CN203882513U - Photoelectric effect demonstration instrument - Google Patents
Photoelectric effect demonstration instrument Download PDFInfo
- Publication number
- CN203882513U CN203882513U CN201420282733.4U CN201420282733U CN203882513U CN 203882513 U CN203882513 U CN 203882513U CN 201420282733 U CN201420282733 U CN 201420282733U CN 203882513 U CN203882513 U CN 203882513U
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- CN
- China
- Prior art keywords
- electroscope
- pointer
- photoelectric effect
- demonstration instrument
- cloche
- 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
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Abstract
The utility model discloses a photoelectric effect demonstration instrument and belongs to the physics experimental instrument technical field. The photoelectric effect demonstration instrument includes a pointer electroscope, a zinc plate and an arc lamp which are sequentially arranged on a horizontal desktop; the pointer electroscope is connected with the zinc plate through a wire; the pointer electroscope is covered with a sealed glass cover; a rubber gasket is arranged below the sealed glass cover; and the sealed glass cover is connected with a vacuum air pump. Compared with a traditional photoelectric effect demonstration instrument, the vicinity of the pointer electroscope of the photoelectric effect demonstration instrument of the utility model can be guaranteed as an approximately vacuum state, and therefore, even if under a humid experiment condition, an electric leakage phenomenon will not occur on the pointer electroscope, and the normal demonstration of an photoelectric effect can be ensured.
Description
Technical field
The utility model relates to physical experiment apparatus technical field, specifically a kind of photoelectric effect demonstrator.
Background technology
Electroscope in existing photoelectric effect demonstrator is exposed in air, and when there was dampness in the air, leaky can occur electroscope, and galvanoscopic pointer can not open, and experiment cannot normally be demonstrated.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art part, the utility model provides a kind of photoelectric effect demonstrator, even under the experiment condition that there was dampness in the air, also can observe obvious photoelectric effect.
The utility model is achieved by the following technical solution: a kind of photoelectric effect demonstrator, comprises the pointer electroscope, zine plate and the arc lamp that are successively placed in horizontal table top; Described pointer electroscope is connected with zine plate by wire; Described pointer electroscope is covered with an airtight cloche, at airtight cloche, has rubber washer; Described airtight cloche is connected with vacuum air pump.
In the utility model, zine plate and arc lamp, in sustained height, during experiment, need to be wiped brightly zine plate; Then, opening vacuum air pump is pumped into airtight cloche inside to approach vacuum; Open arc lamp again, allow arc light be radiated on zine plate, galvanoscopic pointer opens, and illustrates that, under the irradiation of arc lamp, the surface of zine plate has electronics to fly out, and photoelectric effect has occurred.
The beneficial effects of the utility model are: compare traditional photoelectric effect demonstrator, utilize vacuum air pump, airtight cloche and rubber washer that pointer electroscope is pumped into and is approached vacuum state around, even like this under moist experiment condition, can there is not leaky in pointer electroscope yet, guarantee that photoelectric effect can normally demonstrate, the utility model can be got rid of the impact of weather condition on lecture experiment.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
In figure: 1, horizontal table top; 2, vacuum air pump; 3, airtight cloche; 4, pointer electroscope; 5, rubber washer; 6, wire; 7, zine plate; 8, arc lamp.
Embodiment
Be below a specific embodiment of the present utility model, now by reference to the accompanying drawings the utility model be described further.
A kind of photoelectric effect demonstrator is as shown in Figure 1 placed with successively pointer electroscope 4, zine plate 7 and arc lamp 8 in horizontal table top 1, and pointer electroscope 4 is connected with zine plate 7 by wire 6, and zine plate 7 and arc lamp 8 are in sustained height; At pointer electroscope 4, be covered with airtight cloche 3, airtight cloche 3 is the transparent covers that are half capsule shape, is provided with a rubber washer 5 for sealing between airtight cloche 3 and horizontal table top 1; In experimentation, need to zine plate 7 be wiped brightly.
Measuring principle and method are as follows: pointer electroscope 4, zine plate 7 and arc lamp 8 are successively placed in horizontal table top 1, regulate zine plate 7 and arc lamp 8 to make them on sustained height; Zine plate 7 is wiped brightly, with wire 6, pointer electroscope 4 is connected with zine plate 7; Airtight cloche 3 on pointer electroscope 4 outer covers, airtight cloche 3 times, connects airtight cloche 3 and vacuum air pump 2 by rubber washer 5 pad, opens vacuum air pump 2 airtight cloche 3 inside are pumped into and are approached vacuum; Open arc lamp 8 again, allow arc light be radiated on zine plate 7, the pointer of pointer electroscope 4 opens, and illustrates that, under the irradiation of arc lamp 8, the surface of zine plate 7 has electronics to fly out, and photoelectric effect has occurred.
Claims (1)
1. a photoelectric effect demonstrator, comprises the pointer electroscope (4), zine plate (7) and the arc lamp (8) that are successively placed in horizontal table top (1); Described pointer electroscope (4) is connected with zine plate (7) by wire (6); It is characterized in that: described pointer electroscope (4) is covered with an airtight cloche (3), at airtight cloche (3), has rubber washer (5); Described airtight cloche (3) is connected with vacuum air pump (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282733.4U CN203882513U (en) | 2014-05-30 | 2014-05-30 | Photoelectric effect demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282733.4U CN203882513U (en) | 2014-05-30 | 2014-05-30 | Photoelectric effect demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203882513U true CN203882513U (en) | 2014-10-15 |
Family
ID=51682989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420282733.4U Expired - Fee Related CN203882513U (en) | 2014-05-30 | 2014-05-30 | Photoelectric effect demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203882513U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342006A (en) * | 2017-09-05 | 2017-11-10 | 合肥探奥教育科技有限公司 | A kind of photoelectric effect apparatus for demonstrating for being applied to teaching |
| CN107991208A (en) * | 2015-12-08 | 2018-05-04 | 四川大学 | The method for reducing barometric surveying Millikan oil drop balanced voltage |
-
2014
- 2014-05-30 CN CN201420282733.4U patent/CN203882513U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991208A (en) * | 2015-12-08 | 2018-05-04 | 四川大学 | The method for reducing barometric surveying Millikan oil drop balanced voltage |
| CN107991208B (en) * | 2015-12-08 | 2020-06-19 | 四川大学 | Method for reducing equilibrium voltage of Millikan oil drops measured by air pressure |
| CN107342006A (en) * | 2017-09-05 | 2017-11-10 | 合肥探奥教育科技有限公司 | A kind of photoelectric effect apparatus for demonstrating for being applied to teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |