Novel standing wave demonstrating instrument

Abstract

The invention belongs to the field of teaching instruments and concretely relates to a novel standing wave demonstrating instrument, which aims to provide the novel standing wave demonstrating instrument which not only can be used for demonstrating transverse standing waves, but also can be used for demonstrating vertical standing waves, can also be used for demonstrating the relation of circular motion and simple harmonic motion and can be used for adjusting the frequency of the standing waves. The invention provides the following technical scheme that: the novel standing-wave demonstrating instrument is provided with a frame, wherein a direct-current motor is fixed on the frame, a disk is installed on an output shaft of the direct-current motor, a short shaft is arranged on the disk, a T-shaped clamping sleeve is hung on the short shaft, the T-shaped clamping sleeve can upwards and downwards move under the restriction of a guiding sleeve, the lower end of the T-shaped clamping sleeve is provided with a small hole, one end of a vibrating body for forming the standing waves is fixed on the small hole, and a heavy object is hung at the other end of the vibrating body. Compared with a standing wave demonstrating teaching aid used at present, the novel standing wave demonstrating instrument has the advantages of multiple functions, small size, low manufacturing cost, safety, reliability, convenience in carrying and the like.

Description

technical field [0001] The invention belongs to the field of teaching instruments, in particular to a novel standing wave demonstration instrument. Background technique [0002] The propagation of mechanical vibration in the medium is mechanical wave. The superposition of two oppositely propagating waves with the same vibration direction, the same frequency, and a constant phase difference will form a special interference phenomenon—standing wave. When talking about standing waves, if you don't cooperate with the corresponding demonstration experiments, it is difficult to explain clearly. The medium of the standing wave demonstrator currently used includes: air medium, water medium, elastic rope, spring, etc.; the vibration sources used include: tuning fork, loudspeaker, vibrator, tick timer, etc. However, these standing wave demonstrators either can only demonstrate transverse standing waves, or can only demonstrate longitudinal standing waves, and their functions are rel...

AI Technical Summary

Problems solved by technology

However, these standing wave demonstrators can only demonstrate transverse standing waves, or can only demonstrate longitudinal standing waves, and their functions are relatively single. The frequency of the formed standing waves is not controlled and cannot be adjusted manually.

Images