CN102467842A - Tuning fork vibration demonstration instrument - Google Patents
Tuning fork vibration demonstration instrument Download PDFInfo
- Publication number
- CN102467842A CN102467842A CN2010105454515A CN201010545451A CN102467842A CN 102467842 A CN102467842 A CN 102467842A CN 2010105454515 A CN2010105454515 A CN 2010105454515A CN 201010545451 A CN201010545451 A CN 201010545451A CN 102467842 A CN102467842 A CN 102467842A
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- CN
- China
- Prior art keywords
- tuning fork
- vibration
- reflecting mirror
- demonstration instrument
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a tuning fork vibration demonstration instrument. A light and thin reflecting mirror is stuck at the upper end of one branch of a tuning fork, an inclination angle is formed between the reflecting mirror and the tuning fork, and a semiconductor laser tube is fixedly arranged on a support. The working principle of the tuning fork vibration demonstration instrument is that laser is thrown at the reflecting mirror, and a reflected light pot locates on a wall; when the tuning fork dose not vibrate, the light spot becomes a small round dot; and when the tuning fork vibrates, as a result of persistence of vision, the light spot becomes a long strip light pillar. By using the instrument, not only can sounds made during the vibration of the tuning fork be heard, but also the vibration of the tuning fork can be clearly seen.
Description
Technical field
The invention belongs to a kind of senior middle school physics teaching instrument.Specifically, be a kind ofly can demonstrate the teaching and experiment equipment that tuning fork vibration grinds.
Technical background
In existing high school physics textbook, the vibration pronunciation is an important content in the teaching.But this content the time has an experiment difficult point in teaching, be exactly that the sound that sends of object is heard easily, and the vibration of object is difficult to observe.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of novel tuning fork vibration demonstrator.
Technical scheme of the present invention is following: sticking gossamery catoptron in the upper end of one of tuning fork, catoptron and tuning fork have the pitch angle, fixing semiconductor laser tube on support.
Principle of work of the present invention: on catoptron, the luminous point after the reflection is dropped on the wall laser.When tuning fork did not vibrate, luminous point was a dot; When tuning fork vibration, because persistence of vision, luminous point becomes the light beam of a strip.
Beneficial effect of the present invention: the sound that this instrument sends in the time of not only hearing tuning fork vibration, can also clearly observe the vibration of tuning fork.
Description of drawings
Fig. 1 is a structural representation of the present invention.
In Fig. 1,1. column, 2. semiconductor laser tube, 3. catoptron, 4. tuning fork, 5. resonance box.
Specific embodiments
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Can learn that from Fig. 1 a gossamery catoptron (3) is glued in the upper end that tuning fork is (4), catoptron (3) has the pitch angle with tuning fork (4), goes up a fixing semiconductor laser tube (2) at column (1).
Claims (1)
1. novel tuning fork vibration demonstrator, it is characterized in that: a gossamery catoptron (3) is glued in the upper end that tuning fork is (4), and catoptron (3) has the pitch angle with tuning fork (4), goes up a fixing semiconductor laser tube (2) at column (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105454515A CN102467842A (en) | 2010-11-16 | 2010-11-16 | Tuning fork vibration demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105454515A CN102467842A (en) | 2010-11-16 | 2010-11-16 | Tuning fork vibration demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102467842A true CN102467842A (en) | 2012-05-23 |
Family
ID=46071433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105454515A Pending CN102467842A (en) | 2010-11-16 | 2010-11-16 | Tuning fork vibration demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102467842A (en) |
Cited By (2)
| 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 |
| CN104318825A (en) * | 2014-10-27 | 2015-01-28 | 沈阳师范大学 | String vibration period experiment instrument with vibration motor and electric vibration tuning fork as double vibration wave sources |
-
2010
- 2010-11-16 CN CN2010105454515A patent/CN102467842A/en active Pending
Cited By (3)
| 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 |
| CN104318825A (en) * | 2014-10-27 | 2015-01-28 | 沈阳师范大学 | String vibration period experiment instrument with vibration motor and electric vibration tuning fork as double vibration wave sources |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120523 |