CN203673732U - Light refraction phenomenon demonstration teaching aid - Google Patents
Light refraction phenomenon demonstration teaching aid Download PDFInfo
- Publication number
- CN203673732U CN203673732U CN201420026161.3U CN201420026161U CN203673732U CN 203673732 U CN203673732 U CN 203673732U CN 201420026161 U CN201420026161 U CN 201420026161U CN 203673732 U CN203673732 U CN 203673732U
- Authority
- CN
- China
- Prior art keywords
- casing
- light
- teaching aid
- laser pen
- refraction
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to an optical teaching aid, and provides a light refraction phenomenon demonstration teaching aid, for solving the problems of complex operation and inconvenient teaching aid carrying during demonstration of a light refraction phenomenon by use of a conventional teaching aid. Incident light is emitted through a first laser pen to a refraction body, and the values of an incident angle and an emergence angle are read through a first angle ruler disposed at the upper portion of a casing and a second angle ruler disposed at the front wall of the casing, so that the operation is convenient, and the degree number is accurate; the light emitted by the first laser pen is enabled to be always directed to an incidence point through the rotation of a swing rod, so that the refraction phenomena in case of different incident angels can be observed, and the research into a phenomenon about a light refraction law that the ratio of the since of an incident angle to the since of an emergence angle is a constant is facilitated; and light emitter by a second laser pen arranged at the lower portion of the refraction body towards the incident point is compared to light emitted by the first laser pen, the reversibility of a refraction phenomenon can be found, and the phenomenon is visual and is easily understood.
Description
Technical field
The utility model relates to a kind of physics teaching demonstration teaching aid, specifically a kind of teaching aid of the teaching of the refraction effect for light.
Background technology
The refraction effect of light refers to that when light is slanted through another kind of medium from a kind of medium, the direction of propagation changes, thus make light from different medium intersection generation deviation.Due to light velocity of propagation difference in two kinds of different media, therefore at the intersection of two media, the direction of propagation changes.The refraction law of light: both sides are found in refracted ray and reflection ray separation; Refracted ray, incident ray and normal are in same plane; In the time that light is slanted through other medium from air, refraction angle is greater than incident angle; When light is when other medium is slanted through air, refraction angle is greater than incident angle, and the sine ratio at incident angle and refraction angle is a constant.Light is vertically injected water or when other medium, the direction of propagation is constant from air.The light refraction apparatus for demonstrating for junior middle school physics teaching that Chinese patent 2013203507201 is announced, and shows to refraction tank Emission Lasers light beam by LASER Light Source on demonstration screen.The mobile laser light catadioptric lens image-forming demonstration combination unit that Chinese patent 2012205740278 is announced, provides the device that can carry out multinomial optical phenomena demonstration.The refraction law exploring instrument based on Unit Circle Method light that Chinese patent 2013201334513 is announced, launch the light beam different from normal angle by the laser pen that moves in the circumferential direction and point to all the time the center of circle to two media interface, the lenth ratio of measuring by ruler is converted to the sinusoidal ratio at incident angle and refraction angle.The device that above-mentioned patent provides carries inconvenience when for education and instruction, and in the time of the reversible demonstration of refraction effect light path for light, demonstration is inconvenient.
Utility model content
The purpose of this utility model is the demonstration teaching aid of the refraction effect that a kind of light is provided, and for helping student to understand the refraction effect of light, and the refraction effect complex operation, the teaching aid that solve existing teaching aid demonstration light carry inconvenient problem.
The technical scheme in the invention for solving the technical problem is: a kind of refraction effect demonstration teaching aid of light, comprise casing, laser pen and refractile body, it is characterized in that, square described refractile body is embedded in the middle part of casing and the upper surface of refractile body is concordant with the upper surface of casing, upwards extend a pair of projection being symmetrically arranged at the casing upper surface that is positioned at refractile body both sides, the two ends of the first bevel protractor of half annular coordinate with described projection grafting and the center of circle of described the first bevel protractor is positioned on the refractile body plane of symmetry;
On the rear wall of described casing, be provided with a rotating fork, fix one all the time towards the first laser pen of interface and refractile body plane of symmetry intersection emission of light at the free end of described fork; In the transparent front wall of described casing, be provided with the second bevel protractor of half annular, and the center of circle of described the second bevel protractor is positioned on described intersection; Be provided with one in the bottom of described refractile body all the time towards the second laser pen of the first laser pen extended line and interface intersection point;
On the bottom of described casing and rear wall, be respectively equipped with the groove of being convenient to place fork and the first bevel protractor.
Further, on the wall of the left and right sides of described casing, be respectively equipped with folding and can provide the submerged plate of black background for demonstration refraction effect, and the upper surface of described submerged plate and casing surrounds a flute profile that front end is uncovered.
Further, described the first laser pen and the second laser pen can be launched the light of different colours.
Further, be fixed with at the free end of described fork the pointer of being convenient to read the first bevel protractor upper angle value.
Further, be provided with the counter of being convenient to calculate incident angle and emergence angle sine value on the top of described casing.
Further, on the rear wall of described casing, be provided with a stationary shaft, on described fork, be provided with the axis hole being rotatably assorted with described stationary shaft, and between described stationary shaft and axis hole, be provided with the damping piece that prevents that fork from freely rotating.
Further, described refractile body is glass block.
The beneficial effects of the utility model are: the demonstration teaching aid of the refraction effect of the light that the utility model provides, launch incident ray by the first laser pen to refractile body, after refractile body refraction, send emergent ray, by being positioned at first bevel protractor on casing top and being positioned at the second bevel protractor on casing antetheca the value that reads incident angle and emergence angle, easy to operate, the number of degrees are accurate; Make the light of the first laser pen transmitting point to all the time incidence point by the rotation of fork, refraction effect when observable different incidence angles, and be convenient to study the phenomenon that the refraction law of light is constant about the ratio of incident angle and emergence angle sine; Contrast to incidence point emission of light and with the light of the first laser pen transmitting by the second laser pen that is arranged on refractile body bottom, find the reversibility of the refraction effect of light, visual phenomenon is convenient to understand; The refraction effect that is light by folding submerged plate provides black background, is convenient to observe; After having demonstrated, fork and the first bevel protractor can be taken off and are placed in groove corresponding on casing, be convenient to deposit and avoid the pollution of dust.
Accompanying drawing explanation
Fig. 1 is front schematic view of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is that submerged plate and the casing of duty is related to schematic diagram;
Fig. 4 is that submerged plate and the casing of folded state is related to schematic diagram;
Fig. 5 is swing rod structure schematic diagram;
Fig. 6 is casing rear wall schematic diagram;
In figure: 1 casing, 11 first grooves, 12 projections, 13 second grooves, 14 stationary shaft, 15 the 3rd grooves, 2 glass blocks, 31 first bevel protractors, 32 second bevel protractors, 4 forks, 41 pointers, 42 installation portions, 421 axis holes, 43 fixed parts, 51 first laser pens, 52 second laser pens, 61 first submerged plates, 62 second submerged plates, 7 counters, 81 normals, 82 incident raies, 83 emergent raies, 9 incidence points.
Embodiment
As shown in Figures 1 to 4, the utility model comprises casing 1, glass block 2, the first bevel protractor 31, the second bevel protractor 32, fork 4, pointer 41, the first laser pen 51, the second laser pen 52, the first submerged plate 61, the second submerged plate 62 and counter 7.Demonstration teaching aid of the present utility model, has presentation state and folded state, below in conjunction with accompanying drawing, duty of the present utility model is described in detail.
