CN105957430A - Bicolor linearly-polarized light Brewster's law demonstration instrument - Google Patents
Bicolor linearly-polarized light Brewster's law demonstration instrument Download PDFInfo
- Publication number
- CN105957430A CN105957430A CN201610515181.0A CN201610515181A CN105957430A CN 105957430 A CN105957430 A CN 105957430A CN 201610515181 A CN201610515181 A CN 201610515181A CN 105957430 A CN105957430 A CN 105957430A
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- CN
- China
- Prior art keywords
- fixed
- semiconductor laser
- turning arm
- stand column
- brewster
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/22—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for optics
Abstract
The invention provides a bicolor linearly-polarized light Brewster's law demonstration instrument, which utilizes two beams of equal-intensity bicolor linearly-polarized light (with a vibration direction parallel to an incident surface and a vibration direction perpendicular to the incident surface) to replace natural light for observing a phenomenon of the Brewster's law, and can be used for measuring a refractive index of a transparent medium. The bicolor linearly-polarized light Brewster's law demonstration instrument comprises a central stand column, wherein the central stand column is fixed on a square base, a dial is fixed on the central stand column, three rotating arms are connected with the central stand column via centre holes, one rotating arm fixes semiconductor laser devices, polarizing plates and a rotating arm positioning pointer, the other two rotating arms each fix a receiving screen and a rotating arm positioning pointer, the semiconductor laser devices, the polarizing plates, the receiving screens and the rotating arm positioning pointers are fixed on a vertical central line of the corresponding rotating arm, the two semiconductor laser devices are longitudinally arranged on the rotating arm and select visible light sources with different wavelengths, the two polarizing plates are fixed at the front ends of the two semiconductor laser devices by using glue, two fixed clamping plates are installed on the dial through bolts, and a transparent medium film pile is placed between the two fixed clamping plates.
Description
Technical field
The present invention relates to a kind of Double-colour horn wire polarized light Brewster law demonstrator, belong to a kind of wave optics
Demonstration instrument.
Background technology
Brewster's law is one of most important theories in College physics course about wave optics.This law
Point out that it is flat that reflection light can become vibration when natural light is with brewster angle incidence to two media separating surface
Face is perpendicular to the line polarized light of the plane of incidence, and it is stronger that refraction light is that the plane of oscillation is parallel to the light intensity of the plane of incidence
Partial polarized light.According to Brewster's law, it is inferred that when light with brewster angle incidence to glass
During sheet heap, refraction light can also become line polarized light.
Theory described by this law and phenomenon are that student is daily cannot be observed, and required is drilled by certain
Show that instrument measures phenomenon therein by student views, help student to understand physical theory.
The instrument of the Brewster's law of major part demonstration at present primarily focuses on to be observed instead by rotatory polarization sheet
Penetrating the polarization state of light, the problem existed is not easy to allow students observe phenomenon on classroom exactly simultaneously.
Summary of the invention
For the purpose allowing students that the phenomenon of Brewster's law is observed on classroom, profit simultaneously
Two bundles can be expressed as equicohesive with natural light, the thought of the orthogonal line polarized light of direction of vibration,
The present invention restraints equicohesive direction of vibration with two and is parallel to the plane of incidence and is perpendicular to the Double-colour horn wire polarization of the plane of incidence
Light replaces nature light to incide on transparent dielectric slab (heap), by two kinds of light of observation reflection light-receiving screen,
The change of light intensity on refraction light-receiving screen, the phenomenon of demonstration Brewster's law.
The technical scheme is that and realize in the following manner:
A kind of Double-colour horn wire polarized light Brewster law demonstrator, it is characterised in that: this Brewster is demonstrated
Instrument comprises base 1, graduated disc 2, receiving screen 3, semiconductor laser 4, polaroid 5, transparent dielectric slab
Heap 6, turning arm 7, adjustment bolt 8, strap 9, ambulatory splint 10, center stand column 11, rotation
Arm positioning pointer 12；Center stand column 11 is fixed on above square base 1, and graduated disc 2 is fixed on center
Above column 11, three turning arms 7 are connected with center stand column 11 by centre bore, and one of them rotates
Arm 7 fixes semiconductor laser 4, polaroid 5 and turning arm positioning pointer 12, two other turning arm 7
Fixed reception screen 3 and turning arm positioning pointer 12, semiconductor laser 4, polaroid 5, receiving screen respectively
3 and turning arm positioning pointer 12 be each attached on the vertical centrage of turning arm 7, two semiconductor lasers
Device 4 is genesis analysis, is fixed on turning arm 7, and different wave length selected by two semiconductor lasers 4
Visible light source, two polaroids 5 are fixed on two bundle semiconductor laser 4 front ends, Qi Zhongyi by glue
Individual polaroid 5 polarization direction is vertical direction, and another polaroid 5 polarization direction is horizontal direction,
By bolt, two straps 9 are installed on graduated disc 2, between two straps, place transparent dielectric slab
Heap 6, promotes ambulatory splint 10 to be fixed transparent dielectric slab heap 6 by adjusting bolt 8.
