CN106023746A - Visual demonstration instrument for Lenz's law - Google Patents
Visual demonstration instrument for Lenz's law Download PDFInfo
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- CN106023746A CN106023746A CN201510662743.XA CN201510662743A CN106023746A CN 106023746 A CN106023746 A CN 106023746A CN 201510662743 A CN201510662743 A CN 201510662743A CN 106023746 A CN106023746 A CN 106023746A
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- visible light
- law
- solenoid
- lenz
- binding post
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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
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
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- General Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
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- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Instructional Devices (AREA)
Abstract
The invention provides a visual demonstration instrument for the Lenz's law, and the instrument comprises a spiral tube, a coil, a visual line, a first binding post, a controller, a second binding post, a sensitive ammeter, and a bar-shaped magnet. The beneficial effects of the invention lie in that a student can directly observe the changes of the size and direction of a current through the visual line when a magnetic pole moves in the spiral tube, so the student can easily understand the experiment phenomenon, can conclude an experiment law and can finally master the Lenz's law; the visual performance and interestingness of an experiment can be improved through employing an LED string to represent the current and the changes of the size and direction of the current; and the learning efficiency of the student can be greatly improved.
Description
[technical field]
The present invention relates to the teaching aid of a kind of demonstrating electromagnetic induction phenomenon, particularly relate to a kind of Lenz's law and visually drill
Show instrument.
[background technology]
In high school physics textbook, the teaching of " electromagnetic induction ", it is emphasis and difficult point, the many experiments in knowledge point
Many.Especially Lenz's law experiment, will pass through four Experimental Researchs, analytic induction, the most finally reach a conclusion.
Owing to, in experimentation, the change student of electric current and the sense of current is invisible be can not touch, and teacher can only be listened to lecture,
Understand with the imagination, it is impossible to forming perceptual knowledge, therefore, knowledge to be digested by student, the most difficult.
[summary of the invention]
It is an object of the invention to solve in high school physics textbook, the teaching of " electromagnetic induction ", knowledge point is many
Experiment is many, the most distracted law experiment, will pass through four Experimental Researchs, analytic induction, the most finally draw
Conclusion, owing to, in experimentation, the change student of electric current and the sense of current is invisible be can not touch, can only listen old
Teacher lectures, and understands with the imagination, it is impossible to forming perceptual knowledge, therefore, knowledge to be digested by student, and ten
The deficiency of point difficulty and a kind of novel Lenz's law visual presentation instrument that provides.
The present invention is achieved through the following technical solutions: a kind of Lenz's law visual presentation instrument, including spiral shell
Spool, coil, visible light, the first binding post, controller, the second binding post, sensitive ammeter, bar shaped
Magnet, described solenoid is outer around coil and visible light, is provided with controller, described helical in described solenoid
Pipe is provided with two the first binding posts, and described sensitive ammeter is provided with two the second binding posts, said two
First binding post is connected with two the second binding posts on described sensitive ammeter by visible light respectively, described
Bar-shaped magnet can be freely into and out in described solenoidal cylinder, described coil two ends and described controller
Connecting, described controller is connected with the first binding post on described solenoid.
Further, described visible light includes electrified wire, running lamp, is provided with energising and leads in described visible light
Line, described visible light is arranged over running lamp, and described controller is by the first binding post on described solenoid
Being connected with the running lamp above described visible light, described coil two ends are with the electrified wire in described visible light even
Connect.
Further, described solenoid shape is cylindrical shape.
When the N pole of bar-shaped magnet and S pole are respectively into and out in solenoidal cylinder, by solenoidal magnetic
When flux changes, the coil on solenoid can produce induction electromotive force and faradic current, faradic current
By the wire on visible light, making the pointer of sensitive ammeter swing, faradic current passes through controller,
Controller sends instruction according to the faradic size and Orientation change received, and makes solenoid outer and helical
The running lamp on visible light on pipe is by different direction flowings, thus analog current, naked eyes just have seen electricity
Stream and size of current, the change in direction, coordinate the pointer observing sensitive ammeter to swing, and student is with regard to energy
Expertly application Ampere's law understands Lenz's law, utilizes Lenz's law and Ampere's law to determine faradism
The change of flow path direction or the motion conditions of magnetic pole.
The beneficial effects of the present invention is: when magnetic pole moves in solenoid bobbin, student passes through visible light, energy
Direct visual perception, to the electric current on coil and the change in size of current direction, is just easier to understand that experiment is existing
As, conclude experiment law, finally grasp Lenz's law, owing to representing that electric current and electric current are big with " running lamp "
Little, the change in direction, then add intuitive and the interest of experiment, can be greatly improved student learning effect
Rate.
[accompanying drawing explanation]
Fig. 1 is Lenz's law visual presentation instrument structural representation of the present invention；
Reference: 1, solenoid；2, coil；3, visible light；31, electrified wire；32, flowing water
Lamp；4, the first binding post；5, controller；6, the second binding post；7, sensitive ammeter；8, bar shaped magnetic
Body.
[detailed description of the invention]
Below in conjunction with the accompanying drawings and the present invention is described further by detailed description of the invention:
Embodiment 1
As it is shown in figure 1, a kind of Lenz's law visual presentation instrument, including solenoid 1, coil 2, visible light 3,
First binding post 4, controller the 5, second binding post 6, sensitive ammeter 7, bar-shaped magnet 8, described helical
Pipe 1 is outer around coil 2 and visible light 3, is provided with controller 5, on described solenoid 1 in described solenoid 1
Being provided with two the first binding posts 4, described sensitive ammeter 7 is provided with two the second binding posts 6, said two
First binding post 4 is respectively by visible light 3 with two the second binding posts 6 on described sensitive ammeter 7 even
Connect, described bar-shaped magnet 8 can freely into and out in described solenoid 1, described coil 2 two ends with
Described controller 5 connects, and described controller 5 is connected with the first binding post on described solenoid 1.
Preferably, described visible light 3 includes electrified wire 31, running lamp 32, is provided with in described visible light 3
Electrified wire 31, described visible light 3 is arranged over running lamp 32, and described controller 5 is by described solenoid
The first binding post 4 on 1 is connected with the running lamp 32 above described visible light 3, described coil 2 two ends with
Electrified wire 31 in described visible light 3 connects.
Preferably, described solenoid 1 is shaped as cylindrical shape.
When the N pole of bar-shaped magnet and S pole respectively in cylinder into and out solenoid 1, by solenoid 1
Magnetic flux when changing, the coil 2 on solenoid 1 can produce induction electromotive force and faradic current,
Faradic current, by the wire 31 on visible light 3, makes the pointer of sensitive ammeter 7 swing, faradism
Flowing by controller 5, controller 5 sends instruction according to the faradic size and Orientation change received,
The running lamp 32 on the visible light 3 outside solenoid 1 and on solenoid 1 is made to flow by different directions, thus
Analog current, naked eyes just have seen electric current and size of current, the change in direction, coordinates and observes sensitive ammeter 7
Pointer swing, student just can expertly apply Ampere's law to understand Lenz's law, utilizes Lenz fixed
Rule and Ampere's law determine the change of inductive current direction or the motion conditions of magnetic pole.
The announcement of book and teaching according to the above description, those skilled in the art in the invention can also be to above-mentioned
Embodiment carries out suitable change and amendment.Therefore, the invention is not limited in disclosed and described above
Some modifications and changes of the present invention be should also be as falling into the guarantor of the claim of the present invention by detailed description of the invention
In the range of protecting.Although additionally, employ some specific terms in this specification, but these terms are simply
Facilitate explanation, the present invention is not constituted any restriction.
Claims (3)
1. a Lenz's law visual presentation instrument, it is characterised in that: include solenoid, coil, visible light,
First binding post, controller, the second binding post, sensitive ammeter, bar-shaped magnet, described solenoid outer around
Coil and visible light, be provided with controller in described solenoid, described solenoid is provided with two the first wiring
Post, described sensitive ammeter is provided with two the second binding posts, and said two the first binding post passes through respectively can
Sight line is connected with two the second binding posts on described sensitive ammeter, and described bar-shaped magnet can insert freely
With extract in described solenoid, described coil two ends are connected with described controller, described controller and described spiral shell
The first binding post on spool connects.
Lenz's law visual presentation instrument the most according to claim 1, it is characterised in that: described visible light
Including electrified wire, running lamp, being provided with electrified wire in described visible light, described visible light is arranged over stream
Water lamp, described controller is by the first binding post on described solenoid and the running lamp above described visible light
Connecting, described coil two ends are connected with the electrified wire in described visible light.
Lenz's law visual presentation instrument the most according to claim 1, it is characterised in that: described solenoid
It is shaped as cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510662743.XA CN106023746A (en) | 2015-10-02 | 2015-10-02 | Visual demonstration instrument for Lenz's law |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510662743.XA CN106023746A (en) | 2015-10-02 | 2015-10-02 | Visual demonstration instrument for Lenz's law |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106023746A true CN106023746A (en) | 2016-10-12 |
Family
ID=57082382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510662743.XA Pending CN106023746A (en) | 2015-10-02 | 2015-10-02 | Visual demonstration instrument for Lenz's law |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106023746A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448379A (en) * | 2016-10-19 | 2017-02-22 | 济南大学 | AC generator principle demonstration instrument |
| CN107248358A (en) * | 2016-10-16 | 2017-10-13 | 刘绍家 | One kind visualization circuit arrangement |
| CN107742457A (en) * | 2017-11-30 | 2018-02-27 | 合肥探奥教育科技有限公司 | A kind of simple teaching aid for demonstrating magnetic life electrical phenomena |
| CN108417128A (en) * | 2018-01-23 | 2018-08-17 | 天津大学 | Demonstrator for Lenz law with superconductor |
| CN112185220A (en) * | 2019-07-02 | 2021-01-05 | 王燕红 | Electromagnetic experimental device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201477771U (en) * | 2009-08-09 | 2010-05-19 | 多斯江·佳尔木哈买提 | Experimental apparatus for verifying Lenz's law |
| KR20120108874A (en) * | 2011-03-26 | 2012-10-05 | 안선후 | Studying device by the electromagnetic induction theory |
| CN203825909U (en) * | 2014-02-21 | 2014-09-10 | 中国人民解放军空军勤务学院 | Novel Lenz's law demonstration instrument |
| CN203910128U (en) * | 2014-06-20 | 2014-10-29 | 柳玉洪 | Lenz's law demonstrator |
| CN205003936U (en) * | 2015-10-02 | 2016-01-27 | 刘绍家 | Visual demonstration appearance of lenz law |
-
2015
- 2015-10-02 CN CN201510662743.XA patent/CN106023746A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201477771U (en) * | 2009-08-09 | 2010-05-19 | 多斯江·佳尔木哈买提 | Experimental apparatus for verifying Lenz's law |
| KR20120108874A (en) * | 2011-03-26 | 2012-10-05 | 안선후 | Studying device by the electromagnetic induction theory |
| CN203825909U (en) * | 2014-02-21 | 2014-09-10 | 中国人民解放军空军勤务学院 | Novel Lenz's law demonstration instrument |
| CN203910128U (en) * | 2014-06-20 | 2014-10-29 | 柳玉洪 | Lenz's law demonstrator |
| CN205003936U (en) * | 2015-10-02 | 2016-01-27 | 刘绍家 | Visual demonstration appearance of lenz law |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248358A (en) * | 2016-10-16 | 2017-10-13 | 刘绍家 | One kind visualization circuit arrangement |
| CN106448379A (en) * | 2016-10-19 | 2017-02-22 | 济南大学 | AC generator principle demonstration instrument |
| CN107742457A (en) * | 2017-11-30 | 2018-02-27 | 合肥探奥教育科技有限公司 | A kind of simple teaching aid for demonstrating magnetic life electrical phenomena |
| CN108417128A (en) * | 2018-01-23 | 2018-08-17 | 天津大学 | Demonstrator for Lenz law with superconductor |
| CN112185220A (en) * | 2019-07-02 | 2021-01-05 | 王燕红 | Electromagnetic experimental device |
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Application publication date: 20161012 |