WO2015010583A1 - Tuning fork vibration demonstrator - Google Patents

Tuning fork vibration demonstrator Download PDF

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Publication number
WO2015010583A1
WO2015010583A1 PCT/CN2014/082582 CN2014082582W WO2015010583A1 WO 2015010583 A1 WO2015010583 A1 WO 2015010583A1 CN 2014082582 W CN2014082582 W CN 2014082582W WO 2015010583 A1 WO2015010583 A1 WO 2015010583A1
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WIPO (PCT)
Prior art keywords
tuning fork
mirror
light source
vibration
fork vibration
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PCT/CN2014/082582
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French (fr)
Chinese (zh)
Inventor
王乐安
王汉青
唐丰
唐智川
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湖州文思必得科教仪器有限公司
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Publication of WO2015010583A1 publication Critical patent/WO2015010583A1/en

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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
    • G09B23/14—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for acoustics
    • 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

Definitions

  • the invention relates to a physics teaching experiment tool, in particular to a tuning fork vibration player. Background technique
  • a new type of tuning fork vibration demonstrator discloses a demonstration device.
  • a light and thin mirror is attached to the upper end of a tuning fork, and the mirror has a tilt angle with the tuning fork.
  • a semiconductor laser tube is fixed on it.
  • the working principle of the invention The laser is directed onto the mirror so that the reflected spot falls on the wall.
  • the tuning fork is not vibrating, the spot is a small dot; when the tuning fork vibrates, the spot becomes a long beam of light due to the persistence of vision.
  • This instrument not only hears the sound of the tuning fork, but also clearly observes the vibration of the tuning fork.
  • the long beam of light is difficult to distinguish in the case of small amplitude, such a demonstration is not good.
  • the tuning fork vibration demonstrator of the present invention comprises a light source and a tuning fork
  • the tuning fork is provided with a mirror, and further comprises a rotating scanning mirror
  • the rotating scanning mirror comprises a bracket
  • the bracket is mounted on the motor.
  • the slanted mirror surface, the light emitted by the light source is reflected by the mirror and is just emitted to the inclined mirror surface of the rotating scanning mirror.
  • the light source is a laser generator
  • the incident light angle of the light on the mirror is 30 degrees to 45 degrees. Since the optical path of the present invention is relatively complicated, such position setting can ensure as little optical path interference as possible during use, and several components are also compact enough to avoid occupying an excessively large demonstration site.
  • the angle between the inclined mirror and the plane of the bracket is 30 degrees - 45 degrees.
  • the mirror angle of the tilted mirror affects the imaging size within a certain distance. With such an angle setting, it is possible to project an image of a moderately sized size for viewing at a distance of 30 cm.
  • a resonance box is further disposed under the tuning fork.
  • the resonance box can improve the vibration of the tuning fork.
  • the resonance chamber is a rectangular hollow wooden box, and the tuning fork is installed in the middle of the top of the resonance box.
  • a resonance box has a simple structure and is easy to install.
  • the light source, the tuning fork and the rotating scanning mirror are all mounted on a bottom plate.
  • This structure is mainly easy to move, allowing the light source, tuning fork and rotating scanning mirror to be handled as a whole without affecting their mutual position. In this way, it is not necessary to separately adjust the preferred after the movement, and a projection whiteboard is also set up on the edge of the bottom plate. This allows you to project the image directly onto the whiteboard for viewing.
  • 1 is a schematic view showing the overall structure of a tuning fork vibration demonstrator of the present invention. Specific real
  • the tuning fork vibration demonstrator of the present invention comprises a light source 1 and a tuning fork 2, the tuning fork 2 is provided with a mirror 3, and further comprises a rotating scanning mirror, the rotating scanning mirror comprises a bracket 4, on the bracket 4 A tilting mirror 6 mounted on the motor 5 is provided, and the light emitted by the light source 1 is reflected by the mirror 3 and is emitted to the inclined mirror surface 6 of the rotating scanning mirror.
  • the light source 1 is a laser generator which emits light at an angle of incidence of 30 to 45 degrees on the mirror 3.
  • the angle between the inclined mirror surface 6 and the plane of the bracket 4 is 30 degrees - 45 degrees.
  • a resonance box 7 is also provided below the tuning fork 2.
  • the resonance chamber is a rectangular hollow wooden box, and the tuning fork 2 is installed in the center of the top of the resonance box 7.
  • the light source 1, the tuning fork 2 and the rotating scanning mirror are all mounted on a bottom plate.
  • a projection white plate 8 is also formed at the edge of the bottom plate.
  • the resonance box 7 has an open face facing forward, we position it on the right side above the base, and attach the tuning fork 2 to which the mirror 3 is attached.
  • the laser generator as the light source 1 is fixed and it is ensured that the laser light can be irradiated onto the mirror 3 of the tuning fork 2.
  • the hammer 2 is tapped with a small hammer, and the pattern on the projection whiteboard 8 is observed while the tuning fork 2 vibrates.
  • the position of the projected light is changed by the change of the inclined mirror 6, and projected to form a closed pattern similar to an elliptical shape.
  • the circular shape produced by the stationary tuning fork 2 is a linear ellipse, and the vibrating tuning fork 2 produces a pattern with an elliptical with fluctuations. This helps students visually observe the shape of the vibration. Compared with the pattern in the prior art which is only a straight line, the change of vibration is more obvious, and it is more exciting for students.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Algebra (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Lasers (AREA)

