CN219759010U - Light diffuse reflection and tyndall effect demonstration device - Google Patents
Light diffuse reflection and tyndall effect demonstration device Download PDFInfo
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- CN219759010U CN219759010U CN202222347542.9U CN202222347542U CN219759010U CN 219759010 U CN219759010 U CN 219759010U CN 202222347542 U CN202222347542 U CN 202222347542U CN 219759010 U CN219759010 U CN 219759010U
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- tyndall effect
- reflection
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- 230000000694 effects Effects 0.000 title claims abstract description 39
- 239000004744 fabric Substances 0.000 claims abstract description 8
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- 235000013312 flour Nutrition 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000843 powder Substances 0.000 description 11
- 239000000077 insect repellent Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000172 allergic effect Effects 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model belongs to the technical field of teaching demonstration devices. The diffuse reflection of light and the demonstration device of the Tyndall effect comprise a container, a light source and a light reflection medium arranged in the container; the container is provided with a light reflection medium feeding port and a light emitting port, and the light emitting port is provided with a filter cloth. The utility model solves the technical problems of complex structure, high manufacturing cost and complex operation of the existing demonstration device.
Description
Technical Field
The utility model relates to the technical field of teaching demonstration devices, in particular to a demonstration device for the diffuse reflection phenomenon and the Tyndall effect of light of junior physics.
Background
In recent years, an increasing number of physical teaching demonstration apparatuses for middle school with respect to knowledge points of reflection phenomenon of light are applied to middle school class. The demonstration devices greatly improve the ability of students to master the knowledge about light and drive the learning interests of the students.
The diffuse reflection phenomenon of light and the tyndall effect are two important points of knowledge about light reflection. For a long time, students observe that the tyndall effect is mostly only ever available in nature. The diffuse reflection phenomenon of light also mostly stays in the abstract teaching concept of the teacher. At present, no demonstration device can intuitively and vividly demonstrate the diffuse reflection phenomenon and the tyndall effect of light to students.
The chinese patent specification of publication No. CN206532504U discloses a light reflection demonstrator which emits a light beam to the ignited mosquito-repellent incense smoke by a laser pen, so as to see the tyndall effect of the incident light and the reflected light, i.e., the light traces of the incident light and the reflected light. And then through rotating the carousel part for incident light and plane mirror's contained angle change, demonstrate the physical phenomenon that the incident angle of light and reflection angle are equal, but it can't have the diffuse reflection of demonstration light and tyndall effect simultaneously. The light reflection demonstrator disclosed in the Chinese patent specification of bulletin No. CN206532504U requires mosquito-repellent incense smoke in the demonstration process, and when the mosquito-repellent incense smoke is demonstrated in a classroom, the mosquito-repellent incense smoke can influence the physical health of students, and is particularly unfriendly to the students with allergic physique. In addition, it includes support part, carousel part, speculum part, laser pen, and the reflection demonstrator of whole light is total to include 23 spare parts, and the structure is complicated, and the cost of manufacture is high, when demonstration: firstly, the organic glass plate needs to be taken down, secondly, the ignited fuming mosquito-repellent incense is installed, the fuming baffle plate and the rubber ring are installed, and the even distribution of the smoke of the fuming mosquito-repellent incense in the turntable part disc is waited for: secondly, operating the laser pen; finally, operating the turntable; the whole demonstration process is complex in operation, and is difficult to popularize to schools in the area behind the economy.
The publication number CN206148032U discloses a light reflection demonstration device, which demonstrates light beam twice reflection to students through a laser light source capable of adjusting incident light angle and two reflectors, so that students can understand light reflection knowledge more intuitively and vividly. The light reflection demonstration device disclosed in CN206148032U can only demonstrate the reflection phenomenon of light beams, but cannot demonstrate the diffuse reflection phenomenon and the tyndall effect phenomenon of light.
The publication number CN206685027U discloses a light reflection test demonstration device, which emits light to a reflector through a laser light source capable of adjusting the angle of incident light, and both the incident light and the reflected light pass through a transparent colloid, so that a light trace, namely, the tyndall effect, is formed in the colloid. The light reflection test demonstration device disclosed in CN206685027U can only demonstrate the reflection phenomenon and the tyndall effect phenomenon of light beams, but cannot demonstrate the diffuse reflection phenomenon of light.
The publication number CN213070305U discloses a physical experiment instrument for middle school students, which can simultaneously demonstrate the related principles of a ammeter, a pulley and a lever and the principles of an optical part, and the practicability of optical demonstration is shown in the demonstration process of the phenomena of light reflection and diffuse reflection; CN213070305U is provided with a smooth reflecting plate and a diffuse reflecting plate with protruding blocks on the surface inside the box, by switching on the power supply of the lamp, the light source irradiates on the reflecting plate and the diffuse reflecting plate, demonstrating the reflection and diffuse reflection phenomena of light; CN206685027U cannot demonstrate the tyndall effect phenomenon.
The devices disclosed in the above CN206532504U, CN206148032U, CN206685027U are all provided with optical path angle adjusting devices. As is well known, the bearings, rotary seats, etc. required for the adjusting devices all require a certain degree of precision in the installation process, and require expensive mold costs, design costs, installation costs, etc. The structure of the device is complex, the manufacturing cost is high, and the device is difficult to popularize in schools in areas with economic lags. CN206685027U is specially arranged to demonstrate the physical phenomena related to optics, electricity and mechanics, and has the disadvantages of complex structure and high manufacturing cost.
None of the devices disclosed in the above-mentioned CN206532504U, CN206148032U, CN206685027U and CN213070305U can exhibit both diffuse reflection of light and the tyndall effect.
Disclosure of Invention
The utility model aims to provide a light diffuse reflection and Tyndall effect demonstration device, which solves the technical problems that the existing light demonstration device cannot be used for demonstrating the light diffuse reflection and the Tyndall effect, and is complex in structure, high in manufacturing cost and complex in operation.
In order to solve the technical problems, the utility model adopts the following technical proposal that the device for demonstrating diffuse reflection of light and the Tyndall effect is characterized by comprising a container, a light source and a light reflection medium arranged in the container; the container is provided with a light reflection medium feeding hole and a light emission inlet, and the light reflection medium feeding hole is provided with a sealing device; the light inlet is provided with a light source.
The demonstration device has the advantages of simple structure, low manufacturing cost and easy operation, can intuitively and vividly present the diffuse reflection phenomenon of light and the tyndall effect, has attractive, clear and intuitive demonstration effect, and has low cost and convenient material acquisition.
In order to solve the technical problem of high price of a container, the utility model adopts the following technical scheme that the container is a two-mouth flat-bottom flask. The two flat bottom glass bottles are used as the main body of the device for containing the flour as the light reflection medium, and the cost is low.
In order to solve the technical problem that the existing demonstration device has adverse effect on the physical health of students, the utility model adopts the following technical scheme that the light reflection medium is flour.
The reflecting medium of the utility model abandons colloid, smog and the like disclosed in the prior patent as the light reflecting medium, and adopts the density less than 0.6g/cm instead 3 A low cost, readily available flour that is incorporated into the body of the presentation device to act as a light reflecting medium. Because of the small density of the flour, the device can float in the main body space of the demonstration device by slightly shaking the device, thereby providing a multi-point reflection source for light reflection.
In order to solve the technical problem that flour powder escapes from a light source injection port of a laser pen to classroom air, the utility model adopts the following technical scheme that an adapter is arranged on the light injection port, and a filter screen is sequentially arranged on the adapter. The main purpose of the arrangement of the adapter is to add a filter screen which is used for isolating powder on the inner surface of the main body of the device and the laser pen and preventing the powder from escaping into the air in a classroom from the light source injection port of the laser pen.
In order to solve the technical problem of light source sources, the utility model adopts the following technical scheme that the light source is a laser pen, so that the purchase is convenient and the cost is low.
In order to solve the technical problem that the light reflection medium is inconvenient to enter the container, the utility model adopts the following technical scheme that the caliber of the light reflection medium feeding hole is larger than that of the light emitting hole. By increasing the aperture of the light reflection medium feed inlet, the light reflection medium can smoothly enter the container.
In order to solve the technical problem that flour powder escapes into the air of a classroom, the utility model adopts the following technical scheme that the sealing device on the light reflection medium feeding port is a glass plug, so that the flour powder is prevented from escaping into the air of the classroom during demonstration.
In order to solve the technical problem of how to fix the filter screen, the utility model adopts the following technical scheme that the filter screen is arranged on the small-mouth screw tooth glass sleeve through the plastic nut. The plastic nut plays a role in fixing the filter screen, and is convenient to use.
In order to solve the technical problem of high cost of the filter screen, the utility model adopts the following technical scheme, and the filter screen is filter cloth, so that the purchase is convenient and the cost is low.
Drawings
FIG. 1 is a schematic diagram of a device for demonstrating diffuse reflection of light and the Tyndall effect of the present utility model;
FIG. 2 is a schematic diagram of the structure of an adapter of the light diffuse reflection and Tyndall effect demonstration device of the present utility model;
in the figure: 1-a container, 101 a light reflective medium feed port, 102 a light entry port; 103-adapter; 104-sealing device, 105-plastic nut, 106-filter screen, 2-light source, 3-light reflection medium.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-2, the device for demonstrating diffuse reflection of light and the tyndall effect comprises a container 1, a light source 2 and a light reflecting medium 3.
The container 1 was a two-necked flat bottom flask. The two flat bottom glass bottles are device bodies and are used for containing light reflection media. The container is provided with a light reflecting medium inlet 101 and a light inlet 102. The aperture of the light reflecting medium inlet 101 is larger than the aperture of the light inlet 102.
A sealing means 104, preferably a glass plug, is provided on the light reflecting medium feed opening 101. The large-mouth glass plug is a bottle mouth plug of the device main body, and can prevent the molecular crystal powder from escaping into the air of a classroom during demonstration.
A light reflecting medium 2 is placed in the container 1. The light-reflecting medium is preferably flour. The light reflecting medium adopted by the utility model is flour.
The light source 3 is provided at the light inlet 102. The light source is preferably a laser, in particular a laser pen. Preferably, the light inlet 102 is provided with an adapter 103, and the adapter 103 is provided with a filter 106 in sequence. The filter screen is used for isolating organic molecular crystal powder and the laser pen in the device main body and preventing the organic molecular crystal powder from escaping into the air of a classroom from the light source injection port of the laser pen. The adapter 103 is a small-mouth screw glass sleeve. The small-mouth screw tooth glass sleeve is a light source injection port of a laser pen of the device main body.
The filter screen 106 is preferably a filter cloth. The filter screen 106 is arranged on the small-mouth screw tooth glass sleeve through the plastic nut 105. The plastic screw 105 is used for fixing the filter screen.
The reflecting medium of the utility model abandons colloid, smog and the like disclosed in the prior patent as the light reflecting medium, and adopts the density less than 0.6g/cm instead 3 Is incorporated into the body of the play set to act as a light reflecting medium. Because the flour has small density, the demonstration device can float in the main body space of the demonstration device by slightly shaking the demonstration device, thereby providing a multi-point reflection source for light reflection.
Example 2 demonstration of the tyndall effect of light
The using method of the diffuse reflection and tyndall effect demonstration device comprises the following steps:
5-10 g of flour powder as light reflecting medium was added to a flat bottom glass bottle through a large mouth, and then the large mouth glass was stoppered. The filter cloth is placed at one end of the screw tooth of the small-mouth screw tooth glass sleeve, and then the filter cloth is fixed by a plastic nut. After screwing, the small-mouth screw tooth glass sleeve is plugged into a small mouth of a flat-bottom glass bottle;
the bottle body is gently shaken, so that after the powder in the bottle floats in the space in the bottle, a laser pen switch is turned on, and light is injected into the bottle from the filter cloth at the upper end of the small-mouth screw glass sleeve. A beam of light is then observed which is due to the tyndall effect.
Example 3 demonstration of diffuse reflection of light
The using method of the diffuse reflection and tyndall effect demonstration device comprises the following steps:
the bottle body is vigorously shaken, so that after powder in the bottle fully floats in the space in the bottle, a red laser pen switch is turned on, and light is injected into the bottle from the filter cloth at the upper end of the small-mouth screw glass sleeve. The overall red bottle is then observed as a result of the diffuse reflection effect of the light.
The device can be used for demonstrating the diffuse reflection phenomenon of light and the Tyndall effect by simply controlling the shaking force of the bottle, so that the demonstrating effect is attractive, clear and visual, and the demonstrating device is low in cost and convenient to obtain materials.
The above embodiments are only for illustrating the technical features and concepts of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and implement it, and are not intended to limit the scope of the present utility model, and all equivalent changes or modifications according to the spirit and embodiments of the present utility model should be included in the scope of the present utility model.
Claims (9)
1. The device for demonstrating diffuse reflection of light and the Tyndall effect is characterized by comprising a container, a light source and a light reflection medium arranged in the container; the container is provided with a light reflection medium feeding hole and a light emission inlet, and the light reflection medium feeding hole is provided with a sealing device; a light source is arranged on the light emitting inlet; the light reflecting medium is flour.
2. The device for demonstrating diffuse reflection of light and the tyndall effect according to claim 1 wherein the container is a two-necked flat bottom flask.
3. The device for demonstrating diffuse reflection and tyndall effect of light according to claim 1, wherein the light inlet is provided with a conversion joint, and the conversion joint is provided with a filter screen in sequence.
4. The device for demonstrating diffuse reflection of light and the tyndall effect according to claim 1, wherein the light source is a laser pen.
5. The apparatus for demonstrating diffuse reflection of light and the tyndall effect according to claim 1, wherein the aperture of the light reflecting medium feed port is larger than the aperture of the light entrance port.
6. The device for demonstrating diffuse reflection of light and the tyndall effect according to claim 1 wherein the sealing means on the light reflecting medium feed port is a glass plug.
7. A light diffuse reflection and tyndall effect demonstrating device according to claim 3 wherein the adapter is a small mouth screw glass sleeve.
8. The device for demonstrating diffuse reflection of light and the tyndall effect according to claim 7 wherein said screen is mounted on a small mouth screw glass sleeve by means of a plastic nut.
9. The device for demonstrating diffuse reflection of light and the tyndall effect according to claim 8, wherein the filter screen is a filter cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222347542.9U CN219759010U (en) | 2022-09-05 | 2022-09-05 | Light diffuse reflection and tyndall effect demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222347542.9U CN219759010U (en) | 2022-09-05 | 2022-09-05 | Light diffuse reflection and tyndall effect demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219759010U true CN219759010U (en) | 2023-09-26 |
Family
ID=88071674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222347542.9U Active CN219759010U (en) | 2022-09-05 | 2022-09-05 | Light diffuse reflection and tyndall effect demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219759010U (en) |
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2022
- 2022-09-05 CN CN202222347542.9U patent/CN219759010U/en active Active
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