CN2876943Y - Demonstrator for magnetic field repulsion and distance relation - Google Patents
Demonstrator for magnetic field repulsion and distance relation Download PDFInfo
- Publication number
- CN2876943Y CN2876943Y CN 200520046574 CN200520046574U CN2876943Y CN 2876943 Y CN2876943 Y CN 2876943Y CN 200520046574 CN200520046574 CN 200520046574 CN 200520046574 U CN200520046574 U CN 200520046574U CN 2876943 Y CN2876943 Y CN 2876943Y
- Authority
- CN
- China
- Prior art keywords
- pole
- magnetic pole
- distance
- utility
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a demonstrating teaching aid of mechanical principles for senior middle school physics. General laboratories in middle school can not provide the experiments relating to universal gravitation and coulomb force. The art of the utility model is to verify mechanical principles using the interaction force between magnetic poles. A demonstrator for magnetic field repulsion and distance relation consists of an experiment frame, a scale, a lower magnetic pole, a pointer, an upper magnetic pole, a counterweight and a central pole. Using the change of mutual repulsive force between two magnetic poles lead to the rhythmic change of distance between two magnetic poles, the utility model can demonstrate the relation between force and distance, and this demonstrator experiment shows that repulsive force is inversely proportional to distance square between magnetic poles. The positive effect of the utility model lies in that the conclusion of inverse proportion of repulsive force and distance square between magnetic poles can be seen simply, clearly and accurately. Furthermore, the utility model is easy to draw materials, simple to make, convenient to operate, and can be popularized in broad schools.
Description
Technical field
The utility model relates to the teaching demonstration teaching aid that a kind of high school physics is learned, and particularly demonstrates a kind of demonstration teaching aid of relevant mechanics principle aspect.
Technical background
In the teaching process of high school physics, particularly in mechanics, electricity teaching, the relevant universal gravitation of mentioning and the knowledge of Coulomb force, the size of all pointing out above-mentioned two kinds of power on the principle all and between two things distance square be inversely proportional to, but when doing confirmatory experiment, because of being subjected to the restriction of condition, general laboratory, middle school all can't provide this confirmatory experiment.Market does not have this type of teaching aid for choosing yet, and influences spreading of knowledge, influences the further raising of quality of instruction yet.
Summary of the invention
At above-mentioned situation, how seeking one has the experiment of this similar rule (being that power and square distance are inversely proportional to) to demonstrate equally, can verify the described principle in the course teaching equally, is the purpose of this utility model place.The technical solution of the utility model is to select magnetic material as experiment material, utilizes magnetic pole interphase interaction power to verify mechanics principle.The utility model is to state measure by following skill to come specific implementation: a kind of magnetic field repulsive force and distance relation demonstration instrument that utilizes the interaction force between the magnetic material, it is characterized in that it is by experiment frame 1, scale 2, lower magnetic pole 3, pointer 4, last magnetic pole 5, counterweight 6 and center-pole 7 are formed, wherein: experiment frame 1, scale 2, pointer 4, counterweight 6 and center-pole 7 are nonmagnetic substance and make, center-pole 7 is fixed on the center on the experiment frame 1, last magnetic pole 5, lower magnetic pole 3 and counterweight 6 all are ring-types, intermediate throughholes, be actively set on the center-pole 7, lower magnetic pole 3 and last magnetic pole 5 are identical in quality, and select for use the magnetic material of tool common flux to make, and magnetic pole forms the mutually exclusive state of the same sex relatively and is installed on the center-pole 7, pointer 4 is fixed on the magnetic pole 5, and the scale mark of sensing scale 2, counterweight 6 is several piece and last magnetic pole 5 a ring-type object identical in quality, and quantity is the 3-8 piece.A kind of method of demonstrating magnetic field repulsive force and distance relation demonstration instrument: it is characterized in that earlier described lower magnetic pole 3 being enclosed within on the experiment frame 1 of center-pole 7 lower ends, to go up magnetic pole 5 again and be enclosed within the centre of center-pole 7, because it is last, two relative down pole polarity are identical, the formation same sex is repelled each other, the effect that utilizes this same sex to repel mutually is suspended in the air magnetic pole 5, utilize the scale value of 4 cuing scales 2 of pointer, be the distance of two pole center positions, above last magnetic pole 5, place three counterweights with last magnetic pole 5 equals in quality then again, the general assembly (TW) that makes suspension is original 4 times, measure the distance of two pole center positions once more, when finding that suspension gravity is original 4 times, centre distance is original 1/2nd between magnetic pole, experimental results show that by this: the size of repulsive force and square result who is inversely proportional to of distance mutually between like pole.Equally, be increased to original 9 times as suspension gravity, then distance is original 1/3rd, and the accuracy of confirmatory experiment is very high once more.
