CN103810925A - Electronic magnetic moment tester - Google Patents
Electronic magnetic moment tester Download PDFInfo
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- CN103810925A CN103810925A CN201210452937.3A CN201210452937A CN103810925A CN 103810925 A CN103810925 A CN 103810925A CN 201210452937 A CN201210452937 A CN 201210452937A CN 103810925 A CN103810925 A CN 103810925A
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- magnet
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- metal
- presentation device
- magnetic moment
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Abstract
The invention provides an electronic magnetic moment tester and relates to a teaching presentation device. The presentation device comprises a metal micro conductor which cannot be easily magnetized and a magnet. The metal micro conductor is a vertically installed strip-shaped hollow cavity for the magnet to penetrate and can be seen as a closed conductor, the magnet penetrates the metal pipe cavity to fall to cut magnetic lines of force, an induced current is generated in the closed conductor, a magnetic field generated by the current can hinder movement of the magnet, so that the electromagnetic damping phenomenon occurs, the magnet falling speed becomes slow, and time become long. The presentation device is simple in structure, visual in effect and is clear at a glance.
Description
Technical field
The present invention relates to a kind of physics apparatus for demonstrating, particularly a kind of electron magnetic moment exerciser.
Background technology
Electromagnetic damping phenomenon is an important concept in senior middle school physics curriculum, and its phenomenon shows: in the time of closed conductor and magnet generation relative motion, can produce electromagnetic resistance between the two, this electromagnetic resistance can hinder relative motion between the two.This phenomenon comes from electromagnetic induction principle, and can make an explanation with Lenz law: when closed conductor and magnet generation cutting magnetic line movement, the magnetic flux penetrating due to closed conductor changes, closed conductor can produce induced current, and the magnetic field that this electric current produces can hinder both relative motions.Its drag size is proportional to the physical quantity such as magnetic induction density, speed of related movement of magnet.
Summary of the invention
The object of the present invention is to provide a kind of electron magnetic moment exerciser, this device is not only simple in structure, easy to operate, and demonstrative process is directly perceived, easy to understand.
For solving the problems of the technologies described above, the present invention adopts technical scheme as follows: a kind of electron magnetic moment exerciser, comprise the miniature conductor of a metal that is difficult for being magnetized and a magnet, the miniature conductor of described metal is a vertically installation, and the elongated cavity body that can therefrom pass for described magnet.
The miniature conductor of described metal can be regarded as the closed conductor being formed by a circle circle plain conductor coiling, in the time that described magnet falls through its cavity body from the top of the miniature conductor of metal, and there is cutting magnetic line movement between closed conductor, closed conductor produces induced current, and the magnetic field that this electric current produces can hinder both relative motions.As a comparison, place the plastic tube of an equal length on the side of this device, allow magnet fall along this plastics tube chamber, at this moment, magnet will do the movement of falling object, can find that the velocity ratio that magnet falls falls to obviously wanting fast in the miniature conductor of metal, and the required time that lands is obviously short.Therefore,, by device provided by the present invention, make classmates very clear to this electromagnetic damping phenomenon, very directly perceived.The miniature conductor of metal as closed conductor in the present invention must be the material that is difficult for being magnetized, such as copper, aluminium, aluminium alloy or tin etc., can not be necessarily iron etc. easily by the material of attraction, otherwise magnetic ball will be attracted on metal wall of the lumen in the time falling.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention;
Embodiment
In the structural representation of one embodiment of the invention shown in Fig. 1, the miniature conductor 2 of tubular metal is vertically fixed on the cross bar of fixed support post 5, for easy to use, can this fixed support post 5 be made portable.Under the tube chamber of the miniature conductor 2 of metal, place a placing device 4, so that magnetic ball 1 falls into this placing device 4 in lower backwardness.For convenience of observing, on this placing device 4, a LED luminotron 3 is placed in the tube chamber position that faces the miniature conductor 2 of metal.When demonstration, magnetic ball 1 is discharged from the top mouth of pipe of the miniature conductor 2 of metal, the phenomenon of observing is that magnetic ball 1 slowly falls in metal tube chamber, finally drops in placing device 4.
Claims (1)
1. an electron magnetic moment exerciser, comprises the miniature conductor of a metal that is difficult for being magnetized and a magnet, it is characterized in that: the miniature conductor of described metal is a vertically installation, and the elongated cavity body that can therefrom pass for described magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452937.3A CN103810925A (en) | 2012-11-13 | 2012-11-13 | Electronic magnetic moment tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452937.3A CN103810925A (en) | 2012-11-13 | 2012-11-13 | Electronic magnetic moment tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103810925A true CN103810925A (en) | 2014-05-21 |
Family
ID=50707629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210452937.3A Pending CN103810925A (en) | 2012-11-13 | 2012-11-13 | Electronic magnetic moment tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103810925A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389506A (en) * | 2017-09-14 | 2017-11-24 | 深圳市先波科技有限公司 | It is a kind of based on fall magnetic method detection liquid viscosity detection means and its detection method |
| CN114500777A (en) * | 2020-10-27 | 2022-05-13 | 宁波舜宇光电信息有限公司 | Camera module and terminal equipment |
| WO2022152069A1 (en) * | 2021-01-13 | 2022-07-21 | 宁波舜宇光电信息有限公司 | Camera module and terminal device |
-
2012
- 2012-11-13 CN CN201210452937.3A patent/CN103810925A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389506A (en) * | 2017-09-14 | 2017-11-24 | 深圳市先波科技有限公司 | It is a kind of based on fall magnetic method detection liquid viscosity detection means and its detection method |
| CN107389506B (en) * | 2017-09-14 | 2019-03-26 | 深圳市先波科技有限公司 | It is a kind of based on fall magnetic method detection liquid viscosity detection device and its detection method |
| CN114500777A (en) * | 2020-10-27 | 2022-05-13 | 宁波舜宇光电信息有限公司 | Camera module and terminal equipment |
| WO2022152069A1 (en) * | 2021-01-13 | 2022-07-21 | 宁波舜宇光电信息有限公司 | Camera module and terminal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |