CN109243271B - Wave interference demonstration device - Google Patents
Wave interference demonstration device Download PDFInfo
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- CN109243271B CN109243271B CN201811373555.5A CN201811373555A CN109243271B CN 109243271 B CN109243271 B CN 109243271B CN 201811373555 A CN201811373555 A CN 201811373555A CN 109243271 B CN109243271 B CN 109243271B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 106
- 230000004888 barrier function Effects 0.000 claims abstract description 23
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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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- Mathematical Physics (AREA)
- Algebra (AREA)
- Business, Economics & Management (AREA)
- Optics & Photonics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the teaching demonstration tool technologyThe technical field especially relates to a wave interference demonstration device. The wave interference demonstration device comprises a water tank (1), wherein the water tank (1) comprises a water inlet (11) and a water outlet (12), at least 2 barriers (2) are arranged in the water tank (1), the barriers (2) are arranged side by side on the same side of the water inlet (11), the height of each barrier (2) is larger than that of the water tank (1), and the cross section area of the intersection of each barrier (2) and the water surface in the water tank (1) is larger than 10CM 2 The distance between the barrier (2) and the adjacent barrier (2) is 2 CM-8 CM. The invention has the advantages of simple structure, simple and convenient manufacture and obvious experimental phenomenon, and is suitable for teaching class demonstration.
Description
Technical Field
The invention belongs to the technical field of teaching demonstration tools, and particularly relates to a wave interference demonstration device.
Background
The interference and diffraction of waves are an important teaching content of middle school physics. In the teaching practice, a teacher mainly adopts a teaching mode that principle teaching is mainly and video demonstration is auxiliary. Because of the lack of the experiment demonstration device, teachers do real classroom experiment demonstration. Chinese patent document CN 101059917a discloses a wave interference and diffraction experimental device, which comprises a water tank, an elastic sheet and wave sources, wherein two ends of the elastic sheet are fixed at the edge of the water tank, and one or more wave sources are fixed below the elastic sheet. According to the scheme, as the two ends of the elastic sheet are fixed at the edge of the water tank, the shaking effect is not obvious, the generation effect of water waves is not obvious, and the experimental phenomenon is poor. The applicant found, at a chance, that at a lake bay, a significant interference phenomenon occurred in some areas between 2 stones in the lake with little wind. And then communicating with a teacher, testing and improving to finally form the scheme.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a wave interference demonstration device which can generate obvious interference phenomenon.
In order to achieve the above object, the technical scheme of the present invention is as follows: the wave interference demonstration device comprises a water tank, wherein the water tank comprises a water inlet and a water outlet, at least 2 barriers are arranged in the water tank, the barriers are arranged side by side on the same side of the water inlet, and the height of each barrier is larger than that of the water tank.
As an improvement, the obstacle is intercepted at the intersection with the water surface in the water tankArea is greater than 10CM 2 。
As an improvement, the distance between the barrier and the adjacent barrier is 2 CM-8 CM.
As an improvement, the distance between the obstacle and the edge of the water tank is greater than 4CM.
As an improvement, the obstacle is a cylinder.
As a further improvement, the water tank is in a right triangle shape, the water outlet is positioned at the right angle of the water tank, and the water inlet is positioned at one acute angle of the water tank.
As a further improvement, the water tank is provided with a guide piece at the water inlet.
As a further improvement, a water pump is arranged in the water tank, the water inlet and the water outlet are communicated through a guide pipe, and clear water in the water tank is led out from the water outlet by the water pump and then is led into the water inlet.
The invention has the advantages of simple structure, simple and convenient manufacture and obvious experimental phenomenon, and is suitable for teaching class demonstration.
Drawings
Fig. 1 is a top view of the present invention.
In the figure: 1. a water tank; 11. a water inlet; 12. a water outlet; 2. an obstacle; 3. a guide piece; 4. a water pump; 5. a catheter.
Detailed Description
Example 1
As shown in fig. 1, the wave interference demonstration device of the invention comprises a water tank 1, wherein the water tank 1 is fixed on a bracket (not shown in the figure), the water tank 1 is in a right triangle shape, a water outlet 12 of the water tank 1 is positioned at a right angle of the water tank 1, and a water inlet 11 is positioned at one of acute angles of the water tank 1.
At least 2 barriers 2 are arranged in the water tank 1, in this embodiment 3 barriers 2 are arranged side by side at the same side of the water inlet 11. The obstacle 2 is positioned in the middle area of the water tank 1, and the obstacle 2 is a cylinder. The height of the obstacle 2 is greater than the height of the flume 1. The cross-sectional area of the obstacle 2 at the intersection with the water surface in the water tank 1 is greater than 10CM 2 Too small a cross-sectional area makes the experimental phenomenon less obvious. Adjacent barrier 2The interval between the two is 2 CM-8 CM. The distance between the obstacle 2 and the edge of the gutter 1 is greater than 4CM.
The water tank 1 is internally provided with a water pump 4, the water inlet 11 and the water outlet 12 are communicated through a conduit 5, and the water pump 4 guides clear water in the water tank 1 into the water inlet 11 through the conduit 5 after leading out the clear water from the water outlet 12. The water tank 1 is provided with the guide piece 3 at the water inlet 11, and the guide piece 3 ensures that the clean water led into the water inlet 11 cannot wash against the obstacle 2, so that the clean water forms a slight rotation effect at the obstacle 2.
During experimental demonstration, the water pump 4 is started, so that clear water in the water tank 1 flows from the water inlet 11 to the water outlet 12, and after the clear water flows through the side surfaces of the barriers 2, the clear water can strike 3 barriers 2 at the same time, and complete circular waves can be generated around the barriers 2. The experimental phenomenon of this scheme is very obvious, probably because the influence of rivers makes barrier 2 around forming slight corotation, makes the vibrations of certain region strengthened, and the degree that the wave of water is blown up is obviously more than other regions. In fig. 1, the visual effect of the moire superposition is significantly stronger at the positions coming out with the dashed boxes than at other positions. Although the amplitudes of the ripple vibrations are also superimposed in the area between adjacent obstacles 2, it is possible that the frontal collision of the water waves dampens the vibrations due to experimental media, which is not as obvious as the position of the dashed frame.
Claims (5)
1. Wave interference demonstration device, including basin (1), its characterized in that: the water tank (1) comprises a water inlet (11) and a water outlet (12), the water inlet (11) is communicated with the water outlet (12) through a guide pipe (5), and a water pump (4) for leading clear water out of the water outlet (12) and then leading the clear water into the water inlet (11) is arranged in the water tank (1); at least 2 barriers (2) are arranged in the water tank (1), the barriers (2) are arranged side by side on the same side of the water inlet (11), and the height of each barrier (2) is larger than that of the water tank (1); the water tank (1) is provided with a guide piece (3) at the water inlet (11), and the guide piece (3) prevents the clear water led into the water inlet (11) from being flushed against the obstacle (2); the water tank (1) is in a right triangle shape, the water outlet (12) is positioned at the right angle of the water tank (1), and the water inlet (11) is positioned at one of the acute angles of the water tank (1).
2. The wave interference demonstration device of claim 1, wherein: the cross section area of the obstacle (2) at the intersection with the water surface in the water tank (1) is more than 10CM 2 。
3. The wave interference demonstration device of claim 2, wherein: the distance between the barrier (2) and the adjacent barrier (2) is 2 CM-8 CM.
4. The wave interference demonstration device of claim 1, wherein: the distance between the obstacle (2) and the edge of the water tank (1) is larger than 4CM.
5. The wave interference demonstration device of claim 1, wherein: the obstacle (2) is a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373555.5A CN109243271B (en) | 2018-11-12 | 2018-11-12 | Wave interference demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373555.5A CN109243271B (en) | 2018-11-12 | 2018-11-12 | Wave interference demonstration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109243271A CN109243271A (en) | 2019-01-18 |
| CN109243271B true CN109243271B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811373555.5A Active CN109243271B (en) | 2018-11-12 | 2018-11-12 | Wave interference demonstration device |
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| Country | Link |
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| CN (1) | CN109243271B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114898640B (en) * | 2022-03-23 | 2024-02-06 | 合肥嘉石科普服务有限公司 | Wave diffraction phenomenon display method, system and device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05296877A (en) * | 1992-04-21 | 1993-11-12 | Shimizu Corp | Plane wave generating water tank |
| KR200283622Y1 (en) * | 2002-03-19 | 2002-07-27 | 김수연 | Learning Water-wave Projector |
| CN2891163Y (en) * | 2006-04-18 | 2007-04-18 | 上海市嘉定区第二中学 | Wave interference and diffraction experiment apparatus |
| CN101059917A (en) * | 2006-04-18 | 2007-10-24 | 上海市嘉定区第二中学 | Wave interference and diffraction experimental device |
| CN201600812U (en) * | 2009-12-28 | 2010-10-06 | 潘雪薇 | Demonstrator of overlaying and passing-through of wave |
| CN201741307U (en) * | 2010-08-10 | 2011-02-09 | 余姚市神马教仪成套有限公司 | Wave-making water bath experimental instrument |
| CN201845472U (en) * | 2010-10-08 | 2011-05-25 | 吴建伟 | Fork-type water wave interference demonstration instrument |
| KR20110123832A (en) * | 2010-05-10 | 2011-11-16 | 김성훈 | Water waves generator apparatus |
| CN102663930A (en) * | 2012-05-08 | 2012-09-12 | 刘杰 | Doppler Effect experimental device, system and method |
| CN209607259U (en) * | 2018-11-12 | 2019-11-08 | 湖州师范学院 | The interference demonstration device of wave |
-
2018
- 2018-11-12 CN CN201811373555.5A patent/CN109243271B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05296877A (en) * | 1992-04-21 | 1993-11-12 | Shimizu Corp | Plane wave generating water tank |
| KR200283622Y1 (en) * | 2002-03-19 | 2002-07-27 | 김수연 | Learning Water-wave Projector |
| CN2891163Y (en) * | 2006-04-18 | 2007-04-18 | 上海市嘉定区第二中学 | Wave interference and diffraction experiment apparatus |
| CN101059917A (en) * | 2006-04-18 | 2007-10-24 | 上海市嘉定区第二中学 | Wave interference and diffraction experimental device |
| CN201600812U (en) * | 2009-12-28 | 2010-10-06 | 潘雪薇 | Demonstrator of overlaying and passing-through of wave |
| KR20110123832A (en) * | 2010-05-10 | 2011-11-16 | 김성훈 | Water waves generator apparatus |
| CN201741307U (en) * | 2010-08-10 | 2011-02-09 | 余姚市神马教仪成套有限公司 | Wave-making water bath experimental instrument |
| CN201845472U (en) * | 2010-10-08 | 2011-05-25 | 吴建伟 | Fork-type water wave interference demonstration instrument |
| CN102663930A (en) * | 2012-05-08 | 2012-09-12 | 刘杰 | Doppler Effect experimental device, system and method |
| CN209607259U (en) * | 2018-11-12 | 2019-11-08 | 湖州师范学院 | The interference demonstration device of wave |
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| CN109243271A (en) | 2019-01-18 |
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