As shown in Figure 1, casing 1 entirety is the working of plastics of cuboid, and the antetheca of casing is square transparent plastic article or glass workpiece, so that observe the optical phenomena in casing.Be provided with a square blind hole at the upper surface of casing, in blind hole, place the glass block 2 adapting with blind hole, and the upper surface of glass block and the upper surface of casing concordant.Upwards extend two projections that are oppositely arranged 12 at the casing upper surface of the glass block left and right sides, projection 12 is square working of plastics.In two projections 12, pegging graft the first bevel protractor 31, the first bevel protractors 31 are installed is the transparent plastic article of semicircle annular, is provided with the scale for representing angular dimension in the semi-circumference of the first bevel protractor.After the first bevel protractor is plugged in projection 12, the center of circle of the first bevel protractor is just in time positioned on the upper surface of casing.In the forearm of casing, being provided with the second bevel protractor 32, the second bevel protractors is semicircular transparent plastic article, and the circle center line connecting of the center of circle of the second bevel protractor and the first bevel protractor is respectively perpendicular to the plane at two bevel protractor places.
On casing rear wall, be provided with a stationary shaft 14, fixing axis of spindle is through how much centers of circle of bevel protractor.One fork 4 is rotating to be arranged on stationary shaft, and as shown in Figure 5, one end of fork 4 is the installation portion 42 of ┖ shape, and fork is arranged on stationary shaft by the axis hole 421 in installation portion 42 and the stationary shaft of having mercy on rotates.For preventing that fork from rotating voluntarily under Action of Gravity Field, is provided with a damping piece in the cooperation place of axis hole and stationary shaft.The other end of fork 4 is inverted U-shaped fixed part 43, and fixed part 43 links together by a straight-bar with installation portion, and the extended line of this straight-bar is through the center of circle of two bevel protractors.At non-installation end fixed installation one first laser pen 51 of fixed part.The setting of installation portion is that fork is rotating to be arranged on stationary shaft in order to make, the setting of fixed part is for the ease of fixed laser pen and avoids the first bevel protractor, the setting of middle straight-bar is the line through the center of circle of two angles in order to ensure the extension line of laser pen, and the version of fork is not limited to foregoing description.The length direction of the first laser pen 51 points to two bevel protractor circle center line connectings all the time, enters in glass block all the time with the light beam of the first laser pen transmitting in the process of guaranteeing to rotate at fork through the line in the first bevel protractor and the second bevel protractor center of circle.As shown in Figure 1, around stationary shaft rotational swing rod and make fork in a certain position, now, angle between fork and normal 81 is incident angle α, the switch of pressing the first laser pen makes the first laser pen irradiate incident ray 82, after intersecting at a point, incident ray 82 and two bevel protractor circle center line connectings enter in glass block the incidence point 9 that this point is light; Light occurs to become emergent ray 83 after deviation in glass block, and the angle between emergent ray 83 and normal 81 is emergence angle β.As can be seen from Figure, incident angle α is greater than emergence angle β, and the ratio of sin α and sin β is denoted as to n, and calculates n value now.Rotational swing rod 4, make fork in different positions to make incident angle α get different values, now read out firing angle α value by the second bevel protractor, and a series of incident angles that obtain and the sine of emergence angle are made to ratio, find by calculating, when the value of incident angle α be greater than 0 °, while being less than 90 °, no matter what value incident angle α obtains, the ratio of sin α and sin β is constant; Therefore,, in the refraction effect of light, the sine ratio of incident angle and emergence angle is constant.In the time that incident angle α equals 0 °, when incident ray 82 is perpendicular to the upper surface of glass block, emergent ray 83 overlaps with incident ray 82; Therefore in the time that incident ray overlaps with normal, there is not refraction effect.
For the refraction effect light path of probing into light is reversible, be provided with one with externally threaded blind hole in the bottom of glass block, in this blind hole, be threaded connection one second laser pen 52, the second laser pen 52 can be launched the light beam different from the first laser pen transmitting light beam color, the light beam of the second laser pen transmitting is through incidence point 9, and the emergent ray of the light of assurance the first laser pen transmitting after refraction overlaps with the second laser pen.The first laser pen 51 is launched incident ray 82, reflects emergent ray 83 after incidence point 9; The second laser pen 52 launch incident ray 82 ', after incidence point 9, reflect emergent ray 83 '; Because the second laser pen overlaps with emergent ray 83, i.e. incident ray 82 ' overlap with emergent ray 83, now finds emergent ray 83 ' overlap with incident ray 82.Therefore,, in the refraction effect of light, light path is reversible.And when light enters air from other medium (as glass), incident angle is less than refraction angle.
For ease of the observation of refraction effect, on the left and right side of casing, be respectively equipped with the second groove 13, folding respectively in two second grooves 13 have the first submerged plate 61 and the second submerged plate 62, two submerged plates to be the rectangular paperboard of surperficial blacking.The first submerged plate 61 and the second submerged plate 62 are pulled out and make it in the state shown in Fig. 3 from the second groove.Between two submerged plates and casing upper surface, form uncovered square of one side, observe refraction effect by open-mouth, and black background on submerged plate can make people clearly observe refraction effect.
Below folded state of the present utility model and architectural feature thereof are described.The first submerged plate and the second submerged plate folded and be returned to respectively in the second groove, the first bevel protractor is taken off from bumps, then putting into the 3rd groove 15 that is arranged in casing rear wall upper semi-circle annular.Fork and the first laser pen thereof are taken off and put into from casing rear wall the first groove 11, the first grooves that are arranged on casing forearm identical with fork shape, and the first groove can hold fork and the first laser pen.Now, the first laser pen, the first submerged plate, the second submerged plate, the first bevel protractor and fork are all folded in casing, so that preserve and avoid the pollution of dust.For ease of calculating the sine value at incident angle and refraction angle, be provided with the counter 7 being embedded on casing upper surface on the top of casing.
Claims (7)
1. the refraction effect demonstration teaching aid of a light, comprise casing, laser pen and refractile body, it is characterized in that, square described refractile body is embedded in the middle part of casing and the upper surface of refractile body is concordant with the upper surface of casing, upwards extend a pair of projection being symmetrically arranged at the casing upper surface that is positioned at refractile body both sides, the two ends of the first bevel protractor of half annular coordinate with described projection grafting and the center of circle of described the first bevel protractor is positioned on the refractile body plane of symmetry;
On the rear wall of described casing, be provided with a rotating fork, fix one all the time towards the first laser pen of interface and refractile body plane of symmetry intersection emission of light at the free end of described fork; In the transparent front wall of described casing, be provided with the second bevel protractor of half annular, and the center of circle of described the second bevel protractor is positioned on described intersection; Be provided with one in the bottom of described refractile body all the time towards the second laser pen of the first laser pen extended line and interface intersection point;
On the bottom of described casing and rear wall, be respectively equipped with the groove of being convenient to place fork and the first bevel protractor.
2. the refraction effect demonstration teaching aid of a kind of light according to claim 1, it is characterized in that, on the wall of the left and right sides of described casing, be respectively equipped with folding and can provide the submerged plate of black background for demonstration refraction effect, and the upper surface of described submerged plate and casing surrounds a flute profile that front end is uncovered.
3. the refraction effect demonstration teaching aid of a kind of light according to claim 2, is characterized in that, described the first laser pen and the second laser pen can be launched the light of different colours.
4. the refraction effect demonstration teaching aid of a kind of light according to claim 3, is characterized in that, is fixed with the pointer of being convenient to read the first bevel protractor upper angle value at the free end of described fork.
5. the refraction effect demonstration teaching aid of a kind of light according to claim 4, is characterized in that, is provided with the counter of being convenient to calculate incident angle and emergence angle sine value on the top of described casing.
6. the refraction effect demonstration teaching aid of a kind of light according to claim 5, it is characterized in that, on the rear wall of described casing, be provided with a stationary shaft, on described fork, be provided with the axis hole being rotatably assorted with described stationary shaft, and between described stationary shaft and axis hole, be provided with the damping piece that prevents that fork from freely rotating.
7. the refraction effect demonstration teaching aid of a kind of light according to claim 6, is characterized in that, described refractile body is glass block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026161.3U CN203673732U (en) | 2014-01-16 | 2014-01-16 | Light refraction phenomenon demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026161.3U CN203673732U (en) | 2014-01-16 | 2014-01-16 | Light refraction phenomenon demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203673732U true CN203673732U (en) | 2014-06-25 |
Family
ID=50970000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420026161.3U Expired - Fee Related CN203673732U (en) | 2014-01-16 | 2014-01-16 | Light refraction phenomenon demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203673732U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894927A (en) * | 2016-06-28 | 2016-08-24 | 成都育芽科技有限公司 | Physical experiment demonstrator |
| CN106023754A (en) * | 2016-07-30 | 2016-10-12 | 董亚伦 | Refraction teaching demonstration device of light |
| CN106770036A (en) * | 2017-01-11 | 2017-05-31 | 裴钊 | Refractive index measuring instrument |
| CN107358853A (en) * | 2017-09-19 | 2017-11-17 | 陈宇卓 | A kind of refraction apparatus for demonstrating of light |
| CN107393387A (en) * | 2017-07-21 | 2017-11-24 | 陕西镇安华兴特色农产品开发有限公司 | A kind of device of relatively optical glass refractive index size |
-
2014
- 2014-01-16 CN CN201420026161.3U patent/CN203673732U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894927A (en) * | 2016-06-28 | 2016-08-24 | 成都育芽科技有限公司 | Physical experiment demonstrator |
| CN105894927B (en) * | 2016-06-28 | 2019-04-09 | 新昌县澄聚农业科技有限公司 | A kind of physical experiment demonstration device |
| CN106023754A (en) * | 2016-07-30 | 2016-10-12 | 董亚伦 | Refraction teaching demonstration device of light |
| CN106023754B (en) * | 2016-07-30 | 2019-03-15 | 董亚伦 | The refraction teaching demonstration device of light |
| CN106770036A (en) * | 2017-01-11 | 2017-05-31 | 裴钊 | Refractive index measuring instrument |
| CN106770036B (en) * | 2017-01-11 | 2024-08-30 | 裴钊 | Refractive index measuring instrument |
| CN107393387A (en) * | 2017-07-21 | 2017-11-24 | 陕西镇安华兴特色农产品开发有限公司 | A kind of device of relatively optical glass refractive index size |
| CN107358853A (en) * | 2017-09-19 | 2017-11-17 | 陈宇卓 | A kind of refraction apparatus for demonstrating of light |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203673732U (en) | Light refraction phenomenon demonstration teaching aid | |
| CN104167142A (en) | Multifunctional optical experiment instrument | |
| CN205609077U (en) | Deflection law presentation device | |
| CN202736366U (en) | Transparent liquid refractive index measuring instrument | |
| CN204514216U (en) | A kind of slide calliper rule protractor | |
| CN205468137U (en) | Mathematics plotter | |
| CN207198037U (en) | A kind of instrument for determining index of refraction of liquid | |
| CN2929710Y (en) | Refraction index meter | |
| CN205692446U (en) | A kind of liquid refracting demonstration teaching aid assembly | |
| US8206155B2 (en) | Trigonometry teaching aid system | |
| CN206349045U (en) | A kind of Middle School Physics optical demonstration instrument | |
| CN103761914A (en) | Light reflection law demonstration teaching instrument | |
| CN204451731U (en) | Photoelectricity angle equal divider | |
| CN203337123U (en) | Metope height measuring and marking device | |
| CN206774071U (en) | Multifunctional physics teaching experimental provision | |
| CN211719137U (en) | Total reflection demonstration teaching aid | |
| CN2929871Y (en) | Novel multifunction optical test board | |
| CN206249746U (en) | Physics convex lens imaging demonstration device | |
| CN213042520U (en) | Comprehensive experiment instrument for geometric optics experiment | |
| CN201666973U (en) | Narrow-width linear optical light generation and translation optical system | |
| CN204422415U (en) | For the equal-thickness interference experimental device of college physics teaching | |
| CN204576934U (en) | For the light path apparatus for demonstrating of optics teaching | |
| CN205112778U (en) | Multi -functional protractor is used to mathematics | |
| CN204359215U (en) | Protractor in a kind of mathematical education | |
| CN208985493U (en) | A kind of reflection of light, refraction experimental instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20150116 |
|
| EXPY | Termination of patent right or utility model |