle regulating mechanism respectively
With projection plate 12, perpendicular to being fixed with the sliding rail 14 that section is dove-tail form, sliding rail on the direction of 5 place plane of inner ring on iron plate 1
Being slidably connected on 14, there are two magnet blocks 15, and two magnet blocks 15 are located at the two sides of varied angle regulating mechanism, projection plate
12 are fixedly connected on corresponding magnet block 15 by shaft, are fixed with angle steel vertically upward on another described magnet block 15
The non-emissive end of frame 16, laser emitter 13 is absorbed and fixed on slotted-angle shelving 16 by magnetic part.
Varied angle regulating mechanism includes the outer ring 3 being coaxially fixed on column 2 and inner ring 5, and inner ring 5 is located on the inside of outer ring,
Column lower end is vertically fixed on iron plate 1, multiple guide rods 10 is slidably connected on inner ring 5, and guide rod 10 is directed toward the circle of inner ring 5
There are two the identical connecting rod 6 of structure, two adjacent connecting rods 6 on two adjacent guide rods 10 are directed toward the connection living of one end of the heart
The end point in 5 center of circle of inner ring is articulated and connected by pin shaft, and the inside fixed-axis rotation of outer ring 3 connects rack gear 4, the inner wall of gear ring 4
At the articulated connection for connecting two adjacent connecting rods 6 on two adjacent guide rods 10 by arched arm 9, guide rod 10 is many
Arranged at equal intervals are moved towards in two groups and along the circumference of inner ring 5, and the position on inner ring 5 between two adjacent guide rods 10
It is fixed with the pin rod 8 with centerline axis parallel, the through slot 7 of arc is offered on arched arm 9, and the work of pin rod 8 is connected to arched arm 9
On through slot 7 in.
Driving mechanism on column 2 includes gear 11, and gear 11 engages connection with gear ring 4, and has rocking handle on gear 11.
In the present embodiment, when carrying out the demonstration of diffraction experiment by narrow opening, operate as follows:
Step 1: two magnet blocks 15 of adjustment are moved towards at a distance from varied angle regulating mechanism along sliding rail 14, adjust laser
Position of the transmitter 13 on slotted-angle shelving 16, using the magnetic part at the non-emissive end of laser emitter 13 on slotted-angle shelving 16 on move down
It moves or moves left and right, the center throw that the laser rays that the laser emitter 13 enable issues passes through varied angle regulating mechanism exists
The center of projection plate 12；
Step 2: by handle, rotate gear 11, the rotation of gear 11 pass through teeth transmission belt movable tooth circle 4 forward or backwards
It rotates counterclockwise or clockwise, the rotation of gear ring 4 is by arched arm 9 to two adjacent companies on two adjacent guide rods 10
Apply active force at the articulated connection of bar 6, when gear ring 4 rotates counterclockwise, pulling force effect applied to connecting rod 6 by arched arm 9,
And makes mutually to extend between connecting rod 6 under the action of through slot 7 on pin rod 8 and arched arm 9 and open, while outside guide rod 10
It moves, when with the rotation 8 contact arc slot 7 of pin rod of gear ring 4 close to the one end in 5 center of circle of inner ring, on two adjacent guide rods 10
Two adjacent connecting rods 6 are in straight line, and angle is up to 90 ° between two connecting rods 6 on same guide rod 10 at this time, that is, becomes
It is maximum to stitch angle, when gear ring 4 rotates clockwise, pulling force effect is applied to connecting rod 6 by arched arm 9, and in pin rod 8 and arc
Make closure close to each other between connecting rod 6 under the action of through slot 7 on arm 9, while guide rod 10 is moved to the center point of inner ring 5
It is dynamic, when with the rotation 8 contact arc slot 7 of pin rod of gear ring 4 far from the one end in 5 center of circle of inner ring, on two adjacent guide rods 10
Two adjacent connecting rods 6 are orthogonal, at this time minimum 0 ° of angle between two connecting rods 6 on same guide rod 10, that is, become seam
Angle is minimum.
