CN204990917U - Device that demonstration sound was propagated - Google Patents
Device that demonstration sound was propagated Download PDFInfo
- Publication number
- CN204990917U CN204990917U CN201520691251.9U CN201520691251U CN204990917U CN 204990917 U CN204990917 U CN 204990917U CN 201520691251 U CN201520691251 U CN 201520691251U CN 204990917 U CN204990917 U CN 204990917U
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- CN
- China
- Prior art keywords
- drum
- steel ball
- propagated
- utility
- sound
- 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 device that demonstration sound was propagated, the device include base, first drum, second drum, branch, string, steel ball, 20 centimetres and lie in the base are separated by to first drum and second drum, are fixing branch above the second drum, and a steel ball has been hung through the string to branch, a drum face contact of steel ball and second drum. Because the structure is used, the utility model discloses the principle that can very audio -visually demonstrate sound and propagate makes understandable easy learning of student, the improvement results of learning.
Description
Technical field
The utility model belongs to experimental teaching technical field, particularly relates to the device that a kind of demonstrating sound is propagated.
Background technology
In current teaching, be a teacher when explaining sound transmission phenomenon, for the student just touching this respect knowledge, indigestion, bring certain difficulty to teaching, in order to student can be allowed to carry out theories of learning knowledge by macroscopic appearance, understand essence by phenomenon, we are in teaching for many years, have devised a kind of can demonstrating sound propagate device.
Summary of the invention
The purpose of this utility model is to provide the device that a kind of vividly directly perceived, easy to operate demonstrating sound is propagated.
The purpose of this utility model is achieved through the following technical solutions, the device that this demonstrating sound is propagated comprises base, the first drum, the second drum, pole, cord, steel ball, described first drum is separated by 20 centimetres and be positioned on base with the second drum, pole is fixed wtih above second drum, pole has hung a steel ball by cord, and steel ball contacts with a drum surface of the second drum.
When knocking the first drum, tum propagates on the second drum, and its drum head is vibrated, thus the lob on the right is swung, and thus observes sound transmission phenomenon.
The beneficial effects of the utility model: due to adopt said structure, the utility model can very intuitively demonstrating sound propagate principle, make student understandable easy to learn, improve results of learning.
Accompanying drawing explanation
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing
Fig. 1 is schematic diagram of the present utility model
In figure: 1, base 2, first drum 3, second drum 4, pole 5, cord 6, steel ball.
Embodiment
As shown in Figure 1, the device that this demonstrating sound is propagated comprises base 1, first drum 2, second drum 3, pole 4, cord 5, steel ball 6, first drum 2 and the second drum 3 are separated by 20 centimetres and be positioned on base 1, second drum 3 is fixed wtih pole 4 above, pole 4 has hung a steel ball 6 by cord 5, and steel ball 6 contacts with a drum surface of the second drum 3.
Claims (1)
1. the device of a demonstrating sound propagation, it is characterized in that this device comprises base, the first drum, the second drum, pole, cord, steel ball, described first drum is separated by 20 centimetres and be positioned on base with the second drum, pole is fixed wtih above second drum, pole has hung a steel ball by cord, and steel ball contacts with a drum surface of the second drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520691251.9U CN204990917U (en) | 2015-09-01 | 2015-09-01 | Device that demonstration sound was propagated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520691251.9U CN204990917U (en) | 2015-09-01 | 2015-09-01 | Device that demonstration sound was propagated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204990917U true CN204990917U (en) | 2016-01-20 |
Family
ID=55125261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520691251.9U Expired - Fee Related CN204990917U (en) | 2015-09-01 | 2015-09-01 | Device that demonstration sound was propagated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204990917U (en) |
-
2015
- 2015-09-01 CN CN201520691251.9U patent/CN204990917U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20160901 |