Abstract

A tuning fork vibration demonstrator, comprising a light source (1) and a tuning fork (2), wherein a reflector (3) is arranged on the tuning fork (2). The tuning fork vibration demonstrator further comprises a rotating scan mirror, wherein the rotating scan mirror comprises a support (4). An inclined mirror surface (6) which is installed on a motor (5) is arranged on the support (4), and after being reflected by the reflector (3), light rays transmitted from the light source (1) are just transmitted onto the inclined mirror surface (6) of the rotating scan mirror. By means of this arrangement, when illuminating the inclined mirror surface (6) of the rotating scan mirror, the light rays reflected by the tuning fork (2) can be projected out via the second amplification action of the inclined mirror surface (6) and form a closed pattern similar to an ellipse. The vibration of the tuning fork (2) is transformed into a pattern which is visual, visible and easy to distinguish, thereby being beneficial for a student to observe the substance of vibration.

Description

音叉振动演示器  Tuning fork vibration demonstrator
技术领域 Technical field
本发明涉及一种物理教学实验用具，尤其涉及一种音叉振动演器。 背景技术  The invention relates to a physics teaching experiment tool, in particular to a tuning fork vibration player. Background technique
为了提高学生对物理现象的理解， 在教学过程中需要用到一些演 示用具。 尤其在肉眼不易分辨的振动实验中， 为了使得振动更明显， 我们需要采用专门的演示设备。 申请号为 201010545451.5的发明专 利《一种新型音叉振动演示仪》中就公开了一种演示设备， 在音叉一 支的上端粘一块轻而薄的反射镜， 反射镜与音叉有倾斜角， 在支架上 固定一个半导体激光管。本发明的工作原理： 将激光向在反 射镜上， 使反射后的光点落在壁上。 当音叉没有振动时， 光点为一小圆点； 当 音叉振动时， 由于视觉暂留的原因， 光点变成一根长条形的光柱。 本 仪器不但能听到音 叉振动时发出的声音， 还能清楚的观察音叉的振 动。但是由于长条形的光柱在振幅较小的情况下还是很难分辨， 这样 的演示效果并不好。  In order to improve students' understanding of physical phenomena, some demonstration tools are needed in the teaching process. Especially in vibration experiments that are difficult to distinguish with the naked eye, in order to make the vibration more obvious, we need to use special demonstration equipment. In the invention patent No. 201010545451.5, a new type of tuning fork vibration demonstrator discloses a demonstration device. A light and thin mirror is attached to the upper end of a tuning fork, and the mirror has a tilt angle with the tuning fork. A semiconductor laser tube is fixed on it. The working principle of the invention: The laser is directed onto the mirror so that the reflected spot falls on the wall. When the tuning fork is not vibrating, the spot is a small dot; when the tuning fork vibrates, the spot becomes a long beam of light due to the persistence of vision. This instrument not only hears the sound of the tuning fork, but also clearly observes the vibration of the tuning fork. However, because the long beam of light is difficult to distinguish in the case of small amplitude, such a demonstration is not good.
发明内容 Summary of the invention
本发明的目的在于提供音叉振动演示器， 将音叉的振动转化为直 观可见易分辨的图形， 有利于学生观察到振动的实质。  It is an object of the present invention to provide a tuning fork vibration demonstrator that converts the vibration of the tuning fork into an intuitively visible and easily distinguishable pattern, which is advantageous for the student to observe the essence of the vibration.
为了实现所述目的， 本实用新型音叉振动演示器， 包括光源和音 叉， 所述音叉上设有反射镜， 还包括旋转扫描镜， 所述旋转扫描镜包 括支架， 支架上设有安装在电机上的倾斜镜面， 光源发射出的光线经 过反射镜反射后正好发射到旋转扫描镜的倾斜镜面上。 优选的， 所述光源为激光发生器， 其发出的光线在反射镜上的入 射角为 30度 -45度。 由于本实用新型光路较为复杂， 因此通过这样的 位置设置可以确保使用过程中尽可能少的光路干扰，同时几个部件也 足够紧凑， 避免占用过大的演示场地。 In order to achieve the object, the tuning fork vibration demonstrator of the present invention comprises a light source and a tuning fork, the tuning fork is provided with a mirror, and further comprises a rotating scanning mirror, the rotating scanning mirror comprises a bracket, and the bracket is mounted on the motor. The slanted mirror surface, the light emitted by the light source is reflected by the mirror and is just emitted to the inclined mirror surface of the rotating scanning mirror. Preferably, the light source is a laser generator, and the incident light angle of the light on the mirror is 30 degrees to 45 degrees. Since the optical path of the present invention is relatively complicated, such position setting can ensure as little optical path interference as possible during use, and several components are also compact enough to avoid occupying an excessively large demonstration site.
优选的， 所述倾斜镜面和支架所在平面之间的角度为 30 度 -45 度。倾斜镜面得镜面角度影响到一定距离内的成像大小。通过这样的 角度设置能在 30厘米的距离外投影出大小适中便于观察的影像。  Preferably, the angle between the inclined mirror and the plane of the bracket is 30 degrees - 45 degrees. The mirror angle of the tilted mirror affects the imaging size within a certain distance. With such an angle setting, it is possible to project an image of a moderately sized size for viewing at a distance of 30 cm.
优选的， 所述音叉下方还设有共鸣盒。共鸣盒能提高音叉的振动 效果。  Preferably, a resonance box is further disposed under the tuning fork. The resonance box can improve the vibration of the tuning fork.
优选的， 所述共鸣腔为长方形中空木盒， 所述音叉安装在共鸣盒 顶部正中。 这样的共鸣盒结构简单， 安装方便。  Preferably, the resonance chamber is a rectangular hollow wooden box, and the tuning fork is installed in the middle of the top of the resonance box. Such a resonance box has a simple structure and is easy to install.
优选的， 所述光源、 音叉和旋转扫描镜均安装在一块底板上。 这 样的结构主要便于移动， 可以使得光源、音叉和旋转扫描镜作为一个 整体搬运， 而不影响到他们相互位置。这样在移动后就不必单独调整 优选的， 所述底板边缘还树立一块投影白板。这样可以直接将图 像投影到白板上进行观察。  Preferably, the light source, the tuning fork and the rotating scanning mirror are all mounted on a bottom plate. This structure is mainly easy to move, allowing the light source, tuning fork and rotating scanning mirror to be handled as a whole without affecting their mutual position. In this way, it is not necessary to separately adjust the preferred after the movement, and a projection whiteboard is also set up on the edge of the bottom plate. This allows you to project the image directly onto the whiteboard for viewing.
通过这样的设置，本实用新型中音叉所反射的光线如果照射到扫 描镜的旋转斜面时， 会经由旋转斜面的第二次放大作用， 加以投射出 去， 并形成一个类似椭圆形的封闭图形。 附图说明  With such an arrangement, if the light reflected by the tuning fork of the present invention is irradiated onto the rotating slope of the scanning mirror, it will be projected through the second amplification of the rotating bevel and form a closed pattern resembling an ellipse. DRAWINGS
图 1是本实用新型音叉振动演示器的整体结构示意图。 具体实鮮式 1 is a schematic view showing the overall structure of a tuning fork vibration demonstrator of the present invention. Specific real
