CN109949673A - A kind of teaching equipment for verifying Lenz's law - Google Patents
A kind of teaching equipment for verifying Lenz's law Download PDFInfo
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- CN109949673A CN109949673A CN201910394180.9A CN201910394180A CN109949673A CN 109949673 A CN109949673 A CN 109949673A CN 201910394180 A CN201910394180 A CN 201910394180A CN 109949673 A CN109949673 A CN 109949673A
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Abstract
The present invention relates to a kind of teaching equipments for verifying Lenz's law.The teaching equipment of the verifying Lenz's law includes pedestal, first insulation tube and several verifying coils, several light-emitting components and magnetic part, first insulation tube is set on the pedestal, several verifying coils are wound on first insulation tube, several verifying coils are spaced apart from each other setting, several light-emitting components are connected on several verifying coils, each light-emitting component forms closed circuit with corresponding verifying coil, the magnetic part is for being placed in first insulation tube, and decline under the effect of gravity, so that several verifying coils generate induced current successively to drive several light-emitting components successively to shine.The teaching equipment of the verifying Lenz's law is intuitive and convenient for teaching.
Description
Technical field
The present invention relates to a kind of teaching equipments for verifying Lenz's law.
Background technique
Lenz's law (Lenz's law) is the law of an electromagnetism, can be used to judge to be generated by electromagnetic induction
The direction of electromotive force.In Lenz's law, induced current has such direction, i.e., faradic magnetic field always hinders to cause to feel
Answer the variation of the magnetic flux of electric current.Lenz's law can also state are as follows: faradic effect always revolt cause it is faradic
Reason.In electron and electrician teaching, it is often necessary to lecture Lenz's law to student, however not there is intuitive material object to test at present
Card is to assist student to understand, so that teaching is less intuitive.
Summary of the invention
Based on this, it is necessary to provide a kind of teaching equipment of more intuitive verifying Lenz's law.
A kind of teaching equipment for verifying Lenz's law, including it is pedestal, the first insulation tube and several verifying coils, several luminous
Element and magnetic part, first insulation tube are set on the pedestal, and several verifying coils are wound in described first
On insulation tube, several verifying coils are spaced apart from each other setting, and several light-emitting components are connected to several verifyings
On coil, each light-emitting component and corresponding verifying coil form closed circuit, and the magnetic part is for being placed in described the
In one insulation tube, and decline under the effect of gravity, so that successively to generate induced current described to drive for several verifying coils
Several light-emitting components successively shine.
In a wherein embodiment, first insulation tube is transparent pipe, and the light-emitting component is diode, described
First insulation tube extends along the vertical direction, and several verifying coils are wound on the outer peripheral surface of first insulation tube.
In a wherein embodiment, the inside of first insulation tube is formed with verifying channel, the verifying channel
Cross section be circle, the magnetic part be cylinder, it is described verifying channel diameter be the magnetic part diameter 1-1.3
Times.
In a wherein embodiment, several verifying coil mutually insulateds, each adjacent two is verified between coil
It is formed with isolation spacing, each verifying coil is less than or equal to the isolation in the standoff height on first insulation tube
The height of spacing.
In a wherein embodiment, horizontal-extending taking-up slot, the taking-up slot and institute are provided on the pedestal
It states verifying channel vertically to communicate, the cross section for taking out slot is rectangle.
It further include taking out bar in a wherein embodiment, the taking-up bar activity is inserted in the taking-up slot, is used
The magnetic part is pushed against out the pedestal, buffer area, the buffer area are formed in the middle part of the bottom surface for taking out slot
It is directed at the verifying channel of first insulation tube.
It further include the second insulation tube being set on the pedestal in a wherein embodiment, second insulation
It is formed with verifying channel in pipe, is wound with induction coil on the circumferential surface of second insulation tube, the induction coil is from described the
The top of two insulation tubes extends to the bottom end of second insulation tube, is provided with light emitting diode on the induction coil.
It further include the transparent pipe being set on the pedestal in a wherein embodiment, the transparent pipe is transparent
Glass tube or lucite pipe are formed in the transparent pipe and fall channel, for passing through for the magnetic part.
It further include the first metal tube being set on the pedestal, first metal in a wherein embodiment
Induction channels are formed in pipe, for passing through for the magnetic part, the bottom end of first metal tube is formed with observation notch.
