CN203276681U - Experiment demonstration device employing gas thermal expansion to demonstrate joule law - Google Patents
Experiment demonstration device employing gas thermal expansion to demonstrate joule law Download PDFInfo
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- CN203276681U CN203276681U CN2013203468565U CN201320346856U CN203276681U CN 203276681 U CN203276681 U CN 203276681U CN 2013203468565 U CN2013203468565 U CN 2013203468565U CN 201320346856 U CN201320346856 U CN 201320346856U CN 203276681 U CN203276681 U CN 203276681U
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- flask
- bottle stopper
- heating wire
- glass tube
- demonstrate
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Abstract
The utility model belongs to the technical field of teaching tools, and specifically relates to an experiment demonstration device employing gas thermal expansion to demonstrate joule law; the device comprises a flask (1), a bottle stopper (2), a glass tube (3), a heating wire (4) and alcohol (5); the device is characterized in that the bottle stopper (2) is arranged on an end port of the flask (1); the glass tube (3) is arranged in the flask and the alcohol (5) is arranged in the bottom of the flask; and the heating wire (4) penetrates the bottle stopper (2) and two ends of the heating wire (4) are respectively connected in series with detection apparatuses. The detection apparatuses comprise an ammeter (6), a slide rheostat (7), a switch (8) and a power (9); and the power (9) and the switch (8), the slide rheostat (7) and the ammeter (6) are mutually connected in series. The beneficial effects are that the device is simple in structure and strong in practicality; and when the device is introduced in experiments, interest of the experiment can be improved, and teaching effect of the class can be strengthened.
Description
Technical field
The utility model belongs to the teaching aid technical field, is specifically related to demonstrate the Joule Law Experiment apparatus for demonstrating with when gases are heated, they expand.
Background technology
Left experimental teaching, the physics teaching reform of substance, essence of just being far from being, let alone implement in full quality-oriented education and advance the reform of fresh course.Therefore, experiment is the important component part of physics teaching, is the important step that improves the junior middle school physics teaching quality, and tool is of great significance in physics teaching.Experimental teaching is discharged rate lower junior high school, rural area from and is analyzed, inquires into the experimental teaching present situation, will get positive facilitation to the raising that rate is discharged in our junior middle school chemistry experimental teaching from.
Because physical and chemical experiment and current techique practice can creativeness be carried out the current techique teaching in conjunction with carrying out, can promote again the experimental teaching of physics and chemistry fresh course; Designing Self-made Realia can cultivate student's innovation ability, improve its comprehensive attainment, homemade various teaching aid can replenish again the deficiency of existing instrument, so teaching aid that current techique practice and physics, Physical Experiment innovation realization are merged, it has embodied the design concept of current techique, green physics theory and physical knowledge principle, has really reached the standard that material was easy to get, made simple, environmental protection, is easy to promote.This teaching aid is suitable for the student to be made personally, to cultivate its innovation and integrated practice ability.
The junior physics experiment is the important method that the student understands, studies the natural law, it is the basis of whole physics teaching, it is the main path of cultivating student's hands-on and thinking ability, also the effective means that the help student understands physics key concept, ultimate principle, the basis of the forward position of quality-oriented education and innovative education and basic educational reform, precondition and guarantee especially.Left experimental teaching, the physics teaching reform of substance, essence of just being far from being, let alone implement in full quality-oriented education and advance the reform of fresh course.Therefore, experiment is the important component part of physics teaching, is the important step that improves the junior middle school physics teaching quality, and tool is of great significance in physics teaching.Experimental teaching is discharged rate lower junior high school, rural area from and is analyzed, inquires into the experimental teaching present situation, will get positive facilitation to the raising that rate is discharged in our junior physics experimental teaching from.
Summary of the invention
The purpose of this utility model be exactly to provide that a kind of simple in structure, speed of experiment is fast, the use that improves classroom efficiency when gases are heated, they expand demonstration Joule Law Experiment apparatus for demonstrating.
The utility model is achieved through the following technical solutions:
Demonstrate the Joule Law Experiment apparatus for demonstrating with when gases are heated, they expand, comprise flask 1, bottle stopper 2, glass tube 3, heating wire 4 and alcohol 5, it is characterized in that: described flask 1 port is provided with bottle stopper 2, glass tube 3 is located at its inside, alcohol 5 is placed in its bottom, and wherein heating wire 4 penetrates bottle stopper 2 and heating wire 4 two ends and connects respectively and be circumscribed with pick-up unit.
Described pick-up unit comprises reometer 6, slide rheostat 7, switch 8 and power supply 9, and wherein power supply 9 and switch 8, slide rheostat 7, reometer 6 are connected in series mutually.
