CN204422415U - For the equal-thickness interference experimental device of college physics teaching - Google Patents
For the equal-thickness interference experimental device of college physics teaching Download PDFInfo
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- CN204422415U CN204422415U CN201520111988.9U CN201520111988U CN204422415U CN 204422415 U CN204422415 U CN 204422415U CN 201520111988 U CN201520111988 U CN 201520111988U CN 204422415 U CN204422415 U CN 204422415U
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- glass
- isosceles trapezoid
- interference
- parallel light
- sheet glass
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Abstract
The utility model discloses a kind of equal-thickness interference experimental device for college physics teaching, comprise measurement mechanism and interference device, measurement mechanism is made up of sodium lamp, parallel light tube and reading microscope, interference device is made up of isosceles trapezoid glass, sheet glass and the rectangular tank for holding testing liquid, be provided with Height Adjustable support below described parallel light tube, the object lens of described reading microscope be fixed with the reflective slide that can move horizontally with lens barrel; The length and width degree of described isosceles trapezoid glass is provided with the square platform for support plate glass with the identical of sheet glass, middle part.The utility model is easy to operate, the monochromatic collimated beam utilizing sodium lamp and parallel light tube to produce irradiates interference device, interference fringe is formed by " V " shape film of two between isosceles trapezoid glass and sheet glass, reproducible, can accurately measure various liquid refractivity.
Description
Technical field
The utility model relates to a kind of Physical Experiment measurement mechanism, particularly relates to a kind of equal-thickness interference experimental device for college physics teaching.
Background technology
At present, in general physics of college equal thickness interference experiment, measuring the conventional method of liquid refractivity is by light beam oblique fire to liquid surface, and by measuring incident angle and refraction angle, recycling refraction law calculates the refractive index of liquid.This method is often accurate not when taking measurement of an angle, and repeatability is also poor, brings error to the measurement of refractive index.
Utility model content
The purpose of this utility model is to overcome the above problem that prior art exists, and provides a kind of equal-thickness interference experimental device for college physics teaching, easy to operate, reproducible, can accurately measure various liquid refractivity.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of equal-thickness interference experimental device for college physics teaching, comprise measurement mechanism and interference device, measurement mechanism is made up of sodium lamp, parallel light tube and reading microscope, interference device is made up of isosceles trapezoid glass, sheet glass and the rectangular tank for holding testing liquid, be provided with Height Adjustable support below described parallel light tube, the object lens of described reading microscope be fixed with the reflective slide that can move horizontally with lens barrel; The length and width degree of described isosceles trapezoid glass is provided with the square platform for support plate glass with the identical of sheet glass, middle part.
Further, the length of described isosceles trapezoid glass and sheet glass is 3 times of width.
The beneficial effects of the utility model are:
The utility model is easy to operate, and the directional light utilizing sodium lamp and parallel light tube to produce irradiates interference device, forms interference fringe by " V " shape film of two between isosceles trapezoid glass and sheet glass, reproducible, can accurately measure various liquid refractivity.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of embodiment of the present utility model;
Fig. 2 is the structural representation of isosceles trapezoid glass of the present utility model and sheet glass;
Number in the figure illustrates: 1-sodium lamp, 2-parallel light tube, 21-support, 3-reading microscope, 31-lens barrel, the reflective slide of 32-, 4-interference device, 41-container, 42-isosceles trapezoid glass, 43-sheet glass.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
As depicted in figs. 1 and 2, a kind of equal-thickness interference experimental device for college physics teaching, comprise measurement mechanism and interference device, measurement mechanism is made up of sodium lamp 1, parallel light tube 2 and reading microscope 3, interference device 4 is made up of isosceles trapezoid glass 42, sheet glass 43 and the rectangular tank 41 for holding testing liquid, be provided with Height Adjustable support 21 below described parallel light tube 2, the object lens of described reading microscope 3 be fixed with the reflective slide 32 that can move horizontally with lens barrel 31; The length and width degree of described isosceles trapezoid glass 42 is provided with the square platform for support plate glass 43 with the identical of sheet glass 43, middle part.
Further, above-mentioned isosceles trapezoid glass 42 and the length of sheet glass 43 are 3 times of width.
The principle of work of the present embodiment is as follows:
Platform is provided with in the middle part of isosceles trapezoid glass 42, can support plate glass 43 preferably, be convenient to student and build " V " shape film; The incident direction of directional light is consistent with the translation direction of lens barrel 31, adjusts the incident direction angle at 45 ° of reflective slide 32 and directional light, can remain on like this to move directional light in survey process and impinge perpendicularly on " V " shape film all the time, keeps invariable incident angle; When measuring the refractive index of liquid, isosceles trapezoid glass 42 and sheet glass 43 are put into container 41, pour appropriate testing liquid in container 41, liquid level is made just to flood sheet glass 43, the directional light utilizing sodium lamp 1 and parallel light tube 2 to produce irradiates interference device, form interference fringe by " V " shape film, the spacing utilizing reading microscope 3 can measure interference fringe, and then calculate the refractive index of testing liquid.
Claims (2)
1. the equal-thickness interference experimental device for college physics teaching, comprise measurement mechanism and interference device, measurement mechanism is by sodium lamp (1), parallel light tube (2) and reading microscope (3) composition, interference device (4) is by isosceles trapezoid glass (42), sheet glass (43) and rectangular tank (41) composition for holding testing liquid, it is characterized in that: described parallel light tube (2) below is provided with Height Adjustable support (21), the object lens of described reading microscope (3) are fixed with the reflective slide (32) that can move horizontally with lens barrel (31), the length and width degree of described isosceles trapezoid glass (42) and the identical of sheet glass (43), middle part is provided with the square platform for support plate glass (43).
2. the equal-thickness interference experimental device for college physics teaching according to claim 1, is characterized in that: described isosceles trapezoid glass (42) is 3 times of width with the length of sheet glass (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520111988.9U CN204422415U (en) | 2015-02-10 | 2015-02-10 | For the equal-thickness interference experimental device of college physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520111988.9U CN204422415U (en) | 2015-02-10 | 2015-02-10 | For the equal-thickness interference experimental device of college physics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204422415U true CN204422415U (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520111988.9U Expired - Fee Related CN204422415U (en) | 2015-02-10 | 2015-02-10 | For the equal-thickness interference experimental device of college physics teaching |
Country Status (1)
| Country | Link |
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| CN (1) | CN204422415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928819A (en) * | 2020-07-31 | 2020-11-13 | 西南交通大学 | Instrument for horizontal detection and horizontal detection method |
-
2015
- 2015-02-10 CN CN201520111988.9U patent/CN204422415U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928819A (en) * | 2020-07-31 | 2020-11-13 | 西南交通大学 | Instrument for horizontal detection and horizontal detection method |
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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: 20150624 Termination date: 20160210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |