CN109360474A - A kind of laboratory apparatus that vacuum can not be transaudient design - Google Patents
A kind of laboratory apparatus that vacuum can not be transaudient design Download PDFInfo
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- CN109360474A CN109360474A CN201811604081.0A CN201811604081A CN109360474A CN 109360474 A CN109360474 A CN 109360474A CN 201811604081 A CN201811604081 A CN 201811604081A CN 109360474 A CN109360474 A CN 109360474A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/14—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for acoustics
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- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Algebra (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Acoustics & Sound (AREA)
- Educational Administration (AREA)
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Abstract
A kind of laboratory apparatus that vacuum can not be transaudient design, mainly source of sound, external control switch, nozzle and phase end are led sound film and are constituted built in vacuum-pumping transparent vessel, when non-vacuum built-in source of sound by air, lead sound film can effectively transaudient audience's ear to distant place, unofficial biography statement is aobvious close to after vacuum inside container when pumping weakens until can't hear, it can effectively show that vacuum can not be transaudient, improve experiment display effect.
Description
Technical field
A kind of laboratory apparatus that vacuum can not be transaudient design, is related to the experiment of Middle School Physics acoustics, and in particular to acoustics experiment
In can not be transaudient about vacuum replication experiment.
Background technique
The laboratory apparatus that Middle School Physics (teaching material) can not be transaudient about vacuum at present, common problem is: in container
When still having gas, as long as the closed container before pumping, from 2 meters of laboratory apparatus other than place will be barely audible in container
Sound source passes through the sound that air is propagated outward, so that Experimental comparison's property effect is deteriorated, the student that listens to the teacher of distant place is hard to tell non-real substantially
Whether sound cannot all propagate from container when empty and when vacuum, it is this there are the problem of make test convincingness reduce,
Audient can be not felt by the voice phenomenon that experiment should disclose.The present invention by design solve can not be transaudient about vacuum experiment
Instrument common problem.
Summary of the invention
A kind of laboratory apparatus that vacuum can not be transaudient design, solves related experiment always used in physics teaching in secondary school
There are the problem of: the sound outflow effect that internal sound source generates after container closure is poor, and the slightly remote people that listens to the teacher is difficult obviously to hear pumping
The sound that the unprecedented container inner air that comes true is propagated from.A kind of vacuum can not transaudient laboratory apparatus be configured as the present invention
Built-in sound source unofficial biography sound intensity is big after container closure and before vacuumizing, when closed container is close true by pumping outward
Built-in sound source unofficial biography sound intensity significantly becomes smaller when empty or at vacuum, can reach the display effect that audient can't hear the sound
Fruit.
Design of the invention is constituted are as follows: vacuum-pumping transparent vessel 1, built-in source of sound buzzer 5 and switch 9, battery
(1.5V) 8 is connected in series；Built-in source of sound buzzer 5 by 1 bottom of container 3 holdings of soft matter 4 and sponge column；Built-in source of sound bee
The input line 6 of ring device 5 passes through 1 bottom side of vacuum-pumping transparent vessel and walks to outside the container, and line 6 is electric lead, this electric lead
It is two, one connects battery (1.5V) 8 cathode outside vacuum-pumping transparent vessel 1, and another a certain foot of connection switch 9 is opened
Close the anode of 9 another foot connection battery (1.5V) 8；It is sealed at 1 bottom side of vacuum-pumping transparent vessel that line 6 passes through and is not leaked
Gas, the container open the circular port pipe that a diameter is not less than 2 centimetres, the opening of this mouthful of pipe in addition to air exhaust nozzle 7, at top or side wall
It is sealed with sound film 2 is led；Leading sound film 2 can be made of objects such as common food fresh keeping membrane, common balloon rubber skins.
Detailed description of the invention:
Fig. 1 is the laboratory apparatus design diagram that a kind of vacuum can not be transaudient, respectively marks representative component names such as in attached drawing
Under:
Vacuum-pumping transparent vessel 1
Lead sound film 2
Sponge column 3
Soft matter 4
Built-in source of sound buzzer 5
Line 6
Air exhaust nozzle 7
Battery (1.5V) 8
Switch 9
Specific embodiment:
When display experiment, first opening air exhaust nozzle 7 makes vacuum-pumping transparent vessel 1 full of air, connects air extractor, closes before pumping
Combination switch 9, built-in 5 sounding of source of sound buzzer lead the transmitting of sound film 2 by inner air and mouth pipe, at a distance within 18 meters
Audience can understand the sounding for hearing built-in source of sound buzzer 5, keep built-in source of sound buzzer 5 to work, start to be evacuated, make to take out true
Empty transparent vessel 1 moves closer to vacuum, and audience obviously feels that built-in 5 sounding of source of sound buzzer gradually weakens, to effectively test
Demonstrate,proving vacuum can not be transaudient.
Claims (1)
1. design of the invention is constituted are as follows: vacuum-pumping transparent vessel 1, built-in source of sound buzzer 5 and switch 9, battery
(1.5V) 8 is connected in series；Built-in source of sound buzzer 5 by 1 bottom of container 3 holdings of soft matter 4 and sponge column；Built-in source of sound bee
The input line 6 of ring device 5 passes through 1 bottom side of vacuum-pumping transparent vessel and walks to outside the container, and line 6 is electric lead, this electric lead
It is two, one connects battery (1.5V) 8 cathode outside vacuum-pumping transparent vessel 1, and another a certain foot of connection switch 9 is opened
Close the anode of 9 another foot connection battery (1.5V) 8；It is sealed at 1 bottom side of vacuum-pumping transparent vessel that line 6 passes through and is not leaked
Gas, the container open the circular port pipe that a diameter is not less than 2 centimetres, the opening of this mouthful of pipe in addition to air exhaust nozzle 7, at top or side wall
It is sealed with sound film 2 is led；Leading sound film 2 can be made of objects such as common food fresh keeping membrane, common balloon rubber skins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604081.0A CN109360474A (en) | 2018-12-26 | 2018-12-26 | A kind of laboratory apparatus that vacuum can not be transaudient design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811604081.0A CN109360474A (en) | 2018-12-26 | 2018-12-26 | A kind of laboratory apparatus that vacuum can not be transaudient design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109360474A true CN109360474A (en) | 2019-02-19 |
Family
ID=65329433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811604081.0A Pending CN109360474A (en) | 2018-12-26 | 2018-12-26 | A kind of laboratory apparatus that vacuum can not be transaudient design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109360474A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111145620A (en) * | 2020-01-20 | 2020-05-12 | 艾迪技术创新私人有限公司 | Teaching apparatus for demonstrating sound transmission through air |
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|---|---|---|---|---|
| CN2534642Y (en) * | 2002-04-05 | 2003-02-05 | 韩德君 | Inner ear type vacuum bell |
| WO2007105609A1 (en) * | 2006-03-14 | 2007-09-20 | National University Corporation Chiba University | Sectional desk experiment method and device |
| CN101593446A (en) * | 2008-05-26 | 2009-12-02 | 徐超 | A kind of sound transmission teaching aid |
| CN202332015U (en) * | 2011-11-10 | 2012-07-11 | 田雨 | Experimental device for sound transmission incapability in vacuum |
| CN202795843U (en) * | 2012-08-02 | 2013-03-13 | 朱长明 | Experimental demonstration device for sound transmission incapability in vacuum |
| CN203966403U (en) * | 2014-01-22 | 2014-11-26 | 杨俊伟 | The teaching demonstration device that a kind of vacuum is not transaudient |
| CN107967849A (en) * | 2017-12-18 | 2018-04-27 | 李志忠 | One kind visualization, digital display type sound propagation demonstrator |
-
2018
- 2018-12-26 CN CN201811604081.0A patent/CN109360474A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2534642Y (en) * | 2002-04-05 | 2003-02-05 | 韩德君 | Inner ear type vacuum bell |
| WO2007105609A1 (en) * | 2006-03-14 | 2007-09-20 | National University Corporation Chiba University | Sectional desk experiment method and device |
| CN101593446A (en) * | 2008-05-26 | 2009-12-02 | 徐超 | A kind of sound transmission teaching aid |
| CN202332015U (en) * | 2011-11-10 | 2012-07-11 | 田雨 | Experimental device for sound transmission incapability in vacuum |
| CN202795843U (en) * | 2012-08-02 | 2013-03-13 | 朱长明 | Experimental demonstration device for sound transmission incapability in vacuum |
| CN203966403U (en) * | 2014-01-22 | 2014-11-26 | 杨俊伟 | The teaching demonstration device that a kind of vacuum is not transaudient |
| CN107967849A (en) * | 2017-12-18 | 2018-04-27 | 李志忠 | One kind visualization, digital display type sound propagation demonstrator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111145620A (en) * | 2020-01-20 | 2020-05-12 | 艾迪技术创新私人有限公司 | Teaching apparatus for demonstrating sound transmission through air |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190219 |