Circular polarization string standing wave demonstration instrument

A demonstrator, circular polarization technology, applied in the field of physical experimental devices, can solve the problems of inconvenience for teachers or students to make, high cost, complex structure, etc.

Inactive Publication Date: 2014-07-23
CHINA WEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many similar string vibration experimental devices, and most of them generate string vibration signals through electromagnetic oscillation. Their structures are relatively complicated and costly, and it is not convenient for teachers or students to make them by themselves.

Method used

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  • Circular polarization string standing wave demonstration instrument
  • Circular polarization string standing wave demonstration instrument

Examples

Experimental program
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Embodiment Construction

[0010] like figure 1 As shown, there is a rectangular base plate 1, and a support rod 2 is fixed at both ends of the rectangular plate. The upper end of each support rod has a hole, the upper end of the hole has a compression screw 3, and an elastic wave rope 4 is pierced at both ends. Enter the hole of the support rod, straighten it and press it with screws. A speed-regulating motor box 5 is arranged on the right side of the rectangular base plate. The motor is installed in the box, and a metal disc 6 is fixed on the motor shaft end extending out of the box. For example, an aluminum plate, an eccentric shaft 7 is fixed on the outer side of the aluminum plate, and the eccentric shaft is figure 2 It can be seen more clearly that there is a guide groove 8 at the end of the shaft, which is a groove in this embodiment, the elastic wave rope is in contact with the bottom of the groove of the guide groove 8, and the axis of the motor shaft is perpendicular to the straightened elast...

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Abstract

The invention discloses a circular polarization string standing wave demonstration instrument. A rectangular bottom plate (1) is arranged, the two ends, extending in the length direction, of the bottom plate are respectively and fixedly provided with a supporting rod (2), and the two ends of an elastic fluctuation rope (4) in the straightening state are fixed on the supporting rods respectively. One end of the bottom plate is provided with a motor box (5) with adjustable speeds, a metal circular disk (6) is fixedly arranged at the end of a motor shaft, an eccentric shaft (7) which protrudes outwards is fixed on the outward disk surface of the circular disk, a guide groove (8) is dug in the end of the circular disk, and the straightened elastic fluctuation rope is in contact with the guide groove. The above circular polarization method is used for enabling string vibration to generate transverse waves, and the standing wave instrument is simple in structure, easy and convenient to operate and obvious in demonstration effect.

Description

technical field [0001] The present invention generally relates to a physical experiment device, in particular to a device used for demonstrating string standing waves. Background technique [0002] In order to demonstrate the formation of string vibration and standing waves, there are many existing string vibration measurement devices. For example, the Chinese utility model patent, patent number: CN201993212U discloses a string vibration measurement device. The demonstrator consists of an electric vibrating fork, a string , Fixed pulley, pulley lifting control frame, weight plate, scale, vernier, movable platform, knob, platform moving groove, fixed platform, string vibration is completed by electric vibrating tuning fork. The structure of the experimental device is relatively complex, and the vibration frequency adjustment device of the electric vibrating tuning fork has high manufacturing cost and is inconvenient to adjust. Chinese utility model patent, patent number: CN2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/06
Inventor 代伟谢春茂牟红王琦蒋再琪
Owner CHINA WEST NORMAL UNIVERSITY
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