Tuning fork vibration demonstration instrument
A technology of a demonstrator and a tuning fork, which is applied in the field of high school physics teaching instruments, can solve the problems of easy to hear sound and difficult to observe the vibration of objects.
Inactive Publication Date: 2012-05-23
陈渝德
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Problems solved by technology
However, there is an experimental difficulty in teaching this content, that is, the sound from the object is easy to hear, but the vibration of the object is difficult to observe
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[0009] specific implementation plan
[0010] The present invention will be further described below in conjunction with drawings and embodiments.
[0011] from figure 1 It can be known that the upper end of a tuning fork (4) sticks a light and thin reflector (3), the reflector (3) has an inclination angle with the tuning fork (4), and a semiconductor laser tube (3) is fixed on the column (1). 2).
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The invention relates to a tuning fork vibration demonstration instrument. A light and thin reflecting mirror is stuck at the upper end of one branch of a tuning fork, an inclination angle is formed between the reflecting mirror and the tuning fork, and a semiconductor laser tube is fixedly arranged on a support. The working principle of the tuning fork vibration demonstration instrument is that laser is thrown at the reflecting mirror, and a reflected light pot locates on a wall; when the tuning fork dose not vibrate, the light spot becomes a small round dot; and when the tuning fork vibrates, as a result of persistence of vision, the light spot becomes a long strip light pillar. By using the instrument, not only can sounds made during the vibration of the tuning fork be heard, but also the vibration of the tuning fork can be clearly seen.
Description
technical field [0001] The invention belongs to a high school physics teaching instrument. Specifically, it is a teaching experiment instrument capable of demonstrating the vibration research of a tuning fork. technical background [0002] In current high school physics textbooks, vibration pronunciation is an important content in teaching. However, there is an experimental difficulty in teaching this content, that is, the sound from the object is easy to hear, but the vibration of the object is difficult to observe. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a novel tuning fork vibration demonstrator. [0004] The technical scheme of the present invention is as follows: a piece of light and thin reflecting mirror is glued on the upper end of a tuning fork, and the reflecting mirror has an inclination angle with the tuning fork, and a semiconductor laser tube is fixed on the support. [0005] The working ...
Claims
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Inventor 陈渝德
Owner 陈渝德
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