CN2828976Y - Tuning fork resonance tester using caser pen as light source - Google Patents
Tuning fork resonance tester using caser pen as light source Download PDFInfo
- Publication number
- CN2828976Y CN2828976Y CN 200520026686 CN200520026686U CN2828976Y CN 2828976 Y CN2828976 Y CN 2828976Y CN 200520026686 CN200520026686 CN 200520026686 CN 200520026686 U CN200520026686 U CN 200520026686U CN 2828976 Y CN2828976 Y CN 2828976Y
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- laser pen
- tuning fork
- light
- catoptron
- splitter
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Abstract
The utility model discloses a tuning fork resonating tester using a laser pen as a light source, and the utility model solves the problem that experiment phenomena are not obvious; students are not easy to observe the experiment phenomena, etc. The utility model has the proposal the utility model comprises the laser pen, light screens, spectroscopic plates, reflecting mirrors, a tuning fork pasted with the reflecting mirror, a resonating box and a bottom plate, wherein the tuning fork pasted with the reflecting mirror is arranged on the resonating box; the laser pen, the reflecting mirrors and the spectroscopic plates are arranged on the bottom plate according to the relation of transmittance and reflection; the laser pen is arranged at the right side; a light beam firstly irradiates the reflecting mirror (9), and is reflected onto the reflecting mirror (7); then, the light beam is reflected onto the spectroscopic plate (11) through the reflecting mirror; reflected light is reflected onto the light screen (3) through the spectroscopic plate (11), and transmittance light is reflected onto the spectroscopic plate (12); the transmittance light irradiates the light screen (2); the reflected light is reflected onto the spectroscopic plate (13) through the reflecting mirror; then, the reflected light is reflected onto the light screen (3); the transmittance light is reflected into the reflecting mirror (8), and is reflected onto the light screen (2) through the reflecting mirror (8). The utility model has the advantages of simple structure and low cost, and is convenient to bring into classrooms, and thus the students can observe experiments with obvious and live effects.
Description
Affiliated technical field
The utility model relates to a kind of physics educational apparatus, and particularly a kind of physics educational apparatus that can show oscillation phenomenon especially is applicable to the physics educational apparatus of middle school physics class demonstration.
Background technology
In medium, in the physics teaching in secondary school of the propagation of sound and resonance of the voice, generally use tuning fork to do demonstration.When lecturing sound transmission, be to demonstrate by the vibration of tuning fork.Usually the character of utilizing ball pitch or polyfoam ball light weight and easily wafing, with its contact tuning fork, bead is upspring, and shows tuning fork in vibration, and promptly sound is propagated in medium.But, when this experiment of demonstration, in fact but exist following problem: the first, bead is subjected to the influence of air flow (air resistance) easily; The second, the ball pitch surface is softer relatively, during the contact tuning fork " soft collision " takes place, and also can influence the effect of upspringing, and is very little so the amplitude that bead is upspring is little, is difficult for being arrived by observation of students.
When lecturing resonance of the voice, method one with two tuning forks, is knocked one of them tuning fork, listens the sound of another tuning fork, because the sympathetic response sound of another tuning fork is too small, the student almost can't hear sympathetic response sound; Method two still contacts another tuning fork with ball pitch or polyfoam ball, and bead is upspring, and shows that tuning fork empathizes.But because the existence of above-mentioned two problems, the amplitude that bead is upspring is little, and is very little, so the student still experiences less than this physical phenomenon that vibes, so, more difficultly observed by each classmate in the classroom.
For these reasons, its experiment DeGrain of this experiment method, the student sometimes even do not observe experimental phenomena thereby almost is helpless to the explanation of teacher to awarding knowledge, experiment content, thereby influences teaching efficiency.
Although the teacher who has proposes to solve this problem with sound amplifier, but has increased other some troubles; In addition, the teacher who also has lectures by the mode of using the demonstration of CAI courseware, and will influence the intuitive of observation of students experimental phenomena and the enthusiasm of study so to a certain extent, is unfavorable for exciting the interest of student's learning physics knowledge.
Technical scheme
In order to overcome existing the problems referred to above of in middle school physics classroom teaching, demonstrating tuning fork vibration and resonance effect existence, it is lower that the purpose of this utility model provides a kind of cost, and be convenient to move, be easy in classroom instruction, demonstrate, can make student on the different azimuth can both clearly observe the tuning fork resonance Instrument of experimental phenomena.
The design proposal that its practical problems that solves the utility model adopts is that it comprises: laser pen, optical screen, beam-splitter, catoptron, the tuning fork that posts catoptron, resonant tank, base plate; The tuning fork that posts catoptron is installed on the resonant tank, and laser pen is installed in the right side of base plate; All the other transmissions according to light beam, reflective relation are installed in the relevant position of base plate: laser beam at first is radiated on the catoptron (9), and is reflected onto on the catoptron (7), reflexes on the beam-splitter (11) through catoptron (7); Be mapped on the optical screen (3) through beam-splitter (11) reflected light, and transmitted light is to beam-splitter (12); Light beam will be once more by transmission, reflection, and wherein transmitted ray is mapped on the optical screen (2), and reflection ray reflexes on the beam-splitter (13) light after catoptron (10) reflection; Light is divided into reflection ray and transmitted ray with another, and wherein reflection ray is mapped on the optical screen (3), and transmitted ray is injected catoptron (8), reflexes on the optical screen (2) through catoptron (8).
Laser pen of the present utility model, optical screen, beam-splitter, catoptron are to be installed on the base plate by adjustable optical element support.
Laser pen of the present utility model is to be installed on adjustable optical element support by adjustable apparatus, and adjustable apparatus is made of laser pen sleeve pipe, laser pen switch adjusting screw, laser pen elevation angle adjusting screw; With packing ring laser pen is installed in the laser pen sleeve pipe; Below the laser pen sleeve pipe, laser pen elevation angle adjusting screw, laser pen switch adjusting screw are installed respectively with the side.
Optical screen of the present utility model, beam-splitter, catoptron are to be installed on adjustable optical element support by optical element frame folder.
Catoptron on the utility model tuning fork (9), (10) are the catoptrons made from identical material.
The beneficial effects of the utility model are: this resonance Instrument cost is lower, is easy to move.Therefore, this experiment instrument can be brought the classroom into easily, is used for common classroom instruction demonstration.Compare with the demonstration tuning fork vibration of using always at present and the method for resonance effect, this instrument has used the experiment of optical means demonstration acoustics, and its experiment effect image, lively more helps the observation of students experimental phenomena, understands physical concept.And this instrument used two can adjusting angle optical screen, can easily experimental phenomena be represented to being sitting in the more student on the different azimuth in the classroom, make all students in the classroom can directly observe experimental phenomena clearly, help the teacher by acoustics knowledge is explained in the analysis of experimental phenomena, improve teaching efficiency.Because the laser pen in this instrument is mounted on the adjustable apparatus, each optical element all is installed on adjustable optical element frame folder; They are again to be installed on the base plate by adjustable optical element support, before the class experiment instrument are being debugged thereby help the teacher, so that reach best experiment effect.
Description of drawings
Fig. 1 is that optical element frame folder of the present utility model is installed in the structural representation on the optical element support.
Fig. 2 is that laser pen adjustable apparatus of the present utility model is installed in the structural representation on the optical element support.
Fig. 3 a is an index path of the present utility model.
Fig. 3 b is one-piece construction figure of the present utility model.
Among the figure: 1. laser pen, 2. optical screen, 3. optical screen, 4. base plate, 5. resonant tank, 6. resonant tank, 7. catoptron, 8. catoptron 9. is affixed on the catoptron on the tuning fork fork branch, 10. be affixed on the catoptron on the tuning fork fork branch, 11. beam-splitters, 12. beam-splitters, 13. beam-splitter, 14. tuning forks, 15. tuning forks, 16. support screw, 17. laser pen sleeve pipes, 18. laser pen elevation angle adjusting screw, 19. laser pen elevation angle adjusting screw, 20. packing ring, 21. packing rings, 22. laser pen switch adjusting screw, 23. handle, 24. handles, 25. pillars, 26. the height adjustable screw, 27. bases, 28. optical element frames folder, 29. elevation angle adjusting screw, 30. elasticity things.
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, 2, the optical element support is to be made of pillar (25), height adjustable screw (26), base (27), and pillar (25) is installed on the base (27), goes up at base (27) a height adjustable screw (26) is installed.Like this, if loosen this spiral, pillar (25) can rotate freely in the scope at 360 ° of angles, can also make things convenient for the user that the height of support is debugged.Consider the aesthetic property of instrument, the material of pillar (25) is selected organic glass for use.
