CN109509390A - A kind of Foucault pendulum apparatus for demonstrating - Google Patents
A kind of Foucault pendulum apparatus for demonstrating Download PDFInfo
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- CN109509390A CN109509390A CN201811442409.3A CN201811442409A CN109509390A CN 109509390 A CN109509390 A CN 109509390A CN 201811442409 A CN201811442409 A CN 201811442409A CN 109509390 A CN109509390 A CN 109509390A
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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
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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Abstract
The present invention relates to a kind of Foucault pendulum apparatus for demonstrating, including truss, swing rope, the swing ball for being installed in swing rope lower end, it is provided with show stand below swing ball, universal joint is installed between the upper end of swing rope and the middle part of truss, light accessory exhibition system is provided in the middle part of show stand.The circular light area that light accessory exhibition system includes circular induction zone, is arranged in outside induction zone, the swinging track region of swing ball is projected as projected area in the table top of show stand, induction zone is located at the middle section of projected area, and the outside of projected area is arranged in light area；Induction zone includes the diffusing reflection sensor of multiple circular array distributions, and light area includes multiple light bar by the control light on and off of diffusing reflection sensor.The Foucault pendulum apparatus for demonstrating has easy to operate, good demonstration effect, shows that principle is abundant, is convenient for spectators' intuitivism apprehension.
Description
Technical field
The present invention relates to a kind of Foucault pendulum apparatus for demonstrating, belong to scientific phenomena apparatus for demonstrating.
Background technique
In order to prove the earth in rotation, French physician Foucault (1819-1868) did primary successful in 1851
Experiment is swung, Foucault pendulum is gained the name therefrom.Experiment carries out below the highest dome of Paris, FRA sage of the past's ancestral temple, and 67 meters of pendulum length, pendulum
Hammer weighs 28 kilograms, and hitch point minimizes friction by special designing.This pendulum inertia and momentum are big, thus basic
It is not influenced by earth rotation and is voluntarily swung, and duration of oscillation is very long.In Foucault pendulum test, it is seen that, swing process
Middle swinging plane slowly rotates along clockwise direction, and swaying direction constantly changes.This phenomenon is analyzed, is put in swinging plane direction
Above there is no by external force, according to the law of inertia, the direction in space of swing will not change, therefore, it can be seen that this swing side
To variation, be the earth as where observer rotate counterclockwise as a result, tellurian observer sees phase
To motion artifacts, so that having convincingly demonstrated the earth is in rotation.
Current Foucault pendulum generallys use husky picture formula either to leave swinging track in display platform thus to analyze, demonstrate,prove
The bright earth is in rotation.This kind of demonstration mode will usually consume a large amount of fine sand, cumbersome, and demonstration result is single, be unfavorable for Fu
Teaching, the science popularization of section's pendulum.
Summary of the invention
The present invention is in view of the deficienciess of the prior art, provide a kind of Foucault pendulum apparatus for demonstrating, specific technical solution is such as
Under:
A kind of Foucault pendulum apparatus for demonstrating, including truss, swing rope, the swing ball for being installed in swing rope lower end, the lower section of the swing ball is arranged
There is show stand, universal joint is installed between the upper end of the swing rope and the middle part of truss, is provided with lamp in the middle part of the show stand
Light accessory exhibition system.
As an improvement of the above technical solution, the swing ball includes metal spherical shell and the lead that is arranged in inside metal spherical shell
The lower end of ball, the swing rope is fixedly connected with the upper end of metal spherical shell, and the lower end of the metal spherical shell is installed with pointer, the finger
Needle includes cylindrical connecting portion and rounding mesa-shaped needle body, the small end of the needle body downward, the big end of the needle body and interconnecting piece
One end is connected as one, and the other end of the interconnecting piece is fixedly connected with the lower end of metal spherical shell；Light accessory exhibition system
System includes circular induction zone, the circular light area being arranged in outside induction zone, the swinging track region of the swing ball
Projected area is projected as in the table top of show stand, and the induction zone is located at the middle section of projected area, the light area setting exists
The outside of projected area；The induction zone includes the diffusing reflection sensor of multiple circular array distributions, and the light area includes more
A light bar by the control light on and off of diffusing reflection sensor.
As an improvement of the above technical solution, the diffusing reflection sensor is provided with 72, and the light bar is provided with 360
Item.
As an improvement of the above technical solution, transparent prevention plate is provided with right above the light area.
As an improvement of the above technical solution, the transparent prevention plate is made of tempered glass.
As an improvement of the above technical solution, the swing rope is made of anti-rotational wirerope.
As an improvement of the above technical solution, the edge of the show stand is installed with fence, and the fence is arranged in light
The outside of accessory exhibition system.
Beneficial effects of the present invention:
When watching Foucault pendulum apparatus for demonstrating progress Foucault pendulum demonstrator of the present invention, spectators more intuitive can experience spectators
To the rotation of the earth, the rotation of foucault pendulum experiment and the earth is verified, judges and verify us to be in the Northern Hemisphere or the Southern Hemisphere,
The general geographic latitude of present position can be extrapolated simultaneously, and demonstrating effect is prominent, shows that principle is abundant.The Foucault pendulum is drilled
Showing device has easy to operate, good demonstration effect, is convenient for spectators' intuitivism apprehension.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Foucault pendulum apparatus for demonstrating of the present invention；
Fig. 2 is swing rope of the present invention, the connection schematic diagram of universal joint and truss；
Fig. 3 is the connection schematic diagram of swing rope of the present invention and swing ball；
Fig. 4 is the schematic diagram of internal structure of light accessory exhibition system of the present invention；
Fig. 5 is partial enlarged view at A in Fig. 4.
Fig. 6 is the structural schematic diagram (overlooking state) of light accessory exhibition system of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Fig. 1 ~ 6, the Foucault pendulum apparatus for demonstrating, including truss 10, swing rope 20, the pendulum for being installed in 20 lower end of swing rope
Ball 30, the lower section of the swing ball 30 are provided with show stand, are equipped with ten thousand between the upper end of the swing rope 20 and the middle part of truss 10
To section 40, light accessory exhibition system 50 is provided in the middle part of the show stand.The swing ball 30 includes metal spherical shell 32 and sets
The shot 31 inside metal spherical shell 32 is set, the lower end of the swing rope 20 is fixedly connected with the upper end of metal spherical shell 32, the gold
The lower end for belonging to spherical shell 32 is installed with pointer, and the pointer includes cylindrical connecting portion 331 and rounding mesa-shaped needle body 332, the needle
Downward, the big end of the needle body 332 and one end of interconnecting piece 331 are connected as one the small end of body 332, the interconnecting piece 331
The other end is fixedly connected with the lower end of metal spherical shell 32；The light accessory exhibition system 50 includes circular induction zone 51, sets
Set the circular light area 52 outside induction zone 51, the table top of the swinging track region of the swing ball 30 in show stand
It is projected as projected area 55, the induction zone 51 is located at the middle section of projected area 55, and the light area 52 is arranged in projected area 55
Outside；The induction zone 51 includes the diffusing reflection sensor 511 of multiple circular arrays distribution, and the light area 52 includes more
A light bar 521 that light on and off are controlled by diffusing reflection sensor 511.
In demonstration, swing ball 30 is promoted to corresponding position and discharged the Foucault pendulum apparatus for demonstrating by staff, described
Swing ball 30 carries out foucault pendulum experiment.The diffusing reflection sensor 511 is provided with 72, and the diffusing reflection sensor 511 can be selected
Omron E3F-DS30C4 sensor.The light bar 521 is provided with 360.The diffusing reflection sensor 511 and light bar 521 are equal
It is mounted on show stand, the induction zone 51 and light area 52 are arranged concentrically；Every 5 degree of installations, 1 diffusing reflection sensor 511, overflow
Reflective sensor 511 is able to detect that needle body 332, and diffusing reflection sensor 511, which is provided with 72, can also make adjacent two
It will not be interfered with each other between a diffusing reflection sensor 511.
When top of the swing ball 30 by one of diffusing reflection sensor 511, the lower surface of needle body 332 is by the diffusing reflection
Sensor 511 is sensed, that is, lid diffusing reflection sensor 511 detects object signal, can be by being transferred to monolithic
Machine, single-chip microcontroller light corresponding light bar 521 further according to signal location.
Present invention discovery when areas of Shenyang carries out field measurement: the swing angle of swing ball 30 is 10 degree per hour；Due to
Much smaller number of the quantity of diffusing reflection sensor 511 than light bar 521, corresponding 5 light bar 521 of each diffusing reflection sensor 511,
So subsequent 4 light bar 521 are to increase by one every 6 minutes；Diffusing reflection sensor 511 is constantly acquired in the process
Data simultaneously record the time, once detect next diffusing reflection sensor 511, then using new interval time divided by 5 as next
The time interval that wheel light bar 521 is lighted automatically；If detecting, the signal of diffusing reflection sensor 511 is not adjacent, then it is assumed that is
Interference signal；Adjacent next diffusing reflection sensor 511 is not detected again or after 30 minutes, light bar 521 is no longer down
It lights, this illustrates that current swing ball 30 is likely to be and stops swinging or swing ball 30 is also less than and swings to corresponding diffusing reflection sensor 511
Position, play automatic correcting action.
It is to more segment the rotation angle of the earth and spectators more intuitive can experience that 360 light bar 521, which are arranged,
To the rotation of the earth.Can be verified by the variation of the color of observation lamp band 521 and quantity foucault pendulum experiment and the earth from
Turn, and according to the deflection counterclockwise of light bar 521, we are in the Northern Hemisphere, while can also be calculated according to calculation formula
The general geographic latitude of present position out.Foucault pendulum swinging plane deflection angle can with θ °=15 ° tsin φ of formula come
It asks, unit degree of being.φ represents local geographic latitude in formula, and t be the deflection time used, with hour office because the earth oneself
It is equal to 15 ° within tarnsition velocity 1 hour, so, in order to convert, multiplied by 15 ° in formula.For example, the Foucault pendulum spectators in Shenyang see 1
Hour has deflected 10 degree, is equivalent to 10 °=15 ° × 1 × sin φ.φ=41.8 °, therefore the latitude of Shenyang locality can be calculated
Degree is 41.8 degree of north latitude.
That is, 72 diffusing reflection sensors 511 of setting are the angles put for detecting swing ball 30.Setting 360
Light bar 521, due to the effect of induction zone 51,72 diffusing reflection sensors 511 in induction zone 51 can be controlled in light area 52
360 light bar 521 carry out regular light on and off according to the sequence that swing ball 30 is swung, that is to say, that the angle phase that swing ball 30 was put
The light bar 521 answered can change colour.Therefore, spectators can be watched and be judged the swing side of Foucault pendulum by the light on and off effect of light bar 521
To be verified with corresponding scientific knowledge；Spectators more intuitive can experience the rotation of the earth, and can pass through
The color of observation lamp band 521 and changing to verify the rotation of foucault pendulum experiment and the earth for quantity, counterclockwise according to light bar 521
We are in the Northern Hemisphere known to deflection, while the general geographical latitude of present position can also be extrapolated according to calculation formula
Degree.
The effect that universal joint 40 is arranged is to reduce frictional resistance, and universal joint 40 allows the upper end of swing rope 20 in office
Where to freely swinging.The swing rope 20 is made of anti-rotational wirerope, can reduce interference.Stainless steel can be used in metal spherical shell 32
It is made, the shot 31 may be designed as 100Kg, and shot 31 can be improved the self weight of swing ball 30, to increase duration of oscillation.Pointer
Not only facilitate and carries out carrying out school zero to swing ball 30.For bulky swing ball 30, setting pointer can be more accurate
It is diffusely reflected sensor 511 to sense, error is effectively reduced.
Further, to protect light area 52；The surface in the light area 52 is provided with transparent prevention plate 53.
The transparent prevention plate 53 is made of tempered glass.
Further, to guarantee safety, while show stand is protected, the edge of the show stand is installed with fence
60, the outside of light accessory exhibition system 50 is arranged in the fence 60.
In the above-described embodiments, in demonstration, swing ball 30 is promoted to accordingly the Foucault pendulum apparatus for demonstrating by staff
Position simultaneously discharges, and spectators stand outside fence 60, watches the motion profile of Foucault pendulum, spectators can be appreciated that earth rotation relevant knowledge.
For spectators when watching Foucault pendulum apparatus for demonstrating progress Foucault pendulum demonstrator of the present invention, spectators more intuitive can experience ground
The rotation of ball verifies the rotation of foucault pendulum experiment and the earth, judges and verify us to be in the Northern Hemisphere or the Southern Hemisphere, simultaneously
The general geographic latitude of present position can be extrapolated, demonstrating effect is prominent, shows that principle is abundant.The Foucault pendulum demonstrator dress
It sets with easy to operate, good demonstration effect, convenient for spectators' intuitivism apprehension.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of Foucault pendulum apparatus for demonstrating, including truss (10), swing rope (20), the swing ball (30) for being installed in swing rope (20) lower end,
Show stand is provided with below the swing ball (30), it is characterised in that: the upper end of the swing rope (20) and the middle part of truss (10)
Between be equipped with universal joint (40), light accessory exhibition system (50) is provided in the middle part of the show stand.
2. a kind of Foucault pendulum apparatus for demonstrating according to claim 1, it is characterised in that: the swing ball (30) includes metal ball
Shell (32) and the setting shot (31) internal in metal spherical shell (32), the lower end of the swing rope (20) are upper with metal spherical shell (32)
End is fixedly connected, and the lower end of the metal spherical shell (32) is installed with pointer, and the pointer includes cylindrical connecting portion (331) and falls
Round table-like needle body (332), the small end of the needle body (332) downward, the one of the big end of the needle body (332) and interconnecting piece (331)
End is connected as one, and the other end of the interconnecting piece (331) is fixedly connected with the lower end of metal spherical shell (32)；The light auxiliary
Display systems (50) include circular induction zone (51), the circular light area (52) external in induction zone (51) are arranged, described
The swinging track region of swing ball (30) is projected as projected area (55) in the table top of show stand, and the induction zone (51) is located at
The middle section of projected area (55), outside of light area (52) setting in projected area (55)；The induction zone (51) includes
The diffusing reflection sensor (511) of multiple circular array distributions, the light area (52) includes multiple by diffusing reflection sensor
(511) light bar (521) of light on and off is controlled.
3. a kind of Foucault pendulum apparatus for demonstrating according to claim 2, it is characterised in that: the diffusing reflection sensor (511)
72 are provided with, the light bar (521) is provided with 360.
4. a kind of Foucault pendulum apparatus for demonstrating according to claim 2, it is characterised in that: the surface of the light area (52)
It is provided with transparent prevention plate (53).
5. a kind of Foucault pendulum apparatus for demonstrating according to claim 4, it is characterised in that: the transparent prevention plate (53) is by steel
Change glass to be made.
6. a kind of Foucault pendulum apparatus for demonstrating according to claim 1, it is characterised in that: the swing rope (20) is by anti-rotational steel
Cord is made.
7. a kind of Foucault pendulum apparatus for demonstrating according to claim 1, it is characterised in that: the edge of the show stand is installed with
Fence (60), the fence (60) are arranged in the outside of light accessory exhibition system (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811442409.3A CN109509390B (en) | 2018-11-29 | 2018-11-29 | Foucault pendulum demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811442409.3A CN109509390B (en) | 2018-11-29 | 2018-11-29 | Foucault pendulum demonstration device |
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| Publication Number | Publication Date |
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| CN109509390A true CN109509390A (en) | 2019-03-22 |
| CN109509390B CN109509390B (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811442409.3A Active CN109509390B (en) | 2018-11-29 | 2018-11-29 | Foucault pendulum demonstration device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56114743A (en) * | 1980-02-14 | 1981-09-09 | Keiji Nakayama | Accelerating device for pendulum |
| CN2232609Y (en) * | 1994-09-21 | 1996-08-07 | 泰安师范专科学校 | Foucault pendulum demonstrating instrument |
| CN2598067Y (en) * | 2002-04-04 | 2004-01-07 | 绍兴市第一中学 | Micro Foucault pendulum |
| CN101038706A (en) * | 2007-04-09 | 2007-09-19 | 哈尔滨工业大学 | Drive apparatus for pendulum |
| CN201681516U (en) * | 2010-05-06 | 2010-12-22 | 上海科技馆 | Single-pendulum track record display system |
| CN206097615U (en) * | 2016-04-05 | 2017-04-12 | 段沐辰 | Foucault pendulum demonstration appearance |
| CN106652679A (en) * | 2017-03-03 | 2017-05-10 | 江苏科学梦创展科技有限公司 | Foucault pendulum demonstration device |
| CN107424486A (en) * | 2017-08-27 | 2017-12-01 | 郭金虎 | Multi-functional foucault pendulum experiment apparatus for demonstrating |
-
2018
- 2018-11-29 CN CN201811442409.3A patent/CN109509390B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56114743A (en) * | 1980-02-14 | 1981-09-09 | Keiji Nakayama | Accelerating device for pendulum |
| CN2232609Y (en) * | 1994-09-21 | 1996-08-07 | 泰安师范专科学校 | Foucault pendulum demonstrating instrument |
| CN2598067Y (en) * | 2002-04-04 | 2004-01-07 | 绍兴市第一中学 | Micro Foucault pendulum |
| CN101038706A (en) * | 2007-04-09 | 2007-09-19 | 哈尔滨工业大学 | Drive apparatus for pendulum |
| CN201681516U (en) * | 2010-05-06 | 2010-12-22 | 上海科技馆 | Single-pendulum track record display system |
| CN206097615U (en) * | 2016-04-05 | 2017-04-12 | 段沐辰 | Foucault pendulum demonstration appearance |
| CN106652679A (en) * | 2017-03-03 | 2017-05-10 | 江苏科学梦创展科技有限公司 | Foucault pendulum demonstration device |
| CN107424486A (en) * | 2017-08-27 | 2017-12-01 | 郭金虎 | Multi-functional foucault pendulum experiment apparatus for demonstrating |
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| Publication number | Publication date |
|---|---|
| CN109509390B (en) | 2020-08-28 |
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Address after: 230088 southwest of the intersection of Yunhu road and Jixian Road, Feixi Economic Development Zone, Hefei City, Anhui Province Patentee after: HEFEI PANSHI AUTOMATION TECHNOLOGY Co.,Ltd. Address before: 230088 Peach Blossom Industrial Park Development Zone, Jingkai District, Hefei City, Anhui Province Patentee before: HEFEI PANSHI AUTOMATION TECHNOLOGY Co.,Ltd. |
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Address after: 230088 southwest of the intersection of Yunhu road and Jixian Road, Feixi Economic Development Zone, Hefei City, Anhui Province Patentee after: Hefei Panshi Intelligent Technology Co.,Ltd. Address before: 230088 southwest of the intersection of Yunhu road and Jixian Road, Feixi Economic Development Zone, Hefei City, Anhui Province Patentee before: HEFEI PANSHI AUTOMATION TECHNOLOGY Co.,Ltd. |