CN201936496U - Sound and light transmission demonstration device - Google Patents
Sound and light transmission demonstration device Download PDFInfo
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- CN201936496U CN201936496U CN2011200274906U CN201120027490U CN201936496U CN 201936496 U CN201936496 U CN 201936496U CN 2011200274906 U CN2011200274906 U CN 2011200274906U CN 201120027490 U CN201120027490 U CN 201120027490U CN 201936496 U CN201936496 U CN 201936496U
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Abstract
The utility model discloses a sound and light transmission demonstration device comprising a base and a transparent grass cover fixed on the base in a sealed manner. A power supply is mounted on the base; a light source and an electric bell are fixed in the grass cover, and are connected to the power supply through cables to form an electric loop; and an evacuating device is fixed on the grass cover. The sound and light transmission demonstration device provided by the utility model can synchronously demonstrate sound and light. Besides, the fact that light can transmit without air while sound can not transmit without air is also demonstrated.
Description
Technical field:
The utility model relates to a kind of teaching aid, relates to the demonstration device that a kind of acousto-optic is propagated in particular.
Background technology:
Sound and light are spontaneous phenomenons common in life, and is well-known, and sound is propagated with the form of sound wave, and the propagation of sound is to need to rely on medium, and to be sound wave propagate the motion that forms by solid or liquid, gas to sound.The propagation of light is different with sound then, does not need medium, also can propagate under vacuum condition, and it also can be subjected to loss through medium the time.
In natural science teaching, need tell the reason of student's sound, light ray propagation, but sound be cannot see, impalpable, very abstract; And the propagation of light also is very abstract spontaneous phenomenon, depends simple preach alone, and the student is difficult to understand these abstract spontaneous phenomenons, and just need a kind of teaching aid this time, is used for the propagation of demonstrating sound, light; Chinese patent: 200420031537; A kind of sound and light presentation device that the primary school nature teaching is used that is used for is disclosed, this demonstration device is to make the rectangle box body with three-ply board or plastic plate, the place is provided with accumulator in the box portion left anterior angle, with illuminator, loudspeaker, switch, triode, be connected with the micro battery lead in the box body of packing into after elements such as resistance, capacitor are welded on the circuit board respectively again.This demonstration device can emit beam and sound simultaneously, seems very directly perceived, and structure is also uncomplicated, making is very much easily, has solved the luminous and sounding type simultaneously that exists in the prior art, the problem that intuitive is not strong.But, this demonstration device still can not be demonstrated out sound needs medium to propagate, and light is unwanted principle, still can not satisfy the requirement in the teaching, and the electrical equipment of this demonstration device is also many comparatively speaking, cost and cost are than higher, and cost performance is not high, are not suitable for large-scale promotion and application.
The utility model content:
The purpose of this utility model is at the deficiencies in the prior art part, provides a kind of acousto-optic to propagate demonstration device, and it can demonstrate out sound needs medium to propagate, and light is unwanted principle.
Technology solution of the present utility model is as follows:
Acousto-optic is propagated demonstration device, comprise a base and a transparent cloche, described cloche sealing and fixing is on described base, a power supply is installed on the described base, described cloche internal fixation has a light source and an electric bell, and described light source, electric bell connect and compose electric loop through cable and described power supply; On cloche, be fixed with a vacuum extractor.
Described acousto-optic is propagated demonstration device, and described vacuum means is changed to a vacuum pump.
Described acousto-optic is propagated demonstration device, also has a tensimeter that can show gaseous tension in the cloche on the described cloche.
Described acousto-optic is propagated demonstration device, the switch that also has a control electric bell and light source to open and close.
Described acousto-optic is propagated demonstration device, and described light source is the led lamp.
The utility model beneficial effect is:
1) acousto-optic of the present utility model is propagated demonstration device, and it is simple in structure, making is very easy, can be intuitively, demonstrate for the propagation of acousto-optic fast.
2) this novel acousto-optic is propagated demonstration device, and it promptly can accomplish the synchronous demonstration of sound, light, and in addition, it can also be demonstrated light and also can not propagate when having air, and sound can not propagated when having air.
Its principle of work is such, in the time of incipient, has this medium of air to exist in the transparent cloche, opens switch this time, makes electric bell sound, and light source emits beam in the time of together, and the student can see light simultaneously, hear sound; Utilize vacuum pump that cloche is vacuumized then, seeing the tensimeter that can show gaseous tension in the cloche, when the vacuum tightness in the cloche reaches needs, press switch, we can see that light emission comes out, but can't hear sound, because be the medium that does not have sound transmission of vacuum in the cloche this time, so, just can explain very intuitively that sound transmission needs medium and light ray propagation does not need the spontaneous phenomenon of medium.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
The following stated is preferred embodiment of the present utility model only, is not that scope of the present utility model is limited.
Embodiment sees accompanying drawing 1; Acousto-optic is propagated demonstration device, comprise a base 1 and a transparent cloche 2, described cloche 2 sealing and fixing are on described base 1, a power supply 3 is installed on the described base 1, described cloche internal fixation has a light source 4 and an electric bell 5, and described light source, electric bell connect and compose electric loop through cable and described power supply; On cloche, be fixed with a vacuum extractor 6.
Described vacuum extractor 6 is a vacuum pump.
Also has a tensimeter 7 that can show gaseous tension in the cloche on the described cloche.
The switch 8 that also has a control electric bell and light source to open and close.
Described light source is the led lamp.
Claims (5)
1. acousto-optic is propagated demonstration device, comprise a base and a transparent cloche, described cloche sealing and fixing is on described base, it is characterized in that: a power supply is installed on the described base, described cloche internal fixation has a light source and an electric bell, and described light source, electric bell connect and compose electric loop through cable and described power supply; On cloche, be fixed with a vacuum extractor.
2. acousto-optic according to claim 1 is propagated demonstration device, and it is characterized in that: described vacuum means is changed to a vacuum pump.
3. acousto-optic according to claim 1 and 2 is propagated demonstration device, it is characterized in that: also have a tensimeter that can show gaseous tension in the cloche on the described cloche.
4. acousto-optic according to claim 1 and 2 is propagated demonstration device, it is characterized in that: the switch that also has a control electric bell and light source to open and close.
5. acousto-optic according to claim 1 and 2 is propagated demonstration device, and it is characterized in that: described light source is the led lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200274906U CN201936496U (en) | 2011-01-27 | 2011-01-27 | Sound and light transmission demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200274906U CN201936496U (en) | 2011-01-27 | 2011-01-27 | Sound and light transmission demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936496U true CN201936496U (en) | 2011-08-17 |
Family
ID=44448012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200274906U Expired - Fee Related CN201936496U (en) | 2011-01-27 | 2011-01-27 | Sound and light transmission demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201936496U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077642A (en) * | 2013-01-24 | 2013-05-01 | 江南大学 | Vacuum physical phenomenon presentation device |
| CN104050852A (en) * | 2014-07-08 | 2014-09-17 | 崔春枝 | Vacuum sound insulation demonstration device |
| CN104050853A (en) * | 2014-07-09 | 2014-09-17 | 翟玉佳 | Gradual mode sound insulating teaching aid and experiment method thereof |
-
2011
- 2011-01-27 CN CN2011200274906U patent/CN201936496U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103077642A (en) * | 2013-01-24 | 2013-05-01 | 江南大学 | Vacuum physical phenomenon presentation device |
| CN104050852A (en) * | 2014-07-08 | 2014-09-17 | 崔春枝 | Vacuum sound insulation demonstration device |
| CN104050853A (en) * | 2014-07-09 | 2014-09-17 | 翟玉佳 | Gradual mode sound insulating teaching aid and experiment method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20120127 |