CN2031956U - Wave motion demonstrator - Google Patents
Wave motion demonstrator Download PDFInfo
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- CN2031956U CN2031956U CN 88203485 CN88203485U CN2031956U CN 2031956 U CN2031956 U CN 2031956U CN 88203485 CN88203485 CN 88203485 CN 88203485 U CN88203485 U CN 88203485U CN 2031956 U CN2031956 U CN 2031956U
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- wave
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model discloses a wave motion demonstrator, which belongs to a physical teaching apparatus. The utility model is characterized in that the vibration source of the longitudinal wave is added on the basis of an original transversal wave demonstration device to generate a longitudinal wave, make a stick-shaker disk rigidly connect and eliminate the generation of the mechanical wave. The wave motion demonstrator can demonstrate not only the transversal wave, but also the longitudinal wave. And furthermore, the utility model can do many experiments about waves to make students intuitively, truly and iconically observe many phenomena of the waves: the wave speed, the wave frequency, the wave period, the wave transmission of energy, the relationship of the wave propagation and the medium, the wave reflection, the wave superposition, the wave interference and the wave polarization. The wave motion demonstrator is very helpful to the wave teaching. The utility model is a necessary demonstrator to school.
Description
Title of the present invention is the fluctuation demonstrator, belongs to physics educational apparatus.
In the physics teaching of the relevant ripple of school, the student thinks that content is more abstract, is difficult for grasping, and feels difficulty for the character of ripple, the understanding of feature.1986, the Wang Chun elder teacher of Affiliated Middle School of Nankai Univ., Tianjin City once developed a kind of " shear wave demonstration device " (1), and it makes vibration source with single pendulum, can do the experiment of many relevant shear waves, come the teaching demonstration content by it, be easy to the knowledge that the student grasps ripple, effect is fine.
Although the shear wave demonstration device can be done the experiment of many ripples,, the only content of shear wave just of demonstration then can't be demonstrated for compressional wave.And, when starting of oscillation, can produce mechanical wave owing to be that elasticity connects between the vibrating bar disc (Fig. 1 .8).
Therefore, the present invention has done substantial improvement on the basis of shear wave demonstration device, makes instrument can make shear wave, also can do the compressional wave experiment, and has overcome the generation of mechanical wave.
In order to produce compressional wave, on the structure of instrument except single pendulum shear wave vibration source is arranged (Fig. 1,19.20.21.22), in base (1) left forward side one compressional wave vibration source is housed, as shown in Figure 3, it mainly is to be made of bar spring (23), vibration hammer (24), shift fork (26).The bar spring is the steel bar of φ 3 * 300mm, and vibration hammer (24) is that plain metal (steel, iron) is made, and is of a size of φ 30 * 30mm, and a location bolt (25) is arranged above, can regulate the height of vibration hammer, thereby can regulate experiment.The long 10mm of two metal forks (steel wire) of shift fork (26), spacing 2mm, fork is on the bar that shakes during experiment.(bolt is also arranged on it) regulates the shift fork height, stirs the vibrator bar spring with hand, and shift fork (26) will be stirred the leftmost bar that shakes, thereby makes oscillator (11) produce the vibration of compressional wave.
Utilize this invention, can do many experiments about ripple, more intuitively, observe many phenomenons of ripple truly, visually: the shape of wave propagation, ripple, speed, frequency, cycle, the NE BY ENERGY TRANSFER of ripple, the relation of wave propagation and medium, wave reflection, stack, interference, polarization etc., this demonstrator is very helpful for the teaching of ripple, and each school all should have this instrument.
No matter be when demonstration shear wave or compressional wave, owing to be that elasticity connects between the oscillator, therefore when the vibration source starting of oscillation, can form mechanical wave, in order to eliminate this phenomenon, we connect making rigidity between the vibrating bar disc (8), the concrete practice is to inherit one diameter～4mm aperture below each sheet vibrating bar disc--the steel wire perforation, shown in Fig. 2,17, wear the steel wire (29) that a diameter equates with aperture therein, the vibrating bar disc rigidity is linked together, when the vibration source starting of oscillation, eliminate the generation of mechanical wave, steel wire can be released when not required.