It further include the second metal tube being set on the pedestal, second metal in a wherein embodiment
Channel of inducting is formed in pipe, for passing through for the magnetic part, be also provided on the side wall of second metal tube with it is described
Induct channel connection observation slit, it is described observation slit along second metal tube short transverse extend, and penetrate through described in
The top and bottom end of second metal tube.
When in use, the magnetic part is placed in first insulation tube for the teaching equipment of the verifying Lenz's law,
The magnetic part declines under the effect of gravity, so that the verifying coil cuts the magnetic induction line of the magnetic part, and then incudes and produces
Raw electric current is so that light-emitting component thereon shines, while the magnetic part is slowed down it and fall by the resistance for verifying coil
Terminal-velocity degree.After the magnetic part crosses a verifying coil, the magnetic part is no longer influenced by resistance, according to acceleration of gravity
It falls, until fall speed when the magnetic part is by another verifying coil and slow down again, shining on the verifying coil
Element shines.So continue, the magnetic part is intermittently fallen, and the light-emitting component on several verifying coils is then successive
It shines in turn, so that the teaching equipment of the verifying Lenz's law is more intuitive, facilitates teaching.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the teaching equipment of the verifying Lenz's law of an embodiment.
Fig. 2 is the stereoscopic schematic diagram at another visual angle of the teaching equipment of verifying Lenz's law shown in Fig. 1.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term used herein is intended merely to the mesh of description specific embodiment
, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more relevant listed items
Any and all combinations.
The present invention relates to a kind of teaching equipments for verifying Lenz's law.For example, the teaching equipment of the verifying Lenz's law
Including pedestal, the first insulation tube and several verifying coils, several light-emitting components and magnetic part.For example, first insulation tube is set
It is placed on the pedestal, several verifying coils are wound on first insulation tube, and several verifying coils are mutual
Interval setting.For example, several light-emitting components are connected on several verifying coils, each light-emitting component with
Corresponding verifying coil forms closed circuit.For example, the magnetic part is made for being placed in first insulation tube, and in gravity
With decline, so that several verifying coils generate induced current successively to drive several light-emitting components successively to shine.
Please refer to Fig. 1 and Fig. 2, a kind of teaching equipment for verifying Lenz's law, if including pedestal 10, the first insulation tube 20 with
Dry verifying coil 30, several light-emitting components 31 and magnetic part 40, first insulation tube 20 is set on the pedestal 10, described
Several verifying coils 30 are wound on first insulation tube 20, and several verifying coils 30 are spaced apart from each other setting, described
Several light-emitting components 31 are connected on several verifying coils 30, each light-emitting component 31 and corresponding verifying line
Circle 30 forms closed circuit, and the magnetic part 40 declines under the effect of gravity for being placed in first insulation tube 20, makes
It obtains several verifying coils 30 and generates induced current successively to drive several light-emitting components 31 successively to shine.
The magnetic part 40 when in use, is placed in first insulation tube 20 by the teaching equipment of the verifying Lenz's law
In, the magnetic part 40 declines under the effect of gravity, so that the verifying coil 30 cuts the magnetic induction line of the magnetic part 40, into
And incudes and generate electric current so that light-emitting component 31 thereon shines, while the magnetic part 40 is by the verifying coil 30
Resistance and slow down it and fall speed.After the magnetic part 40 crosses verifying coil 30, the magnetic part 40 is no longer influenced by
Resistance is fallen according to acceleration of gravity, until falling speed again when the magnetic part 40 is by another verifying coil 30
Secondary to slow down, the light-emitting component 31 on the verifying coil 30 shines.So continue, the magnetic part 40 is intermittently fallen, and institute
The light-emitting component 31 stated on several verifying coils 30 then successively shines in turn, so that the teaching of the verifying Lenz's law is set
It is standby more intuitive, facilitate teaching.
For example, the magnetic part 40 inverts in order to prevent, using effect is influenced, first insulation tube 20 is transparent
Pipe, the light-emitting component 31 are diode, and first insulation tube 20 extends along the vertical direction, and several verifying coils 30 are
It is wound on the outer peripheral surface of first insulation tube 20.The inside of first insulation tube 20 is formed with verifying channel 21, described
The cross section for verifying channel 21 is circle, and the magnetic part 40 is cylinder, and the diameter in the verifying channel 21 is the magnetism
1-1.3 times of the diameter of part 40.By the setting of the diameter of diameter and the magnetic part 40 to the verifying channel 21, so that
The magnetic part 40, which enters in the verifying channel 21, cannot generate overturning, and then improve using effect.
For example, for the ease of making several light-emitting components 31 in generation interval, several verifyings on fluorescent lifetime
30 mutually insulated of coil, each adjacent two verifying coil 30 between be formed with isolation spacing 33, each verifying coil 30 in
Standoff height on first insulation tube 20 is less than or equal to the height of the isolation spacing 33.It is provided on the pedestal 10
Horizontal-extending taking-up slot 15, the taking-up slot 15 is vertical with the verifying channel 21 to be communicated, the cross section for taking out slot 15
For rectangle.By being arranged the standoff height of the verifying coil 30 to be less than or equal to the isolation spacing 33, so that
Two neighboring verifying coil 30 is every obtaining farther out, so that next light-emitting component 31 is just after a upper light-emitting component 31 extinguishes
Start to shine, improves its visual effect.
For example, being taken out for the ease of will fall off in the magnetic part 40 on the pedestal 10, the verifying Lenz's law
Teaching equipment further include taking out bar 45,45 activity of taking-up bar is inserted in the taking-up slot 15, to by the magnetism
Part 40 pushes against out the pedestal 10, and buffer area is formed in the middle part of the bottom surface for taking out slot 15, and the buffer area is directed at institute
State the verifying channel 21 of the first insulation tube 20.It can be from the pedestal by releasing the magnetic part 40 using the taking-up bar 45
The magnetic part 40 is taken out on 10.And the buffer area then advantageously reduces between the magnetic part 40 and the pedestal 10
Collision.
For example, compare effect for the ease of improving, the teaching equipment of the verifying Lenz's law further include be set to it is described
The second insulation tube 50 on pedestal 10 is formed with verifying channel 21 in second insulation tube 50, second insulation tube 50
Induction coil 51 is wound on circumferential surface, the top of the induction coil 51 from second insulation tube 50 extends to described second absolutely
The bottom end of edge pipe 50 is provided with light emitting diode 52 on the induction coil 51.The teaching equipment of the verifying Lenz's law is also
Including the transparent pipe 60 being set on the pedestal 10, the transparent pipe 60 be transparent glass tube or lucite pipe, it is described
It is formed in transparent pipe 60 and falls channel 61, for passing through for the magnetic part 40.The teaching equipment of the verifying Lenz's law
Further include the first metal tube 70 being set on the pedestal 10, be formed with induction channels 75 in first metal tube 70, uses
Pass through in for the magnetic part 40, the bottom end of first metal tube 70 is formed with observation notch.The verifying Lenz's law
Teaching equipment further includes the second metal tube 80 being set on the pedestal 10, be formed in second metal tube 80 induct it is logical
Road 85 is also provided with and the channel 85 of inducting for passing through for the magnetic part 40 on the side wall of second metal tube 80
The observation slit 88 of connection, the observation slit 88 extends along the short transverse of second metal tube 80, and penetrates through described the
The top and bottom end of two metal tubes 80.
When the magnetic part 40 passes through from the verifying channel 21 of second insulation tube 50, the magnetic part 40 is always
By resistance, therefore it falls that speed is slow, fall the time than in first insulation tube 20 to fall the time long.And described
Induction coil 51 on two insulation tubes 50 enables to light emitting diode 52 thereon to shine for a long time.When the magnetic part 40 from
When being fallen in the transparent pipe 60, not by any resistance electromagnetic resistance, directly soon fallen with acceleration of gravity.Work as institute
When stating magnetic part 40 and falling in first metal tube 70, slowly declined with slower speed.When the magnetic part 40 falls
When falling in second metal tube 80, enable to generate vortex on second metal tube 80, opposition forces
The overturning of magnetic part 40 and the neighbouring observation slit 88, then slowly land.
It is first insulation tube 20, described for example, first metal tube 70 and second metal tube 80 are copper pipe
Second insulation tube 50, the transparent pipe 60, first metal tube 70 and second metal tube 80 are arranged side by side in the bottom
On seat 10, there are five the taking-up slot 15, five taking-ups slot 15 is respectively aligned to described first absolutely for setting on the pedestal 10
The bottom of edge pipe 20, second insulation tube 50, the transparent pipe 60, first metal tube 70 and second metal tube 80
Portion, in order to take out the magnetic part 40.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Only several embodiments of the present invention are expressed for embodiment described above, and the description thereof is more specific and detailed, but
It cannot be construed as a limitation to the scope of the present invention.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to of the invention
Protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of teaching equipment for verifying Lenz's law, which is characterized in that including pedestal, the first insulation tube and several verifying lines
Circle, several light-emitting components and magnetic part, first insulation tube are set on the pedestal, and several verifying coils are wound
In on first insulation tube, several verifying coils are spaced apart from each other setting, and several light-emitting components are connected to institute
It states on several verifying coils, each light-emitting component forms closed circuit with corresponding verifying coil, and the magnetic part is used for
It is placed in first insulation tube, and declines under the effect of gravity, so that several verifying coils successively generate induced current
To drive several light-emitting components successively to shine.
2. the teaching equipment of verifying Lenz's law according to claim 1, which is characterized in that first insulation tube is
Bright pipe, the light-emitting component are diode, and first insulation tube extends along the vertical direction, and several verifying coils are wound
In on the outer peripheral surface of first insulation tube.
3. it is according to claim 1 verifying Lenz's law teaching equipment, which is characterized in that first insulation tube it is interior
Portion is formed with verifying channel, and the cross section in the verifying channel is circle, and the magnetic part is cylinder, the verifying channel
Diameter is 1-1.3 times of the diameter of the magnetic part.
4. the teaching equipment of verifying Lenz's law according to claim 1, which is characterized in that several verifying coil phases
Mutually insulation, each adjacent two are verified and are formed with isolation spacing between coil, and each verifying coil is in first insulation tube
On standoff height be less than or equal to it is described isolation spacing height.
5. the teaching equipment of verifying Lenz's law according to claim 3, which is characterized in that be provided with water on the pedestal
The flat taking-up slot extended, the taking-up slot is vertical with the verifying channel to be communicated, and the cross section for taking out slot is rectangle.
6. the teaching equipment of verifying Lenz's law according to claim 5, which is characterized in that it further include taking out bar, it is described
It takes out bar activity to be inserted in the taking-up slot, the magnetic part is pushed against out the pedestal, the bottom surface for taking out slot
Middle part is formed with buffer area, and the buffer area is directed at the verifying channel of first insulation tube.
7. the teaching equipment of verifying Lenz's law according to claim 1, which is characterized in that further include being set to the bottom
The second insulation tube on seat is formed with verifying channel in second insulation tube, is wound on the circumferential surface of second insulation tube
Induction coil, the top of the induction coil from second insulation tube extend to the bottom end of second insulation tube, the sense
It answers and is provided with light emitting diode on coil.
8. the teaching equipment of verifying Lenz's law according to claim 1, which is characterized in that further include being set to the bottom
Transparent pipe on seat, the transparent pipe are transparent glass tube or lucite pipe, are formed in the transparent pipe and fall channel,
For passing through for the magnetic part.
9. the teaching equipment of verifying Lenz's law according to claim 1, which is characterized in that further include being set to the bottom
The first metal tube on seat is formed with induction channels in first metal tube, for passing through for the magnetic part, described first
The bottom end of metal tube is formed with observation notch.
10. the teaching equipment of verifying Lenz's law according to claim 1, which is characterized in that further include be set to it is described
The second metal tube on pedestal is formed with channel of inducting in second metal tube, for passing through for the magnetic part, described the
The observation slit being connected to the channel of inducting is also provided on the side wall of two metal tubes, the observation slit is along second gold medal
The short transverse for belonging to pipe extends, and penetrates through the top and bottom end of second metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394180.9A CN109949673A (en) | 2019-05-13 | 2019-05-13 | A kind of teaching equipment for verifying Lenz's law |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394180.9A CN109949673A (en) | 2019-05-13 | 2019-05-13 | A kind of teaching equipment for verifying Lenz's law |
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| CN109949673A true CN109949673A (en) | 2019-06-28 |
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| CN201910394180.9A Pending CN109949673A (en) | 2019-05-13 | 2019-05-13 | A kind of teaching equipment for verifying Lenz's law |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112185220A (en) * | 2019-07-02 | 2021-01-05 | 王燕红 | Electromagnetic experimental device |
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2019
- 2019-05-13 CN CN201910394180.9A patent/CN109949673A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112185220A (en) * | 2019-07-02 | 2021-01-05 | 王燕红 | Electromagnetic experimental device |
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