According to two 6 corner dimensions of connecting rod on the same guide rod 10 of the operation change of above-mentioned steps two, to reach laser
There is obvious clear diffraction pattern on the screen in the varied angle slit between laser source directive connecting rod 6 that transmitter 13 emits, can
Show that the bigger central diffraction disk of crack width is narrower from diffraction pattern, obtained under the same slit diffraction fringe at the same level with
The increase angle of diffraction of slit width become smaller, it is simple and convenient, and it can be concluded that Central Symmetric diffraction pattern, increases entertaining
Property, novelty helps student to better understand experimental principle, helps to improve quality of instruction.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Staff person is described in the above embodiment and specification to be only it should be appreciated that the present invention is not limited to the above embodiments
Preference of the invention, is not intended to limit the invention, and without departing from the spirit and scope of the present invention, the present invention can also
There are various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.Claimed model
It encloses and is defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating, including iron plate (1), it is characterised in that: on the iron plate (1)
It is fixed with varied angle regulating mechanism, there are laser emitter (13) and projection plate in the two sides of the varied angle regulating mechanism respectively
(12), the varied angle regulating mechanism includes coaxial outer ring (3) and the inner ring (5) being fixed on column (2), and inner ring (5) position
On the inside of outer ring, the column lower end is vertically fixed on iron plate (1), slidably connects multiple guide rods on the inner ring (5)
(10), and guide rod (10) is directed toward one end connection living in inner ring (5) center of circle there are two the identical connecting rod of structure (6), and adjacent
The end point that two adjacent connecting rods (6) on two guide rods (10) are directed toward inner ring (5) center of circle is articulated and connected by pin shaft, institute
Inside fixed-axis rotation connection rack gear (4) of outer ring (3) is stated, the inner wall of the gear ring (4) connects adjacent by arched arm (9)
At the articulated connection of two adjacent connecting rods (6) on two guide rods (10), connected on the column (2) by cantilever and bearing
It is connected to driving mechanism.
2. a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating according to claim 1, it is characterised in that: described to lead
Two groups are no less than to bar (10) and moves towards arranged at equal intervals along the circumference of inner ring (5), and are located at adjacent two on inner ring (5) and are led
It is fixed with and the pin rod of centerline axis parallel (8) to the position between bar (10).
3. a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating according to claim 2, it is characterised in that: the arc
The through slot (7) of arc is offered on shape arm (9), and in pin rod (8) through slot (7) living being connected on arched arm (9).
4. a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating according to claim 1, it is characterised in that: described vertical
Driving mechanism on column (2) includes gear (11), and the gear (11) engages connection with gear ring (4), and shakes on gear (11)
Handle.
5. a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating according to claim 1, it is characterised in that: the iron
Perpendicular to being fixed with the sliding rail (14) that section is dove-tail form, the sliding rail (14) on the direction of plane where inner ring (5) on plate (1)
On be slidably connected there are two magnet block (15), and two magnet blocks (15) are located at the two sides of varied angle regulating mechanism.
6. a kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating according to claim 5, it is characterised in that: the throwing
Shadow plate (12) is fixedly connected on corresponding magnet block (15) by shaft, on another described magnet block (15) vertically upward
It is fixed with slotted-angle shelving (16), and the non-emissive end of laser emitter (13) is absorbed and fixed on slotted-angle shelving (16) by magnetic part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811173153.0A CN109192025B (en) | 2018-10-09 | 2018-10-09 | Single slit diffraction experiment demonstration device for physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811173153.0A CN109192025B (en) | 2018-10-09 | 2018-10-09 | Single slit diffraction experiment demonstration device for physics teaching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109192025A true CN109192025A (en) | 2019-01-11 |
| CN109192025B CN109192025B (en) | 2020-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811173153.0A Active CN109192025B (en) | 2018-10-09 | 2018-10-09 | Single slit diffraction experiment demonstration device for physics teaching |
Country Status (1)
| Country | Link |
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| CN (1) | CN109192025B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111968469A (en) * | 2020-10-23 | 2020-11-20 | 南京蹦蹦哒哒信息科技有限公司 | Teaching is with single slit diffraction and double slit interference experiment demonstration integrated device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111968469A (en) * | 2020-10-23 | 2020-11-20 | 南京蹦蹦哒哒信息科技有限公司 | Teaching is with single slit diffraction and double slit interference experiment demonstration integrated device |
| CN111968469B (en) * | 2020-10-23 | 2021-02-09 | 苏州巴涛信息科技有限公司 | Teaching is with single slit diffraction and double slit interference experiment demonstration integrated device |
| CN113012542A (en) * | 2020-10-23 | 2021-06-22 | 苏州巴涛信息科技有限公司 | Single slit diffraction and double slit interference experiment demonstration integrated device for teaching |
| CN113012542B (en) * | 2020-10-23 | 2022-11-04 | 上海致启科技有限公司 | Teaching is with single slit diffraction and double slit interference experiment demonstration integrated device |
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| Publication number | Publication date |
|---|---|
| CN109192025B (en) | 2020-07-07 |
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Application publication date: 20190111 Assignee: Ruian Ronghai electromechanical Co.,Ltd. Assignor: RUIAN RENQI TECHNOLOGY Co.,Ltd. Contract record no.: X2022330000222 Denomination of invention: A demonstration device of single slit diffraction experiment for Physics Teaching Granted publication date: 20200707 License type: Common License Record date: 20220617 |