Fig. 1 is fluctuation demonstrator one-piece construction figure, and Fig. 2 is a vibrating bar disc steel wire perforation synoptic diagram, and Fig. 3 is the compressional wave vibration source, wherein:
1--base (material: wooden, plastics all can)
The total pillar body of 2--(material: plastics, wooden all can)
3--detent guide rail (material: plastics, aluminium matter all can)
4--detent base (material: plastics, aluminium matter all can)
5--lifter (material: irony, aluminium matter all can)
6--brake cloth clamping plate (material: plastics)
7--brake cloth (material: polyfoam)
8--vibrating bar disc (material: plastics)
9--steel axle (material: steel)
10--bar (the material: steel) that shakes
11--oscillator (material: aluminium matter, plastics)
12--crossbeam (material: aluminium)
12--crossbeam (material: aluminium)
13--steel axle location-plate (material: plastics, organic glass)
14--elastic (material: rubber, spring all can)
15--spring(-supported) mount (material: wooden or plastics)
16--spring bolt (material: steel)
The perforation of 17--steel wire
18--brake handle (material: plastics)
19--shift fork (material: steel)
20--fork (material: steel)
21--vibration source frame (material: plastics, wooden)
22--pendulum (material: cast iron)
23--bar spring (material: steel)
24--compressional wave vibration hammer
The 25--bolt
26--compressional wave shift fork
27--bar spring abutment
The perforation of 28--spring
The 29--rigidity connects steel wire
List of references: the long shear wave demonstration device of (1) Wang Chun Physical Experiment 6(1987)
Claims (3)
1, a kind of fluctuation demonstrator that is made of oscillator, vibrating bar disc, vibration source, detent, bedframe etc. is characterized in that having a compressional wave vibration source, and the vibrating bar disc rigidity connects.
2, according to the said fluctuation demonstrator of claim 1, it is characterized in that said compressional wave vibration source be by the steel wire bar spring (23) of φ 3mm * 300mm ,～the metal compressional wave shift fork (26) of the bar spring abutment (27) of the wooden or plastics of 40 * 50 * 150mm, φ 30 * 30mm metal compressional wave vibration hammer (24), bolt (25), long 10mm spacing 2mm constitutes.
3, according to the said fluctuation demonstrator of claim 1, it is characterized in that it is the steel wire perforation (17) of opening one～φ 4mm below each vibrating bar disc that said vibrating bar disc rigidity connects, in the hole, wear the steel wire (29) of a diameter～φ 4mm, make and form the rigidity connection between the vibrating bar disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88203485 CN2031956U (en) | 1988-02-23 | 1988-02-23 | Wave motion demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88203485 CN2031956U (en) | 1988-02-23 | 1988-02-23 | Wave motion demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031956U true CN2031956U (en) | 1989-02-01 |
Family
ID=4838293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88203485 Withdrawn CN2031956U (en) | 1988-02-23 | 1988-02-23 | Wave motion demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031956U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021231A (en) * | 2011-09-22 | 2013-04-03 | 吴全如 | Multifunctional transverse wave, longitudinal wave, ring wave and standing wave demonstrator |
| CN104332084B (en) * | 2014-11-27 | 2016-05-25 | 浙江师范大学 | A kind of mechanical type velocity perturbation demonstrator |
| CN108986605A (en) * | 2018-09-28 | 2018-12-11 | 西南大学 | For the observation of Mechanical Longitudinal Waves and the experimental method of wave speed measurement |
-
1988
- 1988-02-23 CN CN 88203485 patent/CN2031956U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021231A (en) * | 2011-09-22 | 2013-04-03 | 吴全如 | Multifunctional transverse wave, longitudinal wave, ring wave and standing wave demonstrator |
| CN103021231B (en) * | 2011-09-22 | 2015-10-14 | 吴全如 | Multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device |
| CN104332084B (en) * | 2014-11-27 | 2016-05-25 | 浙江师范大学 | A kind of mechanical type velocity perturbation demonstrator |
| CN108986605A (en) * | 2018-09-28 | 2018-12-11 | 西南大学 | For the observation of Mechanical Longitudinal Waves and the experimental method of wave speed measurement |
| CN108986605B (en) * | 2018-09-28 | 2024-04-02 | 西南大学 | Experimental method for observing mechanical longitudinal wave and measuring wave velocity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |