CN2071366U - Longitudinal cross wave and its image demonstration device - Google Patents
Longitudinal cross wave and its image demonstration device Download PDFInfo
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- CN2071366U CN2071366U CN 90215803 CN90215803U CN2071366U CN 2071366 U CN2071366 U CN 2071366U CN 90215803 CN90215803 CN 90215803 CN 90215803 U CN90215803 U CN 90215803U CN 2071366 U CN2071366 U CN 2071366U
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Abstract
The utility model relates to a cross wave and the image thereof demonstration device, mainly comprising a support bracket 4, a metal sheet 1, a metal ball 2, a spring 8, a trolley wire 7, a slip ring 5, etc. The utility model is characterized in that the cross wave and the image thereof demonstration device also comprises an electronic display plate 12 and a control switch which is composed of a slip contactor 9 and a control board 10. The utility model can change the horizontal actual motion of a particle into a vertical motion with corresponding offset for displaying. So users can not only observe the actual longitudinal wave, but also can directly observe how the longitudinal wave image displays the longitudinal wave motion, and users can also observe the demonstration of a transverse wave and the image thereof with the help of a darkroom. The utility model is suitable for being used as a demonstration and experiment instrument in physics teaching.
Description
The utility model belongs to a kind of physics educational apparatus, is suitable for big, physics teaching in secondary school and makes lecture experiment instrument and grouping experiment instrument.
Present compressional wave demonstration device adopts volute spring to horizontally suspend with fine rule, and its end connects a Metal Ball, and ball is fixed in the structure of a steel disc.And the compressional wave image does not have demonstration instrument so far, draws, gives an oral account or make a sign with the hand and describe explanation with teacher entirely.Therefore, the student is very not directly perceived to the understanding of the motion conditions of ripple, causes a compressional wave and a visual difficult point that becomes in the physics teaching thereof.
The purpose of this utility model just provides a kind ofly can demonstrate compressional wave truly, can pass through circuit conversion or light-to-current inversion again, express the motion conditions of compressional wave intuitively, that is demonstrate out the image of compressional wave, can also the double as shear wave demonstration and shear wave image demonstration involve its image demonstration device in length and breadth.So that the student can form the notion of ripple quickly all sidedly, understand the characteristics of motion of ripple.
The technical solution of the utility model is: set up the conversion controling switch that electronic display system and mechanical motion and electronics show on the basis of existing compressional wave demonstration device structure, the real motion of particle horizontal direction, the motion that is converted into the vertical direction of corresponding displacement is shown.Like this, when observing true ripple, be appreciated that the compressional wave image is motion how to represent compressional wave, can also see directly how each particle vibrates, how image is represented again.Not only can see the image in a certain moment, also can see each image constantly.In addition, as the visual consecutive of each particle is got up, what then express is shear wave propagation from left to right, also just can demonstrate out shear wave and image thereof, and as demonstrating in the darkroom, effect is then better.Thereby realized the purpose of this utility model.
Below in conjunction with description of drawings concrete structure of the present utility model is described in detail.
Fig. 1 is the front elevation of the utility model structural representation.
Fig. 2 is a left view.
Fig. 3 is signal and the circuit theory diagrams of gauge tap embodiment one.
Fig. 4 is synoptic diagram and the circuit theory diagrams of gauge tap embodiment two.
As Fig. 1, shown in 2, the utility model is mainly by sheet metal ［ 1 ］, Metal Ball ［ 2 ］, four connecting links ［ 3 ］ (on, each two down), support ［ 4 ］, slip ring ［ 5 ］, pole line ［ 7 ］, spring compositions such as ［ 8 ］, sheet metal ［ 1 ］ is fixed on the base plate of support ［ 4 ］, Metal Ball ［ 2 ］ is fixed on the sheet metal ［ 1 ］, one end of spring ［ 8 ］ connects Metal Ball ［ 2 ］, and by pole line ［ 7 ］, slip ring ［ 5 ］ and upper connecting rod ［ 3 ］ horizontally suspend, characteristics of the present utility model are on support ［ 4 ］ top electronic data display ［ 12 ］ to be housed, axis of abscissa---X-axis is set on it, and the row's number that is provided with vertically equidistant light emitting diode ［ 13 ］ light emitting diode ［ 13 ］ setting of arranging of symmetrical X-axis equates (representing particle to determine according to the requirement of physics teaching outline) with the number that spring ［ 8 ］ is gone up selected representative particle, the position that is provided with is identical with the position of representing particle when the equilibrium position, in addition, the gauge tap of direct supply ［ 14 ］ and light emitting diode also is housed on support ［ 4 ］, the one-level of electric current ("+" or "-" utmost point) is directly joined with each light emitting diode, and another utmost point ("-" or "+" utmost point) connects corresponding light emitting diode after passing through gauge tap.Described gauge tap is made of a wiping device ［ 9 ］ and a control panel ［ 10 ］, control panel ［ 10 ］ is loaded on the bearing ［ 11 ］, representing on the particle at each all is that a wiping device is arranged, then be provided with a plurality of power turn-on points on the control panel ［ 10 ］, on behalf of the equilibrium position of particle, these firing point symmetries each be provided with, and its quantity and spacing is corresponding one by one with the setting of light emitting diode.When the wiping device touched certain power turn-on point, the pairing light emitting diode of this firing point was just bright, represented the horizontal shift of particle just to show with along slope coordinate.
Gauge tap of the present utility model can have multiple embodiments, Fig. 3 has provided embodiment one and circuit theory diagrams thereof, as shown in Figure 3, among this embodiment, control panel ［ 10 ］ is fiberglass layer compacting circuit board, copper bar ［ 15 ］ is equipped with at the place at aforesaid power turn-on point, and described wiping device ［ 9 ］ is a bare copper wire ［ 18 ］.It and fiberglass layer compacting circuit board keep in touch.Another utmost point of aforesaid power supply ("-" or "+" utmost point) then is directly to be connected on the spring, and the copper bar on the fiberglass layer compacting circuit board is communicated with lead with the other end of corresponding light emitting diode.Fig. 4 has provided the embodiment two and the circuit theory diagrams thereof of gauge tap, and as shown in Figure 4, among this embodiment, the circuit board that described control panel ［ 10 ］ is formed for photoelectric tube promptly is equipped with photoelectric tube ［ 16 ］ at the aforesaid power turn-on point of correspondence place.Another utmost point of aforementioned power source ("-" or "+" utmost point) joins with each photoelectric tube behind a reverser ［ 17 ］, and the light emitting diode of the corresponding control with it of another utmost point of each photoelectric tube joins.In addition, described wiping device ［ 9 ］ is one to lie in the anti-dazzling screen of representing on the particle ［ 19 ］ by the hard fine rule.When anti-dazzling screen contact photoelectric tube, that is when covering photoelectric tube, the pairing light emitting diode of photoelectric tube is bright.In like manner, also the horizontal shift of particle being converted into vertical mark shows.In order to guarantee that demonstrating effect not influenced by extraneous vibration, the utility model can be established vibration proof mounting ［ 6 ］ in the bottom of support ［ 4 ］.
Principle of work of the present utility model is summarized as follows: (1) disconnects power supply ［ 14 ］, then demonstrates compressional wave only; (2) each display circuit of representing particle all is independently, with a wiping device control, if only the wiping device with some representative particles contacts with control panel, then can demonstrate the change in displacement situation of vertical direction in the actual vibration situation of horizontal direction of a particle and the image; (3) respectively represent the wiping device of particle all to contact with control panel, the relation that then can demonstrate the compressional wave image is a dilatational wave, and the image of representing it is a sinusoidal curve, and compressional wave is propagated from left to right, and sinusoidal curve also constantly changes by the time; (4) as product of the present utility model is placed in the hint, demonstrate by the mode of (3), then compressional wave has not seen, and what see just in time is the motion conditions of shear wave, and the image of shear wave well just in time is a sinusoidal curve.
The utlity model has following advantage: demonstrate true to nature, one-object-many-purposes, simple in structure, integrated cost is low.
Claims (4)
1, a kind of its image demonstration device that involves in length and breadth, comprise sheet metal [1], Metal Ball [2], four connecting links [3] (on, each two down), support [4], slip ring [5], pole line [7], spring [8], sheet metal [1] is fixed on the base plate of support [4], Metal Ball [2] is fixed on the sheet metal [1], spring [8] one ends connect Metal Ball [2], and by pole line [7], slip ring [5] and upper connecting rod [3] horizontally suspend, of the present utility model being characterised in that on support [4] top is equipped with electronic data display [12], the abscissa axis X-axis is set on it, and be provided with the vertically equidistant light emitting diode of arranging [13] of symmetrical X-axis, row's number that light emitting diode [13] is provided with equates with the number that spring [8] is gone up selected representative particle, its position is identical with the position of representing particle when the equilibrium position, direct supply [14] and light emitting diode gauge tap are housed on support [4], one utmost point of power supply ("+" or "-") directly and each light emitting diode join, another utmost point ("-" or "+") connects corresponding light emitting diode after gauge tap, described gauge tap is made of a wiping device [9] and a control panel [10], control panel [10] is loaded on the bearing [11], each is represented on the particle all is that a wiping device is arranged, and control panel [10] is provided with a plurality of power turn-on points, on behalf of the particle equilibrium position, these firing point symmetries each be provided with, and its quantity and spacing are corresponding with being provided with of light emitting diode.
2, its image demonstration device that involves in length and breadth according to claim 1, it is characterized in that described control panel ［ 10 ］ is fiberglass layer compacting circuit board, at aforesaid power turn-on point place dress copper bar ［ 15 ］, described wiping device is bare copper wire ［ 18 ］, it and fiberglass layer compacting circuit board keep in touch, another utmost point of above-mentioned power supply ("-" or "+") is connected on the spring ［ 8 ］, and the copper bar on the fiberglass layer compacting circuit board is communicated with the other end of corresponding light emitting diode.
3, its image demonstration device that involves in length and breadth according to claim 1, it is characterized in that the circuit board that described control panel ［ 10 ］ is formed for photoelectric tube, photoelectric tube ［ 16 ］ is equipped with at corresponding above-mentioned power turn-on point place, another utmost point of above-mentioned power supply ("-" or "+" utmost point) joins with the utmost point of each photoelectric tube ［ 15 ］ behind a reverser ［ 17 ］, the light emitting diode of the corresponding control with it of another utmost point of each photoelectric tube joins, and described wiping device ［ 9 ］ is one to lie in the anti-dazzling screen of representing on the particle ［ 19 ］ by the hard fine rule.
4, according to claim 1,2, the 3 described demonstration devices of ripple in length and breadth is characterized in that being provided with vibration proof mounting ［ 6 ］ in the bottom of support ［ 4 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90215803 CN2071366U (en) | 1990-09-01 | 1990-09-01 | Longitudinal cross wave and its image demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90215803 CN2071366U (en) | 1990-09-01 | 1990-09-01 | Longitudinal cross wave and its image demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2071366U true CN2071366U (en) | 1991-02-13 |
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ID=4895043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90215803 Pending CN2071366U (en) | 1990-09-01 | 1990-09-01 | Longitudinal cross wave and its image demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2071366U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745642A (en) * | 2014-01-13 | 2014-04-23 | 安徽新视野科教文化传播有限责任公司 | Primary wave simulation demonstrator |
| CN106781890A (en) * | 2016-12-30 | 2017-05-31 | 马人欢 | Photo-electric Mechanical Longitudinal Waves apparatus for demonstrating |
-
1990
- 1990-09-01 CN CN 90215803 patent/CN2071366U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745642A (en) * | 2014-01-13 | 2014-04-23 | 安徽新视野科教文化传播有限责任公司 | Primary wave simulation demonstrator |
| CN106781890A (en) * | 2016-12-30 | 2017-05-31 | 马人欢 | Photo-electric Mechanical Longitudinal Waves apparatus for demonstrating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |