CN103606326B - A kind of electrostatic jump-ball experiment instrument of built-in paraffin flame scale block - Google Patents
A kind of electrostatic jump-ball experiment instrument of built-in paraffin flame scale block Download PDFInfo
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- CN103606326B CN103606326B CN201310606008.8A CN201310606008A CN103606326B CN 103606326 B CN103606326 B CN 103606326B CN 201310606008 A CN201310606008 A CN 201310606008A CN 103606326 B CN103606326 B CN 103606326B
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Abstract
An electrostatic jump-ball experiment instrument for built-in paraffin flame scale block, belongs to college physics teaching experimental apparatus.Be made up of flame scale block, transparent square box and plastic comb, it is characterized in that: flame scale block is that the flame black dirt that paraffin flame burning glass test tube is formed makes fritter, transparent square box is the rectangular parallelepiped surrounded with transparent plastic sheet, plastic comb is the plastic comb that width is not less than transparent square box width, flame scale block is put into transparent square box and seals.Its unique distinction of this patent is unlike the prior art, achieve flame scale block and replace aluminum foil metal ball, metal electrode board is instead of with transparent plastic sheet, and do not need independent high-voltage DC power supply, the little operation that is easy to carry of volume, makes extremely simple and easy, successful, in teaching, promotion conference increases more educational function, for our further theoretical research provides good technology to ensure.
Description
Technical field
Patent of the present invention relates to the electrostatic jump-ball experimental apparatus demonstrating a kind of built-in paraffin flame scale block, belongs to college physics teaching experimental apparatus field.
Background technology
In course of University Physics, electrostatic is an important content, the application of electrostatic induction everybody content of paying close attention to especially.For many years, for helping this concept of student's correct understanding and application electrostatic induction, coordinate some lecture experiments that teaching is arranged, as the experiment of electrostatic swing ball, electrostatic drum is tested, electrostatic jump-ball experiment etc., wherein, Chinese patent " demonstrating device for electrostatic jump balls " CN03277642.X is the prill made with aluminium foil placing lightweight between two plate electrodes, and prill is back and forth beated between the battery lead plate of two energisings.Although existing demonstrating device for electrostatic jump balls to some extent solves some needs, but experiment must just can complete by external high-voltage DC power supply, and think to only have metal electrode board and Metal Ball just to there will be electrostatic jump-ball phenomenon to student, in use be not easy to greatly mobile restricted, lack further for learning the raw new experiment inquired into of mechanics of having a surplus, how to accomplish to be convenient to student's self-control or improve, simple, effective, the electrostatic jump-ball experimental apparatus that do not need external high-voltage DC power supply and Metal Ball, this patent will address this problem.
Summary of the invention
Patent of the present invention is a kind of physics demonstration experiment instrument more profoundly demonstrating some features of electrostatic solved under classroom or class, emphatically the solution technology that never needs the electrostatic of external power supply, metal electrode board and Metal Ball to jump ball.
Art solutions of the present invention: a kind of electrostatic jump-ball experiment instrument of built-in paraffin flame scale block, be made up of flame scale block, transparent square box and plastic comb, it is characterized in that: flame scale block is that paraffin flame burning glass test tube formation (thickness is 2mm ~ 4mm) flame black dirt makes fritter (length and width are 2mm ~ 5mm); Transparent square box is the rectangular parallelepiped (long 5cm, wide 4cm, high 2cm ~ 2.5cm) surrounded with transparent plastic sheet (projection film of projector); Plastic comb is the plastic comb that width is not less than transparent square box width, flame scale block is put into transparent square box and seals.
During demonstration, transparent square box is placed in horizontal table top, one hold several lower hair of plastic comb combing (charged) after lie in transparent square box upper surface, at this time see that flame scale block bob just stops for more than 10 time beating, after a while, again lie in transparent square box upper surface with after several lower hair of plastic comb combing again, experimental phenomena has occurred again.Test except identical phenomenon except having to jump ball with prior art electrostatic, unlike: after the flame scale block of the charged demonstration electrostatic jump-ball of plastic comb stops jumping, can beat several times again removing plastic comb moment flame scale block.This experimental phenomena is worth thinking, if by the experimental applications of this patent in college physics teaching, can be to learn has the classmate of surplus energy to provide the Research experiment of a novelty.
The generation of patent thought of the present invention, that inventor herein uses paraffin flame as thermal source in the experiment of development heat engine, thick black flame black dirt has been forged outside the test tube of heat engine work, do to comb one's hair after static electrification near flame scale block certain distance with plastic comb, only see that it is sucked up and is ejected (illustrating that flame scale block is not insulating material) by fierce, and the distance be attracted was than large a lot of (1997 in early time of seen aluminium foil bead material, inventor herein just once used the bead of aluminium foil material as jump-ball, the dingus that high-voltage DC power supply makes electrostatic jump-ball demonstration is substituted with plastic comb static electrification, the experiment failed of success), etui with regard to surrounding with transparent projection film loads test, little being easy to of density due to flame scale block is overcome gravity by electrostatic force, be easy to realize electrostatic jump-ball phenomenon.
Its unique distinction of patent of the present invention is unlike the prior art, achieve flame scale block and replace aluminum foil metal ball, metal electrode board (conductor) is instead of with transparent plastic sheet (insulation), and do not need independent high-voltage DC power supply, the little operation that is easy to carry of volume, makes extremely simple and easy, successful, in teaching, promotion conference increases more educational function, for our further theoretical research provides good technology to ensure.
Accompanying drawing explanation
Accompanying drawing is the structural representation of patent of the present invention.Wherein: (1) is flame scale block, (2) are transparent square boxes, and (3) are plastic combs
Embodiment
As accompanying drawing: a kind of electrostatic jump-ball experiment instrument of built-in paraffin flame scale block, be made up of flame scale block (1), transparent square box (2) and plastic comb (3), it is characterized in that: flame scale block (1) is that paraffin flame burning glass test tube formation (thickness is 2mm ~ 4mm) flame black dirt makes fritter (length and width are 2mm ~ 5mm); Transparent square box (2) is the rectangular parallelepiped (long 5cm, wide 4cm, high 2cm ~ 2.5cm) surrounded with transparent plastic sheet (projection film of projector); Plastic comb (3) is the plastic comb that width is not less than transparent square box (2) width, flame scale block (1) is put into transparent square box (2) sealing.
During demonstration, transparent square box (2) is placed in horizontal table top, one hold several lower hair (charged) of plastic comb (3) combing after lie in transparent square box (2) upper surface, at this time see that flame scale block (1) bob just stops for more than 10 time beating, after a while, again lie in transparent square box (2) upper surface after using several lower hair of plastic comb (3) combing again, experimental phenomena has occurred again.
Claims (1)
1. the electrostatic jump-ball experiment instrument of a built-in paraffin flame scale block, be made up of flame scale block (1), transparent square box (2) and plastic comb (3), it is characterized in that: flame scale block (1) is that the flame black dirt that paraffin flame burning glass test tube is formed makes fritter; Transparent square box (2) is the rectangular parallelepiped surrounded with transparent plastic sheet; Plastic comb (3) is the plastic comb that width is not less than transparent square box (2) width, flame scale block (1) is put into transparent square box (2) sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310606008.8A CN103606326B (en) | 2013-11-17 | 2013-11-17 | A kind of electrostatic jump-ball experiment instrument of built-in paraffin flame scale block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310606008.8A CN103606326B (en) | 2013-11-17 | 2013-11-17 | A kind of electrostatic jump-ball experiment instrument of built-in paraffin flame scale block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103606326A CN103606326A (en) | 2014-02-26 |
| CN103606326B true CN103606326B (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310606008.8A Active CN103606326B (en) | 2013-11-17 | 2013-11-17 | A kind of electrostatic jump-ball experiment instrument of built-in paraffin flame scale block |
Country Status (1)
| Country | Link |
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| CN (1) | CN103606326B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110599876B (en) * | 2019-09-11 | 2021-05-07 | 齐齐哈尔大学 | Method for demonstrating several basic contents of charged body |
| CN110599877B (en) * | 2019-09-11 | 2021-06-04 | 齐齐哈尔大学 | Demonstration device for several basic contents of charged body |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069675U (en) * | 1990-03-30 | 1991-01-23 | 姚福来 | Toy comb using static eletricity |
| CN2651871Y (en) * | 2003-08-15 | 2004-10-27 | 南京师范大学 | Demonstrating device for electrostatic jump balls |
| CN102270402A (en) * | 2010-06-02 | 2011-12-07 | 石际 | Simple electrostatic demonstration device |
| CN203552560U (en) * | 2013-11-17 | 2014-04-16 | 齐齐哈尔大学 | Electrostatic ball jumping experiment instrument with built-in paraffin flame scale block |
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2013
- 2013-11-17 CN CN201310606008.8A patent/CN103606326B/en active Active
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| CN103606326A (en) | 2014-02-26 |
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