Described glass tube 3 one ends penetrate bottle stopper 2, and its other end extends to flask 1 bottom.
Compared with prior art, the beneficial effects of the utility model are:
The flask 1 that the utility model provides, bottle stopper 2, glass tube 3, heating wire 4 and alcohol 5 etc. are pinched the teaching aid of the article assembled configuration complexity of coming at one's side conveniently, compare with experimental facilities in the past, have reached material and have been easy to get, make simple, a multi-purpose instrument.And in daily experiment, this teaching aid can use continuously, pollution-free, simple in structure, can use on a large scale popularization, and meet " green experiment " theory, simplified experimentation, the presentation process that it is vivid makes whole teaching process effect remarkable, has greatly promoted the aspiration to knowledge of student's Scientific exploration.The beneficial effects of the utility model are: simple in structure, practical, the utility model is introduced the experiment used time, can strengthen interest, can produce fascinating effect, thisly found situation, bring out problem, extend the method for expanding, introduce new class and can reduce knowledge difficulty on teaching material, strengthen the teaching efficiency of this class.
Description of drawings
Fig. 1 is one-piece construction schematic diagram of the present utility model.
In figure: flask 1, bottle stopper 2, glass tube 3, heating wire 4, alcohol 5, reometer 6, slide rheostat 7, switch 8, power supply 9.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
Demonstrate the Joule Law Experiment apparatus for demonstrating with when gases are heated, they expand, comprise flask 1, bottle stopper 2, glass tube 3, heating wire 4, alcohol 5, reometer 6, slide rheostat 7, switch 8 and power supply 9.
As shown in drawings, wherein flask 1 port is provided with bottle stopper 2, and glass tube 3 is located at flask 1 inside, and alcohol 5 is placed in flask 1 bottom, and glass tube 3 one ends penetrate bottle stopper 2, and glass tube 3 other ends extend to flask 1 bottom; Wherein heating wire 4 penetrates bottle stopper 2 and heating wire 4 two ends and connects respectively and be circumscribed with pick-up unit, and pick-up unit comprises reometer 6, slide rheostat 7, switch 8 and power supply 9, and wherein power supply 9 and switch 8, slide rheostat 7, reometer 6 are connected in series mutually.
The utility model is when concrete the use, at first Closing Switch 8, slide rheostat 7 is arranged on the larger end of resistance, this moment, heating wire 4 began heating, because the resistance of slide rheostat 7 is large, thereby heating wire 4 mechanical efficiencies are not obvious, and the pressure in flask 1 is low, and the height of alcohol 5 risings in glass tube 3 is not remarkable at this moment; And when slide rheostat 7 being slided into the less end of resistance, this moment, heating wire 4 thermal values strengthened, and made the pressure in flask 1 increase, and caused alcohol 5 ascensional ranges in glass tube 3 larger.
Claims (3)
1. demonstrate the Joule Law Experiment apparatus for demonstrating with when gases are heated, they expand, comprise flask (1), bottle stopper (2), glass tube (3), heating wire (4) and alcohol (5), it is characterized in that: described flask (1) port is provided with bottle stopper (2), glass tube (3) is located at its inside, alcohol (5) is placed in its bottom, and wherein heating wire (4) penetrates bottle stopper (2) and heating wire (4) two ends and connects respectively and be circumscribed with pick-up unit.
2. use as claimed in claim 1 when gases are heated, they expand demonstration Joule Law Experiment apparatus for demonstrating, it is characterized in that: described pick-up unit comprises reometer (6), slide rheostat (7), switch (8) and power supply (9), and wherein power supply (9) and switch (8), slide rheostat (7), reometer (6) are connected in series mutually.
3. use as claimed in claim 1 when gases are heated, they expand demonstration Joule Law Experiment apparatus for demonstrating, it is characterized in that: described glass tube (3) one ends penetrate bottle stopper (2), and its other end extends to flask (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203468565U CN203276681U (en) | 2013-06-17 | 2013-06-17 | Experiment demonstration device employing gas thermal expansion to demonstrate joule law |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203468565U CN203276681U (en) | 2013-06-17 | 2013-06-17 | Experiment demonstration device employing gas thermal expansion to demonstrate joule law |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203276681U true CN203276681U (en) | 2013-11-06 |
Family
ID=49507046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203468565U Expired - Fee Related CN203276681U (en) | 2013-06-17 | 2013-06-17 | Experiment demonstration device employing gas thermal expansion to demonstrate joule law |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203276681U (en) |
-
2013
- 2013-06-17 CN CN2013203468565U patent/CN203276681U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20150617 |
|
| EXPY | Termination of patent right or utility model |