The visible light source of different wave length selected by two semiconductor lasers 4, incides after polaroid 5
The plane of polarization of the line polarized light of transparent dielectric slab heap 6 is respectively parallel to and is perpendicular to the plane of incidence.Transparent medium
The normal direction of sheet heap 6 is along 90 ° of angular direction of graduated disc 2, and the light of semiconductor laser 4 is to transparent Jie
Angle of incidence, angle of reflection and the refraction angle of matter sheet heap 6 is indicated on graduated disc 2 by turning arm positioning pointer 12,
And can directly verify that reflecting light when observation meets Brewster's law is perpendicular to reflect light.
This demonstration instrument has the effect that
1) when semiconductor laser light to transparent dielectric slab heap angle of incidence equal to Brewster's angle time, instead
Penetrating a kind of color of light, refraction light has two kinds of colors, along with transparent dielectric slab heap medium sheet quantity
Increase, refraction light also a kind of color, and different, when angle of incidence is not equal to cloth from reflection light color
During this special angle of scholar, reflection light and refraction light have two kinds of colors；2) by changing dieelctric sheet heap medium sheet
Quantity, realize reflecting light with dieelctric sheet heap and become the effect of line polarized light；3) incidence can be observed
When light is with brewster angle incidence, reflection light and refraction light are at an angle of 90；4) can be used for measuring different medium
The refractive index of sheet.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the fixing transparent medium device schematic diagram of the present invention.
Fig. 3 is the semiconductor laser schematic diagram of the present invention.
Fig. 4 is the polarizer constructions schematic diagram of the present invention.
Fig. 5 is the graduated disc position view of the present invention.
Fig. 6 is the turning arm schematic diagram installing semiconductor laser of the present invention.
Fig. 7 is the turning arm schematic diagram installing receiving screen of the present invention.
Fig. 8 is that (left side is reflection light-receiving to the present invention effect simulation figure when non Brewster angle incidence
Screen, the right is refraction light-receiving screen).
Fig. 9 is that the present invention is with effect simulation figure (left side during brewster angle incidence monolithic transparent dieelctric sheet
For reflection light-receiving screen, the right is refraction light-receiving screen).
Figure 10 is that with effect simulation figure during brewster angle incidence transparent dielectric slab heap, (left side is the present invention
Reflection light-receiving screen, the right is refraction light-receiving screen).
Detailed description of the invention
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, this device be a kind of cloth scholar this
Specific rule demonstrator, this device simple operation, simple in construction, effect is obvious.A kind of Double-colour horn wire polarized light
Brewster law demonstrator, it is characterised in that: this Brewster demonstrator comprise base 1, graduated disc 2,
Receiving screen 3, semiconductor laser 4, polaroid 5, transparent dielectric slab heap 6, turning arm 7, adjustment bolt
8, strap 9, ambulatory splint 10, center stand column 11, turning arm positioning pointer 12.
Center stand column 11 is fixed on above square base 1, and graduated disc 2 is fixed in center stand column 11
Side, three turning arms 7 are connected with center stand column 11 by centre bore, one of them turning arm 7 fixing half
Conductor laser 4, polaroid 5 and turning arm positioning pointer 12, two other turning arm 7 fixed reception
Screen 3 and turning arm positioning pointer 12, semiconductor laser 4, polaroid 5, receiving screen 3 and turning arm are fixed
Bit pointer 12 is each attached on the vertical centrage of turning arm 7, and two semiconductor lasers 4 are longitudinally to divide
Cloth, is embedded on turning arm 7 by hole, and the visible ray of different wave length selected by two semiconductor lasers 4
Source, two polaroids 5 are fixed on two bundle semiconductor laser 4 front ends by glue, one of them polarization
Sheet 5 polarization direction is vertical direction, and another polaroid 5 polarization direction is horizontal direction, scale
By bolt, two straps 9 are installed on dish 2, between two straps, place transparent dielectric slab heap 6,
The sheet number of the transparent dielectric slab of composition transparent dielectric slab heap 6 promotes ambulatory splint 10 to enter by adjusting bolt 8
Transparent dielectric slab heap 6 is also fixed by row regulation.
The visible light source of different wave length selected by two semiconductor lasers 4, incides after polaroid 5
The plane of polarization of the line polarized light of transparent dielectric slab heap 6 is respectively parallel to and is perpendicular to the plane of incidence.Transparent medium
The normal direction of sheet heap 6 is along an angle of 90 degrees direction of graduated disc 2, and the light of semiconductor laser 4 is to transparent Jie
Angle of incidence, angle of reflection and the refraction angle of matter sheet heap 6 is indicated on graduated disc 2 by turning arm positioning pointer 12,
And can directly verify that reflecting light when observation meets Brewster's law is perpendicular to reflect light.
Claims (1)
1. a Double-colour horn wire polarized light Brewster law demonstrator, it is characterised in that: this Brewster
Demonstrator comprises base (1), graduated disc (2), receiving screen (3), semiconductor laser (4), partially
Shake sheet (5), transparent dielectric slab heap (6), turning arm (7), adjustment bolt (8), strap (9),
Ambulatory splint (10), center stand column (11), turning arm positioning pointer (12)；Center stand column (11)
Being fixed on square base (1) top, graduated disc (2) is fixed on center stand column (11) top,
Three turning arms (7) are connected with center stand column (11) by centre bore, one of them turning arm (7)
Fixing semiconductor laser (4), polaroid (5) and turning arm positioning pointer (12), two other
Turning arm (7) fixed reception screen (3) and turning arm positioning pointer (12), semiconductor laser respectively
(4), polaroid (5), receiving screen (3) and turning arm positioning pointer (12) are each attached to turning arm
(7), on vertical centrage, two semiconductor lasers (4) are genesis analysis, are fixed on rotation
On arm (7), two semiconductor lasers (4) select the visible light source of different wave length, two polarizations
Sheet (5) is fixed on two bundle semiconductor laser (4) front ends, one of them polaroid (5) by glue
Polarization direction is vertical direction, and another polaroid (5) polarization direction is horizontal direction, scale
By bolt, two straps (9) are installed on dish (2), between two straps, place transparent Jie
Matter sheet heap (6), promotes ambulatory splint (10) to transparent dielectric slab heap (6) by adjusting bolt (8)
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610515181.0A CN105957430A (en) | 2016-07-02 | 2016-07-02 | Bicolor linearly-polarized light Brewster's law demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610515181.0A CN105957430A (en) | 2016-07-02 | 2016-07-02 | Bicolor linearly-polarized light Brewster's law demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105957430A true CN105957430A (en) | 2016-09-21 |
Family
ID=56903252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610515181.0A Pending CN105957430A (en) | 2016-07-02 | 2016-07-02 | Bicolor linearly-polarized light Brewster's law demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105957430A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501279A (en) * | 2016-12-02 | 2017-03-15 | 中国兵器科学研究院宁波分院 | A kind of low sub-surface damage detection method of firmly crisp optical material |
| CN107331264A (en) * | 2017-09-11 | 2017-11-07 | 董逸翔 | Bevel gear reflected refraction is polarized Teaching instrument |
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| US5677805A (en) * | 1995-06-07 | 1997-10-14 | Guzik Technical Enterprises | Apparatus for determining the dynamic position and orientation of a transducing head relative to a storage medium |
| CN1760933A (en) * | 2005-11-01 | 2006-04-19 | 南京大学 | Polarization demo instrument through bicolor laser |
| US20080212096A1 (en) * | 2007-03-01 | 2008-09-04 | Deepak Kumar | Property determination with light impinging at characteristic angle |
| CN201868012U (en) * | 2009-12-22 | 2011-06-15 | 南京工程学院 | Demonstrator for measuring refractive index of solid and Brewster angle |
| CN102680409A (en) * | 2012-05-30 | 2012-09-19 | 中国农业大学 | Device and method for measuring brewster angle |
| CN103632593A (en) * | 2013-12-02 | 2014-03-12 | 南京化工职业技术学院 | Brewster law demonstrating and refractive index measuring instrument |
| CN206097662U (en) * | 2016-07-02 | 2017-04-12 | 北京工业大学 | Double -colored linearly polarized light brewster's law demonstrates appearance |
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2016
- 2016-07-02 CN CN201610515181.0A patent/CN105957430A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5677805A (en) * | 1995-06-07 | 1997-10-14 | Guzik Technical Enterprises | Apparatus for determining the dynamic position and orientation of a transducing head relative to a storage medium |
| CN1760933A (en) * | 2005-11-01 | 2006-04-19 | 南京大学 | Polarization demo instrument through bicolor laser |
| US20080212096A1 (en) * | 2007-03-01 | 2008-09-04 | Deepak Kumar | Property determination with light impinging at characteristic angle |
| CN201868012U (en) * | 2009-12-22 | 2011-06-15 | 南京工程学院 | Demonstrator for measuring refractive index of solid and Brewster angle |
| CN102680409A (en) * | 2012-05-30 | 2012-09-19 | 中国农业大学 | Device and method for measuring brewster angle |
| CN103632593A (en) * | 2013-12-02 | 2014-03-12 | 南京化工职业技术学院 | Brewster law demonstrating and refractive index measuring instrument |
| CN206097662U (en) * | 2016-07-02 | 2017-04-12 | 北京工业大学 | Double -colored linearly polarized light brewster's law demonstrates appearance |
Non-Patent Citations (1)
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| 关小泉: ""应用布儒斯特定律测定玻璃的折射率"", 《大学物理实验》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501279A (en) * | 2016-12-02 | 2017-03-15 | 中国兵器科学研究院宁波分院 | A kind of low sub-surface damage detection method of firmly crisp optical material |
| CN107331264A (en) * | 2017-09-11 | 2017-11-07 | 董逸翔 | Bevel gear reflected refraction is polarized Teaching instrument |
| CN107331264B (en) * | 2017-09-11 | 2022-11-15 | 董逸翔 | Bevel gear reflection and refraction polarization demonstrator |
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Application publication date: 20160921 |
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