CN202584519U - Teaching apparatus for demonstrating static electricity - Google Patents
Teaching apparatus for demonstrating static electricity Download PDFInfo
- Publication number
- CN202584519U CN202584519U CN 201220245261 CN201220245261U CN202584519U CN 202584519 U CN202584519 U CN 202584519U CN 201220245261 CN201220245261 CN 201220245261 CN 201220245261 U CN201220245261 U CN 201220245261U CN 202584519 U CN202584519 U CN 202584519U
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- CN
- China
- Prior art keywords
- static electricity
- weight
- demonstrating
- balance
- teaching apparatus
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- 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
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Abstract
The utility model relates to a teaching apparatus for demonstrating static electricity. The teaching apparatus for demonstrating the static electricity comprises a dial plate, a balance rod, an intermediate knife edge, scale knife edges, a weight and an indicating rod, wherein the intermediate knife edge is arranged in the middle of the balance rod, the scale knife edges are respectively arranged at two ends of the balance rod, the weight and an electrified ball are respectively disposed below the scale knife edges, and the indicating rod is provided is used for indicating weight. The teaching apparatus for demonstrating the static electricity measures value of the static electricity through utilization of the balance principle, and transmits electrostatic force by rubbing glass rods and utilizing contact between the glass rods and the electrified ball, and therefore the glass rods reject the electrified ball because of the same pole repulsion. The value of the electrostatic force is measured through the weight and indication function of the indicating rod so that students can obtain a visual image.
Description
Technical field
The utility model relates to a kind of instruments used for education of demonstrating static.
Background technology
Electrostatic force is a kind of power that everybody knows, but wants to experience intuitively its size, needs special instrument; We know in practical teaching, can attract a scrap of paper to observe the size of electrostatic force with pen or the glass bar after the friction, but the shock inadequately after all of this mode; Expressive force is not enough, can not stay deep impression to the people, and this is for teaching; Be very bad phenomenon, because we need other instrument and equipment of demand to demonstrate electrostatic force.
The utility model content
The technical matters that the utility model will solve provides a kind of simple in structure, instruments used for education that can show the size of electrostatic force intuitively.
The content of the utility model is to comprise dial plate, balance stem, be arranged on the middle edge of a knife, the scale pan edge of a knife that is arranged on the balance stem two ends, the sliding weight of steelyard that is arranged on scale pan edge of a knife bottom and charged ball in the middle of the balance stem and the indicator stem that is used to indicate weight.
Said sliding weight of steelyard is arranged in the weighing plate.
The beneficial effect of the utility model is; The utility model utilizes the principle of balance to come the size of measuring stationary electric power; Through the friction glass bar, utilize contacting of glass bar and charged ball to transmit electrostatic force, glass bar and charged ball will repel each other and produce repulsion owing to the same sex like this; The size of utilizing the indicative function of sliding weight of steelyard and indicator stem to come measuring stationary electric power can be given one of student image intuitively.
Perhaps give positive electricity of charged ball with glass bar earlier, utilize the friction rubber bar to give negative electricity of rubber bar then, glass bar is contacted with rubber bar, will attract each other the demonstration principle that there is a natural attraction between the sexes like this.
The utility model can significantly improve the enthusiasm of student's study, improves the quality of study.
Description of drawings
Accompanying drawing is the structural representation of the utility model.
In the drawings, the edge of a knife, 7 charged balls in the middle of 1 dial plate, 2 indicator stems, 3 sliding weight of steelyards, 4 scale pan edges of a knife, 5 balance stems, 6.
Embodiment
Shown in accompanying drawing, the utility model comprises dial plate 1, balance stem 5, is arranged on the middle edge of a knife 6, the scale pan edge of a knife 4 that is arranged on balance stem 5 two ends, the sliding weight of steelyard 3 that is arranged on the scale pan edge of a knife 4 bottoms and the charged ball 7 of balance stem 5 centres and the indicator stem 2 that is used to indicate weight.Said sliding weight of steelyard 3 is arranged in the weighing plate.
The utility model utilizes the principle of balance to come the size of measuring stationary electric power; Through the friction glass bar; Utilize glass bar to transmit electrostatic force with contacting of charged ball 7; Glass bar and charged ball 7 will repel each other and produce repulsion owing to the same sex like this, and the size of utilizing the indicative function of sliding weight of steelyard 3 and indicator stem 2 to come measuring stationary electric power can be given one of student image intuitively.
Perhaps give 7 one positive electricity of charged ball with glass bar earlier, utilize the friction rubber bar to give negative electricity of rubber bar then, glass bar is contacted with rubber bar, will attract each other the demonstration principle that there is a natural attraction between the sexes like this.
The utility model can significantly improve the enthusiasm of student's study, improves the quality of study.
Claims (2)
1. instruments used for education of demonstrating static; It is characterized in that, comprise dial plate (1), balance stem (5), be arranged on balance stem (5) the middle middle edge of a knife (6), the scale pan edge of a knife (4) that is arranged on balance stem (5) two ends, the sliding weight of steelyard (3) that is arranged on the scale pan edge of a knife (4) bottom and charged ball (7) and the indicator stem (2) that is used to indicate weight.
2. the instruments used for education of demonstration static according to claim 1 is characterized in that, said sliding weight of steelyard (3) is arranged in the weighing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245261 CN202584519U (en) | 2012-05-23 | 2012-05-23 | Teaching apparatus for demonstrating static electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245261 CN202584519U (en) | 2012-05-23 | 2012-05-23 | Teaching apparatus for demonstrating static electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202584519U true CN202584519U (en) | 2012-12-05 |
Family
ID=47253907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220245261 Expired - Fee Related CN202584519U (en) | 2012-05-23 | 2012-05-23 | Teaching apparatus for demonstrating static electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202584519U (en) |
-
2012
- 2012-05-23 CN CN 201220245261 patent/CN202584519U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140523 |