As Fig. 1, optical element frame folder (28) is the groove shape thing of being made by iron plate, side at it is installed three elevation angle adjusting screw (29), both can play the effect of regulating each optical element elevation angle, each optical element can also be fixed on the optical element frame folder (28), and between optical element and optical element frame folder (28), filling up last layer elasticity thing (30), elasticity thing (30) can be rubber blanket or hard paper, thereby makes things convenient for the user that experiment instrument is debugged.Optical element such as optical screen (2,3), beam-splitter (11-13), catoptron (7,8) are installed on the optical element stent strut (25) by frame folder (28).
As Fig. 2, the laser pen adjustable apparatus is by laser pen sleeve pipe (17), laser pen elevation angle adjusting screw (18,19), packing ring (20,21), and laser pen switch adjusting screw (22) constitutes.With packing ring (20) and packing ring (21) laser pen is fixed in the laser pen sleeve pipe (17), install a laser pen switch adjusting screw (22) in laser pen sleeve pipe (17) side, by of the extruding of switch adjusting screw, reach and make things convenient for the user to control the laser pen switching purposes the laser pen switch.Below at laser pen sleeve pipe (17) is installed laser pen elevation angle adjusting screw (18) and laser pen elevation angle adjusting screw (19) respectively near front and rear, and purpose is to make things convenient for the user that the elevation angle of laser pen is regulated.Laser pen is installed on adjustable optical element stent strut (25) by this adjustable apparatus.
Shown in Fig. 3 b, paste the catoptron (9,10) of identical material on the fork branch of tuning fork (14,15) respectively, tuning fork (14,15) is installed in respectively on the resonant tank (5,6).7 support and 2 resonant tanks that tuning fork is housed that the respective optical element is housed, transmission according to light beam, the formed light path of reflective relation is shown in Fig. 3 a, be installed in the relevant position (shown in Fig. 3 b) of base plate (4) respectively: laser pen (1) is installed in the right side of base plate (4), laser beam at first shines catoptron (9), and be reflected onto on the catoptron (7), reflex on the beam-splitter (11) through catoptron (7), be mapped on the optical screen (3) through beam-splitter (11) reflected light, the i.e. luminous point that produces by tuning fork (14) upper reflector (9), and transmitted light is to beam-splitter (12); Light beam will be once more by transmission, reflection, and wherein transmitted ray is mapped on the optical screen (2), i.e. the luminous point that produces by tuning fork (14) upper reflector (9), and reflection ray reflexes on the beam-splitter (13) light after catoptron (10) reflection; Light is divided into reflection ray and transmitted ray with another, wherein reflection ray is mapped on the optical screen (3), the i.e. luminous point that produces by tuning fork (15) upper reflector (10), and transmitted ray is injected catoptron (8), reflex on the optical screen (2) through catoptron (8), i.e. the luminous point that produces by tuning fork (15) upper reflector (10).Four support screw (16) are installed at four angles at base plate (4) respectively.Simultaneously, to the moving of resonance Instrument, go up welding upper handle (23) and handle (24) for the ease of the user at base plate (4).
It is light source that laser pen adopts the ruby laser (being called laser pen herein) that volume is little, output power is 1mW.A rotary laser switch adjusting screw (22) is opened laser pen (1), adjust the elevation angle adjusting screw of laser pen, optical element frame folder, make laser beam irradiation to the catoptron (9) that is affixed on tuning fork (14) fork branch, through catoptron, after the reflection and transmission of optical elements such as beam-splitter, produce on the optical screen by luminous point down, by under luminous point be to be affixed on catoptron (a 9) generation that tuning fork (14) pitches; By last luminous point is the luminous point (this process teacher also can finish in debugging before the class) that is affixed on catoptron (10) generation of tuning fork (15) fork branch.
During the propagation of teacher's sound in lecturing medium, need the experiment of demonstration tuning fork vibration, can be in advance with produce by the catoptron (10) on tuning fork (15) the fork branch of last luminous point cover (make only occur on the optical screen that tuning fork (14) upper reflector (9) produced by under luminous point), knock tuning fork (14), because the vibration of tuning fork, make the luminous point that tuning fork (14) upper reflector (9) produces (by under luminous point) on optical screen, produce and beat, thereby can prove that tuning fork (14) is vibrating.
The teacher needs the experiment of demonstration tuning fork sympathetic response when lecturing resonance of the voice, the teacher can illustrate in advance with coming the demonstrating resonance phenomenon by last luminous point.During operation, can be in advance with produce by the catoptron (10) on last that tuning fork (15) to luminous point cover (make only occur on the optical screen by under luminous point), knock another tuning fork (14) then, because resonance effect, make to produce and produce vibration by last that tuning fork (15) to luminous point, the teacher can entangle the tuning fork (14) that was knocked just now with a rubber band, take away the veil on another tuning fork (15) upper reflector (10) then, at this moment leaning on last luminous point to produce on the optical screen beats, and starting of oscillation tuning fork (14) thus owing to stopped vibration by having been put a rubber band, therefore by under luminous point stopped beating, thereby can prove the vibration of tuning fork (15), be owing to knock due to tuning fork (14) resonance of the voice, demonstrated the resonance effect of tuning fork thus.
Claims (5)
1. the tuning fork resonance Instrument that laser pen is a light source is characterized in that it comprises laser pen, optical screen, beam-splitter, catoptron, the tuning fork that posts catoptron, resonant tank, base plate; The tuning fork that posts catoptron is installed on the resonant tank, and laser pen is installed in the right side of base plate; All the other transmissions according to light beam, reflective relation are installed in the relevant position of base plate: laser beam at first is radiated on the catoptron (9), and is reflected onto on the catoptron (7), reflexes on the beam-splitter (11) through catoptron (7); Be mapped on the optical screen (3) through beam-splitter (11) reflected light, and transmitted light is to beam-splitter (12); Light beam will be once more by transmission, reflection, and wherein transmitted ray is mapped on the optical screen (2), and reflection ray reflexes on the beam-splitter (13) light after catoptron (10) reflection; Light is divided into reflection ray and transmitted ray with another, and wherein reflection ray is mapped on the optical screen (3), and transmitted ray is injected catoptron (8), reflexes on the optical screen (2) through catoptron (8).
2. the tuning fork resonance Instrument that laser pen according to claim 1 is a light source is characterized in that: laser pen, optical screen, beam-splitter, catoptron are to be installed on the base plate by adjustable optical element support.
3. the tuning fork resonance Instrument that laser pen according to claim 2 is a light source, it is characterized in that: laser pen is installed on adjustable optical element support by adjustable apparatus, and adjustable apparatus is made of laser pen sleeve pipe, laser pen switch adjusting screw, laser pen elevation angle adjusting screw; With packing ring laser pen is installed in the laser pen sleeve pipe; Below the laser pen sleeve pipe, laser pen elevation angle adjusting screw, laser pen switch adjusting screw are installed respectively with the side.
4. the tuning fork resonance Instrument that laser pen according to claim 2 is a light source is characterized in that: optical screen, beam-splitter, catoptron are to be installed on adjustable optical element support by optical element frame folder.
5. the tuning fork resonance Instrument that laser pen according to claim 1 is a light source is characterized in that: the catoptron on the tuning fork (9), (10) are the catoptrons made from identical material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026686 CN2828976Y (en) | 2005-07-15 | 2005-07-15 | Tuning fork resonance tester using caser pen as light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026686 CN2828976Y (en) | 2005-07-15 | 2005-07-15 | Tuning fork resonance tester using caser pen as light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2828976Y true CN2828976Y (en) | 2006-10-18 |
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ID=37080528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520026686 Expired - Fee Related CN2828976Y (en) | 2005-07-15 | 2005-07-15 | Tuning fork resonance tester using caser pen as light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2828976Y (en) |
Cited By (4)
| 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 |
| CN105825750A (en) * | 2016-05-28 | 2016-08-03 | 陈显盈 | Tuning fork resonance and vibration image demonstration instrument |
| CN105931538A (en) * | 2016-06-02 | 2016-09-07 | 陈显盈 | Double-tuning-fork resonance demonstrator |
| CN106530912A (en) * | 2016-12-28 | 2017-03-22 | 盐城师范学院 | Laser oscillographic type sound wave demonstration device |
-
2005
- 2005-07-15 CN CN 200520026686 patent/CN2828976Y/en not_active Expired - Fee Related
Cited By (6)
| 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 |
| WO2015010583A1 (en) * | 2013-07-23 | 2015-01-29 | 湖州文思必得科教仪器有限公司 | Tuning fork vibration demonstrator |
| CN105825750A (en) * | 2016-05-28 | 2016-08-03 | 陈显盈 | Tuning fork resonance and vibration image demonstration instrument |
| CN105931538A (en) * | 2016-06-02 | 2016-09-07 | 陈显盈 | Double-tuning-fork resonance demonstrator |
| CN106530912A (en) * | 2016-12-28 | 2017-03-22 | 盐城师范学院 | Laser oscillographic type sound wave demonstration device |
| CN106530912B (en) * | 2016-12-28 | 2022-10-04 | 盐城师范学院 | Laser oscillography type sound wave demonstration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |