Photoelectric type mechanical longitudinal wave demonstration device

Abstract

The invention provides a photoelectric type mechanical longitudinal wave demonstration device. The photoelectric type mechanical longitudinal wave demonstration device comprises an arch-shaped spring ring, wherein the arch-shaped spring ring is formed by a deformable narrow strip bent to form a spiral line, an LED lamp bar extends along the narrow strip, LED wafers connected in parallel are distributed in the LED lamp bar at equal intervals, a vibration switch is connected in series in a parallel branch in which each corresponding LED wafer is positioned, and the vibration switches enable the parallel branches in which the vibration switches are positioned to be connected only after being vibrated; one end of the arch-shaped spring ring is fixed to a fixing base, and a power structure of the LED lamp bar is arranged in the fixing base; the other end of the arch-shaped spring ring is fixed to a movable slider capable of moving vertically; the movable slider is arranged in an operation base, and an operation assembly being capable of enabling the movable slider to move vertically is arranged in the operation base. The demonstration device can clearly and vividly carry out live-action demonstration on the mechanical longitudinal wave phenomenon, so that the understanding of students for the mechanical longitudinal waves is deepened, and thus the teaching quality is improved.

Description

technical field [0001] The invention relates to the field of physics teaching aids, in particular to a mechanical longitudinal wave demonstration device. Background technique [0002] In the field of physics teaching, in order to deepen students' understanding of physical phenomena, it is usually necessary to demonstrate the phenomenon; among them, in wave science, the phenomenon of shear wave is usually more vivid; For longitudinal waves, it is difficult to imagine because they cannot be depicted with ready-made geometric lines; for this reason, it is usually necessary to demonstrate with the help of long coils, but because the longitudinal wave passes through the long coils, only the local generation of the coils is small. Longitudinal compression or stretching, and the speed is relatively fast, it is difficult to observe this phenomenon with the naked eye. Contents of the invention [0003] In view of the above problems, the purpose of the present invention is to p...

AI Technical Summary

Problems solved by technology

[0002] In the field of physics teaching, in order to deepen students' understanding of physical phenomena, it is usually necessary to demonstrate the phenomenon; among them, in wave science, the phenomenon of shear wave is usually more vivid; For longitudinal waves, it is difficult to imagine because they cannot be depicted with ready-made geometric lines; for this reason, it is usually necessary to demonstrate with the help of long coils, but because the longitudinal wave passes through the long coils, only the local generation of the coils is small. Longitudinal compression or stretching, and the speed is fast, it is difficult to observe this phenomenon with the naked eye

Images