Good effect of the present utility model is the demonstration by this demonstrator, simply, the solution of Ming Liaoing square theorem that is inversely proportional to of size distance all and between two articles of the universal gravitation learnt in senior middle school's textbook and Coulomb force, originally be to be difficult to demonstration, more can't do student experimenting.The utility model can more accurately be demonstrated out the conclusion that repulsion between two magnetic poles and square distance are inversely proportional to.That moreover this utility model is drawn materials easily, made is simple, easy to operate, can promote in vast school.
Description of drawings
Fig. 1: the utility model magnetic field repulsive force and distance relation demonstration instrument structural representation,
The meaning that each legend mark is expressed as follows respectively among the figure:
1----experiment frame 2----scale 3----lower magnetic pole 4----pointer
The last magnetic pole 6----of 5----counterweight 7----center-pole
Embodiment
Structure below in conjunction with embodiment and Fig. 1 is further described below the utility model:
Present embodiment is in conjunction with classroom instruction, utilize a demonstrator of the present utility model of existing material: get the fixedly circular magnet on two useless loudspeakers, insert glass test tube in the interstitial hole, vertically be fixed on the Demonstration table with cementing agent, a graduated scale is fixed on next door vertically bonding, above paste a spear pointer on circular magnet outer peripheral face and point to scale label, the effect that utilizes the magnetic field same sex to repel mutually is suspended in the air top circular magnet, measure the distance of two magnetic blow out centre positions, the top of circular magnet is placed three aluminium blocks with the magnet equal in quality more in the above then, the general assembly (TW) that makes suspension is original 4 times, measure the distance of two magnetic blow out centre positions once more, when finding that suspension gravity is original 4 times, centre distance is original 1/2nd between magnet, experimental results show that by this: the size of repulsive force and square result who is inversely proportional to of distance mutually between same sex magnet.Equally, be increased to original 9 times as suspension gravity, then distance is original 1/3rd, and the accuracy of confirmatory experiment is very high once more.
Claims (2)
1. a magnetic field repulsive force and distance relation demonstration instrument that utilizes the interaction force between the magnetic material, it is characterized in that it is by experiment frame [1], scale [2], lower magnetic pole [3], pointer [4], last magnetic pole [5], counterweight [6] and center-pole [7] are formed, wherein: experiment frame [1], scale [2], pointer [4], counterweight [6] and center-pole [7] are nonmagnetic substance and make, center-pole [7] is fixed on the center on the experiment frame [1], last magnetic pole [5], lower magnetic pole [3] and counterweight [6] all are ring-types, intermediate throughholes, be actively set on the center-pole [7], lower magnetic pole [3] and last magnetic pole [5] are identical in quality, and select for use the magnetic material of tool common flux to make, and magnetic pole forms the mutually exclusive state of the same sex relatively and is installed on the center-pole [7], pointer [4] is fixed on the magnetic pole [5], and the scale mark of sensing scale [2], counterweight [6] is several piece and last magnetic pole [5] ring-type object identical in quality.
2. magnetic field repulsive force according to claim 1 and distance relation demonstration instrument, the quantity that it is characterized in that described counterweight [6] is the 3-8 piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046574 CN2876943Y (en) | 2005-11-16 | 2005-11-16 | Demonstrator for magnetic field repulsion and distance relation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046574 CN2876943Y (en) | 2005-11-16 | 2005-11-16 | Demonstrator for magnetic field repulsion and distance relation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876943Y true CN2876943Y (en) | 2007-03-07 |
Family
ID=37820180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046574 Expired - Fee Related CN2876943Y (en) | 2005-11-16 | 2005-11-16 | Demonstrator for magnetic field repulsion and distance relation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2876943Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217633A (en) * | 2013-05-30 | 2014-12-17 | 李忠相 | Quantitative coulomb law demonstrating scheme |
| CN109308832A (en) * | 2017-07-26 | 2019-02-05 | 昆山市苞蕾众创投资管理有限公司 | Demonstrate the device of reckoning by the piece of magnetic force size |
| CN110599873A (en) * | 2019-07-31 | 2019-12-20 | 苏州市职业大学 | Teaching device for measuring magnetic distance and magnetic force |
-
2005
- 2005-11-16 CN CN 200520046574 patent/CN2876943Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104217633A (en) * | 2013-05-30 | 2014-12-17 | 李忠相 | Quantitative coulomb law demonstrating scheme |
| CN109308832A (en) * | 2017-07-26 | 2019-02-05 | 昆山市苞蕾众创投资管理有限公司 | Demonstrate the device of reckoning by the piece of magnetic force size |
| CN109308832B (en) * | 2017-07-26 | 2021-12-21 | 昆山市苞蕾众创投资管理有限公司 | Counting device for demonstrating magnetism |
| CN110599873A (en) * | 2019-07-31 | 2019-12-20 | 苏州市职业大学 | Teaching device for measuring magnetic distance and magnetic force |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2876943Y (en) | Demonstrator for magnetic field repulsion and distance relation | |
| CN206833769U (en) | A kind of senior middle school physics teaching inclined plane demonstrating device | |
| CN1790443A (en) | Magnetic field repulsive force and distance relation demonstration instrument and demonstration method | |
| CN109935142A (en) | A kind of apparatus for demonstrating that can demonstrate different types of active force and reaction force | |
| CN210680213U (en) | High school mathematics plane geometry teaching demonstration ware | |
| CN202929916U (en) | Acting force and counterforce demonstration device | |
| CN204946376U (en) | A kind of English word aided education apparatus | |
| CN201518175U (en) | Novel permanent magnet suspension demonstrating instrument | |
| CN201859581U (en) | Projection magnetic force line spectrum demonstration device | |
| CN209018267U (en) | Art Design shows device | |
| CN202650348U (en) | Single pendulum frequency and pendulum length experimental instrument | |
| CN201017505Y (en) | Magnetic suspension demonstration device | |
| CN2404111Y (en) | Magnetic measuring balance | |
| CN206021687U (en) | A kind of friction coefficient apparatus for demonstrating | |
| CN201311730Y (en) | Combined teaching tool | |
| CN201607852U (en) | Demonstrator of uniform linear motion of object | |
| CN201405627Y (en) | Magnetic teaching demonstration board | |
| CN201327685Y (en) | Visual contrast electromagnetic damping demonstration device | |
| CN205247719U (en) | Mathematics learning apparatus | |
| CN204480535U (en) | Novel Russian teaching card suspender | |
| CN204270536U (en) | Chinese-character order of strokes teaching matts magnetic force chalk small blackboard instructional device | |
| CN211207731U (en) | Dynamic circle simulation demonstration teaching aid for charged particle magnetic field | |
| CN202008764U (en) | Mechanical demonstration teaching tool | |
| CN211427648U (en) | Angular momentum conservation law demonstration instrument | |
| CN203631018U (en) | Two-dimensional magnetic suspension dynamics experiment instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |