CN103021231B - Multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device - Google Patents
Multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device Download PDFInfo
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- CN103021231B CN103021231B CN201110296155.0A CN201110296155A CN103021231B CN 103021231 B CN103021231 B CN 103021231B CN 201110296155 A CN201110296155 A CN 201110296155A CN 103021231 B CN103021231 B CN 103021231B
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- wave
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- loudspeaker
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- 125000004122 cyclic group Chemical group 0.000 claims abstract description 7
- 239000002984 plastic foam Substances 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000005236 sound signal Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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Abstract
The present invention relates to a kind of multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device.It is finely tuned button, compressional wave amplitude modulation button, loudspeaker wiring plate, power amplifier output line etc. formed by main frame, radiator window, signal source, power amplifier, loudspeaker, transparent pipe, tune pipe piston, frequency display instrument, stand, Vib., elastic threads, cyclic spring wire loop, compressional wave switch, compressional wave coarse adjustment button, compressional wave.It is characterized in that in main frame, being provided with signal source, power amplifier, Vib., be electrically connected between them, loudspeaker is fixed in transparent pipe one end, broken plastic foam is placed in transparent pipe, and moveable piston is set, the power amplifier output line other end is connected with frequency display instrument with loudspeaker with by loudspeaker wiring plate.The present invention can make student produce great curiosity, increases the research interest to physics.It is novel in design, and structure is simple, and required expense is low, easy to operate, and dynamic strong, demonstrating effect is obvious.
Description
Technical field
The present invention relates to a kind of Lab of General Physics device, specifically a kind of multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device
Background technology
In the teaching of Middle School Physics mechanical wave, to the concept easy understand of shear wave, but there is very large difficulty to the understanding of compressional wave, circumferential wave, to the standing wave more indigestibility of shear wave, circumferential wave, compressional wave and their each self-formings, we know, and " two to arrange the amplitude propagated in opposite direction identical; when the ripple that frequency is identical is superimposed, form standing wave." sound wave is when reflecting; identical before and after frequency and amplitude; and reflection wave is contrary with original ripple direction; can invent and observe shear wave, circumferential wave, sound compressional wave, and the demonstration device of their each self-forming standing waves? therefore, my research and design this multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device.
Summary of the invention
The object of the invention is the presentation process by this device, make the standing wave of student to shear wave, circumferential wave, compressional wave and their each self-formings easier to understand, and strengthen interesting and intuitive, cultivate its research interest to science.
This multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device, and it is finely tuned button, compressional wave amplitude modulation button, loudspeaker wiring plate, power amplifier output line, power circuit etc. formed by main frame, radiator window, signal source, power amplifier, loudspeaker, transparent pipe, tune pipe piston, frequency display instrument, stand, Vib., vibration head, elastic threads, cyclic spring wire loop, compressional wave switch, compressional wave coarse adjustment button, compressional wave.It is characterized in that host panel is provided with compressional wave switch, compressional wave coarse adjustment button, compressional wave fine setting button, compressional wave amplitude modulation button, signal source is provided with in main frame, power amplifier, Vib., be electrically connected between them, and with compressional wave switch, compressional wave coarse adjustment button, compressional wave fine setting button, compressional wave amplitude modulation button, power amplifier output line is connected, loudspeaker and loudspeaker wiring plate are fixed in transparent pipe one end, broken plastic foam is placed in transparent pipe, and moveable piston is set, the power amplifier output line other end is connected with frequency display instrument with loudspeaker with by loudspeaker wiring plate, its vibration head is arranged on above main frame, and connect one end of elastic threads, the other end of elastic threads is fixed on vertical stand, vibration head is also provided with cyclic spring wire loop.
Beneficial effect of the present invention:
1, the present invention can be enable in Demonstrating process, sees the forming process of shear wave, circumferential wave, compressional wave and standing wave intuitively, the secret that the standing wave realizing shear wave, circumferential wave, compressional wave and their each self-formings changes.Thus the interest of the continuous Scientific exploration of student can be attracted.
2, the present invention has significant progress compared with traditional lecture experiment, the vibration of tuning fork (dotted timer) is changed into the mechanical vibrator of adjustable frequency, the standing wave of shear wave, circumferential wave and their each self-formings can be observed simultaneously, add stronger interest with scientific.
3, the sound signal of adjustable frequency exports and rubber band loudspeaker is vibrated by the present invention, causes and vibrates in the plexi-glass tubular of built-in foam, the sound compressional wave that cannot observe and standing wave are observed by this demonstration device, has outstanding creativeness.
4, the present invention manufactures simply, easy to use, with low cost, practical, in material, technique, means etc., have significant improvement, successful.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.In figure 1 be main frame, 2 for radiator window, 3 for compressional wave switch, 4 for compressional wave coarse adjustment button, 5 for compressional wave fine setting button, 6 for compressional wave amplitude modulation button, 7 for power amplifier output line, 8 for loudspeaker, 9 for loudspeaker wiring plate, 10 for transparent pipe, 12 for adjustable piston, 13 for frequency display instrument, 15 for stand, 16 for vibration head, 17 for power amplifier, 18 for signal source, 19 for Vib., 20 for elastic threads, 21 be cyclic spring wire loop, 22 power circuits.
Embodiment
Power amplifier 17, signal source 18, Vib. 19 (mechanical type adjustable frequency) is provided with in demonstration device main frame 1 of the present invention as shown in Figure 1,22 power circuits, the vibration head 16 of its Vib. 19 is arranged on the top of main frame 1, periodically vibrate with 19 in the vertical directions, one end of elastic threads 20 is fixed on vertical stand 15, the other end is fastened in vibration head 16, regulate suitable distance, just can observe obvious shear wave and standing wave 11, as installed a cyclic spring wire loop 21 on Vib. 19, can be observed obvious circumferential wave 16 and annular standing wave 14.Transparent pipe (material such as useable glass or organic glass is made) 10 is separately provided with outside main frame 1, fixing loudspeaker 8 and loudspeaker wiring plate 9 are installed in transparent pipe 10 one end, the sound signal of adjustable frequency is provided to export by signal source 18, by power amplifier 17, sound signal is amplified, signal is received in the wiring of loudspeaker (rubber ring type) 8, make loudspeaker 8 in transparent pipe 10 one end being built-in with broken plastic foam, adjustment appropriate frequency and amplitude vibration, sound wave is allowed to propagate through the transparent pipe 10 of built-in plastic foam, can be observed acoustical vibration causes broken plastic foam to vibrate, form compressional wave 11.At the other end of transparent pipe 10, adjustable piston 12 is installed, the degree of depth of suitable change adjustable piston 12, the standing wave 11 (sound wave is met adjustable piston 12 and reflected, and the sound wave forming two row frequency same propagation directions contrary superposes in media as well) of sound wave can be there is.In the process, regulate frequency of source, amplitude, can be observed the standing wave phenomena of different situations.
The present invention can make student produce great curiosity, increases the research interest to physics.It is novel in design, and structure is simple, and required expense is low, easy to operate, and dynamic strong, demonstrating effect is obvious, is the good assistant of teachers ' classroom teaching.
Claims (5)
1. a multi-functional shear wave, compressional wave, annular involves standing wave demonstrating device, and it comprises main frame, radiator window, signal source, power amplifier, loudspeaker, transparent pipe, adjust pipe piston, frequency display instrument, stand, Vib., vibration head, elastic threads, cyclic spring wire loop, compressional wave switch, compressional wave coarse adjustment button, compressional wave fine setting button, compressional wave amplitude modulation button, loudspeaker wiring plate, power amplifier output line and power circuit, is characterized in that host panel is provided with compressional wave switch, compressional wave coarse adjustment button, compressional wave fine setting button, compressional wave amplitude modulation button, is provided with signal source in main frame, power amplifier, Vib., is electrically connected between them, and with compressional wave switch, compressional wave coarse adjustment button, compressional wave fine setting button, compressional wave amplitude modulation button, power amplifier output line is connected, loudspeaker and loudspeaker wiring plate are fixed in transparent pipe one end, broken plastic foam is placed in transparent pipe, and moveable piston is set, the other end of power amplifier output line is connected with loudspeaker wiring plate, and frequency display instrument is in parallel with loudspeaker, the vibration head of its Vib. is arranged on above main frame, and connecting one end of elastic threads, the other end of elastic threads is fixed on vertical stand, and Vib. is also provided with cyclic spring wire loop.
2. multi-functional shear wave as claimed in claim 1, compressional wave, annular involve standing wave demonstrating device, it is characterized in that: described transparent pipe useable glass is made.
3. multi-functional shear wave as claimed in claim 1, compressional wave, annular involve standing wave demonstrating device, it is characterized in that: the Vib. arranged in described main frame is mechanical type adjustable frequency.
4. multi-functional shear wave as claimed in claim 1, compressional wave, annular involve standing wave demonstrating device, it is characterized in that: transparent pipe one end the loudspeaker fixed adopt rubber coil loundspeaker.
5. multi-functional shear wave as claimed in claim 1, compressional wave, annular involve standing wave demonstrating device, it is characterized in that: the adjustable piston in transparent pipe can pipe in manual adjustments shift position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110296155.0A CN103021231B (en) | 2011-09-22 | 2011-09-22 | Multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110296155.0A CN103021231B (en) | 2011-09-22 | 2011-09-22 | Multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103021231A CN103021231A (en) | 2013-04-03 |
| CN103021231B true CN103021231B (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110296155.0A Expired - Fee Related CN103021231B (en) | 2011-09-22 | 2011-09-22 | Multi-functional shear wave, compressional wave, annular involve standing wave demonstrating device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345864A (en) * | 2013-07-23 | 2013-10-09 | 湖州文思必得科教仪器有限公司 | Rope wave demonstration device |
| CN103559815B (en) * | 2013-10-23 | 2015-10-14 | 国家电网公司 | Circular standing wave generating means |
| CN103645117B (en) * | 2013-12-11 | 2015-08-19 | 辽宁工程技术大学 | A kind of gas standing wave determination experiment device |
| CN106023744B (en) * | 2016-07-11 | 2019-01-08 | 重庆理工大学 | standing wave demonstration method |
| CN108898922B (en) * | 2018-07-01 | 2023-12-12 | 南京科技职业学院 | Adjustable mechanical wave demonstration instrument |
| CN109671336A (en) * | 2018-12-13 | 2019-04-23 | 齐齐哈尔大学 | A kind of double vibration source type standing wave instrument |
| CN109671335A (en) * | 2018-12-13 | 2019-04-23 | 齐齐哈尔大学 | A kind of hand-held standing wave instrument and demenstration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031956U (en) * | 1988-02-23 | 1989-02-01 | 天津市南开大学附属中学 | Wave motion demonstrator |
| CN201590180U (en) * | 2009-12-29 | 2010-09-22 | 上海市虹口区崇明路小学 | Acoustic waveform demonstration device |
| CN201638422U (en) * | 2009-12-28 | 2010-11-17 | 赖振雄 | Transverse wave and longitudinal wave demonstrator |
| CN101958073A (en) * | 2010-09-09 | 2011-01-26 | 德州学院 | Comprehensive sound characteristic experimental instrument |
| CN202331989U (en) * | 2011-09-22 | 2012-07-11 | 吴全如 | Multifunctional demonstrator for transverse wave, longitudinal wave, annular wave and stationary wave |
-
2011
- 2011-09-22 CN CN201110296155.0A patent/CN103021231B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031956U (en) * | 1988-02-23 | 1989-02-01 | 天津市南开大学附属中学 | Wave motion demonstrator |
| CN201638422U (en) * | 2009-12-28 | 2010-11-17 | 赖振雄 | Transverse wave and longitudinal wave demonstrator |
| CN201590180U (en) * | 2009-12-29 | 2010-09-22 | 上海市虹口区崇明路小学 | Acoustic waveform demonstration device |
| CN101958073A (en) * | 2010-09-09 | 2011-01-26 | 德州学院 | Comprehensive sound characteristic experimental instrument |
| CN202331989U (en) * | 2011-09-22 | 2012-07-11 | 吴全如 | Multifunctional demonstrator for transverse wave, longitudinal wave, annular wave and stationary wave |
Non-Patent Citations (2)
| Title |
|---|
| 便携式纵驻波演示仪的制作;梁法库等;《物理与工程》;20101031;全文 * |
| 多功能横波、纵波及驻波演示器;吴全如;《中国科技教育》;20110915;全文 * |
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| CN103021231A (en) | 2013-04-03 |
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Address after: 511442 Guangdong Province, Guangzhou City Southern towns Panyu District Hungnam Avenue 398, Guangzhou Garden Music Garden foot of the mountain 4-603 Applicant after: Wu Quanru Address before: 515041 dormitory D-302, bureau of education, spring road, Guangdong, Shantou Applicant before: Wu Quanru |
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Address after: 511442 Guangdong Province, Guangzhou City Southern towns Panyu District Hungnam Avenue No. 398 Guangzhou agile foot of the mountain 4-603 Applicant after: Wu Quanru Address before: 511442 Guangdong Province, Guangzhou City Southern towns Panyu District Hungnam Avenue 398, Guangzhou Garden Music Garden foot of the mountain 4-603 Applicant before: Wu Quanru |
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Address after: 511442 Guangdong Province, Guangzhou City Southern towns Panyu District Hungnam Avenue No. 398 Guangzhou agile as good as water 2-701 Patentee after: Wu Quanru Address before: 511442 Guangdong Province, Guangzhou City Southern towns Panyu District Hungnam Avenue No. 398 Guangzhou agile foot of the mountain 4-603 Patentee before: Wu Quanru |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20151014 Termination date: 20200922 |