如图 1所示： 本实用新型音叉振动演示器， 包括光源 1和音叉 2， 所述音叉 2上设有反射镜 3， 还包括旋转扫描镜， 所述旋转扫描镜包 括支架 4， 支架 4上设有安装在电机 5上的倾斜镜面 6， 光源 1发射 出的光线经过反射镜 3反射后正好发射到旋转扫描镜的倾斜镜面 6 上。所述光源 1为激光发生器， 其发出的光线在反射镜 3上的入射角 为 30度 -45度。 所述倾斜镜面 6和支架 4所在平面之间的角度为 30 度 -45度。 所述音叉 2下方还设有共鸣盒 7。 所述共鸣腔为长方形中 空木盒， 所述音叉 2安装在共鸣盒 7顶部正中。 所述光源 1、 音叉 2 和旋转扫描镜均安装在一块底板上。所述底板边缘还树立一块投影白 板 8。  As shown in FIG. 1 , the tuning fork vibration demonstrator of the present invention comprises a light source 1 and a tuning fork 2, the tuning fork 2 is provided with a mirror 3, and further comprises a rotating scanning mirror, the rotating scanning mirror comprises a bracket 4, on the bracket 4 A tilting mirror 6 mounted on the motor 5 is provided, and the light emitted by the light source 1 is reflected by the mirror 3 and is emitted to the inclined mirror surface 6 of the rotating scanning mirror. The light source 1 is a laser generator which emits light at an angle of incidence of 30 to 45 degrees on the mirror 3. The angle between the inclined mirror surface 6 and the plane of the bracket 4 is 30 degrees - 45 degrees. A resonance box 7 is also provided below the tuning fork 2. The resonance chamber is a rectangular hollow wooden box, and the tuning fork 2 is installed in the center of the top of the resonance box 7. The light source 1, the tuning fork 2 and the rotating scanning mirror are all mounted on a bottom plate. A projection white plate 8 is also formed at the edge of the bottom plate.
我们以带有底座的音叉振动演示器为例，先将底座放于平坦的 桌面上。共鸣盒 7开口面朝前， 我们把它定位在底座上方的右侧， 并 把粘有反射镜 3的音叉 2装上。将作为光源 1的激光发生器固定并确 保激光可以照射到音叉 2的反射镜 3上。  Let's take the tuning fork vibration demonstrator with a base as an example. Place the base on a flat tabletop first. The resonance box 7 has an open face facing forward, we position it on the right side above the base, and attach the tuning fork 2 to which the mirror 3 is attached. The laser generator as the light source 1 is fixed and it is ensured that the laser light can be irradiated onto the mirror 3 of the tuning fork 2.
安装旋转扫描镜， 确保倾斜镜面 6可以接收到音叉 2上反射 镜 3所反射出的反射光。安装投影白板 8使得倾斜镜面 6反射出的激 光最终射到投影白板 8上， 打开电机 5， 在音叉 2静止的状态下投影 白板 8上可以看到整个类似于椭圆形的图案。  Install the rotating scanning mirror to ensure that the tilting mirror 6 can receive the reflected light reflected by the mirror 3 on the tuning fork 2. Install the projection whiteboard 8 so that the laser reflected from the tilted mirror 6 finally hits the projection whiteboard 8, and the motor 5 is turned on. When the tuning fork 2 is stationary, the whiteboard 8 can be seen as a whole oval-like pattern.
用小锤敲击音叉 2， 在音叉 2振动发声的状态下， 观察投影白板 8 上的图案。 音叉 2所反射的光线如果照射到旋转扫描镜上的倾斜镜面 6时， 会经由倾斜镜面 6的改变投射光线的位置，投射出去后形成一个类似 与椭圆形的封闭图形。静止的音叉 2产生的圆形是线形的椭圆， 振动 的音叉 2产生的图形是带有波动的椭圆。这样有助于学生直观观察到 振动的形态。和现有技术中仅仅是直线的图案相比， 振动的变化更明 显， 更能激发学生的兴趣。 The hammer 2 is tapped with a small hammer, and the pattern on the projection whiteboard 8 is observed while the tuning fork 2 vibrates. When the light reflected by the tuning fork 2 is irradiated onto the inclined mirror 6 on the rotating scanning mirror, the position of the projected light is changed by the change of the inclined mirror 6, and projected to form a closed pattern similar to an elliptical shape. The circular shape produced by the stationary tuning fork 2 is a linear ellipse, and the vibrating tuning fork 2 produces a pattern with an elliptical with fluctuations. This helps students visually observe the shape of the vibration. Compared with the pattern in the prior art which is only a straight line, the change of vibration is more obvious, and it is more exciting for students.
以上所述仅为本实用新型的具体实施例，但本实用新型的结构特 征并不局限于此， 任何本领域的技术人员在本实用新型的领域内， 所 作的变化或修饰皆涵盖在本实用新型的专利范围之中。  The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications made by those skilled in the art in the field of the present invention are covered by the present application. Among the new types of patents.

Claims

权 利 要 求 书 Claim
1. 音叉振动演示器， 包括光源 （1 ) 和音叉 （2)， 所述音叉 （2) 上设有反射 镜（3 )， 其特征在于， 还包括旋转扫描镜， 所述旋转扫描镜包括支架（4)， 支架 （4) 上设有安装在电机 （5 ) 上的倾斜镜面 （6)， 光源 （1 ) 发射出 的光线经过反射镜（3 )反射后正好发射到旋转扫描镜的倾斜镜面（6)上。 A tuning fork vibration demonstrator comprising a light source (1) and a tuning fork (2), the tuning fork (2) being provided with a mirror (3), characterized in that it further comprises a rotating scanning mirror, the rotating scanning mirror comprising a bracket (4), the bracket (4) is provided with a tilting mirror surface (6) mounted on the motor (5), and the light emitted by the light source (1) is reflected by the mirror (3) and is just emitted to the tilting mirror of the rotating scanning mirror. (6) Upper.
2. 根据权利要求 1 所音叉振动演示器， 其特征在于， 所述光源 （1 ) 为激光 发生器， 其发出的光线在反射镜 （3 ) 上的入射角为 30度 -45度。 2. A tuning fork vibration demonstrator according to claim 1, characterized in that said light source (1) is a laser generator which emits light at an angle of incidence of from 30 to 45 degrees on the mirror (3).
3. 根据权利要求 1 所音叉振动演示器， 其特征在于， 所述倾斜镜面 （6) 和 支架 （4) 所在平面之间的角度为 30度 -45度。  3. The tuning fork vibration demonstrator according to claim 1, characterized in that the angle between the inclined mirror surface (6) and the plane of the bracket (4) is 30 degrees - 45 degrees.
4. 根据权利要求 1所述音叉振动演示器， 其特征在于， 所述音叉 （2) 下方 还设有共鸣盒 （7)。  4. The tuning fork vibration demonstrator according to claim 1, characterized in that a resonance box (7) is further disposed below the tuning fork (2).
5. 根据权利要求 4所述音叉振动演示器， 其特征在于， 所述共鸣腔为长方形 中空木盒， 所述音叉 （2) 安装在共鸣盒 （7) 顶部正中。  The tuning fork vibration demonstrator according to claim 4, wherein the resonance chamber is a rectangular hollow wooden box, and the tuning fork (2) is installed in the center of the top of the resonance box (7).
6. 根据权利要求 1所述音叉振动演示器， 其特征在于， 所述光源 （1 )、 音叉 6. The tuning fork vibration demonstrator according to claim 1, wherein the light source (1) and the tuning fork
(2) 和旋转扫描镜均安装在一块底板上。 (2) and the rotating scanning mirror are mounted on a bottom plate.
7. 根据权利要求 6所述音叉振动演示器， 其特征在于， 所述底板边缘还树立 一块投影白板 （8)。  7. The tuning fork vibration demonstrator according to claim 6, wherein a bottom of the bottom plate further defines a projection whiteboard (8).
PCT/CN2014/082582 2013-07-23 2014-07-21 Tuning fork vibration demonstrator WO2015010583A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2013103152783A CN103354051A (en) 2013-07-23 2013-07-23 Demonstration device for tuning fork vibration
CN201310315278.3 2013-07-23

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103354051A (en) * 2013-07-23 2013-10-16 湖州文思必得科教仪器有限公司 Demonstration device for tuning fork vibration
CN104318825B (en) * 2014-10-27 2016-10-19 沈阳师范大学 Vibrating motor and Chord vibration cycle experimental instrument and operational approach thereof that the electric tuning fork that shakes is pair vibration wave source
CN105931538A (en) * 2016-06-02 2016-09-07 陈显盈 Double-tuning-fork resonance demonstrator
CN107328464B (en) * 2017-08-18 2023-10-31 东莞英伍电子有限公司 Audio vibration toothbrush vibration angle measuring equipment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004069471A (en) * 2002-08-06 2004-03-04 Wetmaster Kk Method and device for sound source visualization
CN2828976Y (en) * 2005-07-15 2006-10-18 天津师范大学 Tuning fork resonance tester using caser pen as light source
CN202058351U (en) * 2011-05-01 2011-11-30 曹晓春 Multifunctional vibration imaging demonstrator
CN202084227U (en) * 2011-05-10 2011-12-21 屈春利 Tuning fork vibration imaging instrument
CN103354051A (en) * 2013-07-23 2013-10-16 湖州文思必得科教仪器有限公司 Demonstration device for tuning fork vibration
CN203397571U (en) * 2013-09-10 2014-01-15 宁波华茂文教股份有限公司 Tuning fork vibration imaging demonstrating instrument
CN203433709U (en) * 2013-07-23 2014-02-12 湖州文思必得科教仪器有限公司 Tuning fork vibration demonstrator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191505512A (en) * 1914-04-29 1915-06-10 Alexander Behm Improvements in or relating to Apparatus for Measuring or Recording Oscillations, Impulses, and the like.
CN102467842A (en) * 2010-11-16 2012-05-23 陈渝德 Tuning fork vibration demonstration instrument

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004069471A (en) * 2002-08-06 2004-03-04 Wetmaster Kk Method and device for sound source visualization
CN2828976Y (en) * 2005-07-15 2006-10-18 天津师范大学 Tuning fork resonance tester using caser pen as light source
CN202058351U (en) * 2011-05-01 2011-11-30 曹晓春 Multifunctional vibration imaging demonstrator
CN202084227U (en) * 2011-05-10 2011-12-21 屈春利 Tuning fork vibration imaging instrument
CN103354051A (en) * 2013-07-23 2013-10-16 湖州文思必得科教仪器有限公司 Demonstration device for tuning fork vibration
CN203433709U (en) * 2013-07-23 2014-02-12 湖州文思必得科教仪器有限公司 Tuning fork vibration demonstrator
CN203397571U (en) * 2013-09-10 2014-01-15 宁波华茂文教股份有限公司 Tuning fork vibration imaging demonstrating instrument

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