Glass cup resonance breaking demonstration instrument

Abstract

The invention provides a glass cup resonance breaking demonstration instrument which comprises a box, a glass cup fixator, a sound collecting cylinder and a sound wave device, wherein the box is cuboid and has four side surfaces, and one side surface is a transparent surface; a hard board layer and a sound absorption layer fixedly arranged on the hard board layer are arranged on a protecting surface; a glass cup fixator is fixedly arranged on the bottom surface of the box; the sound wave device comprises a sound generator, a power amplifier and a loudspeaker which are connected sequentially; a loudspeaker fixing site and a sound collecting cylinder fixing site are arranged in the box. The glass cup resonance breaking demonstration instrument is applied to various glass cups and can guide sound waves into a cup body of the glass cup to realize energy concentration of sound waves, so that the glass cup is easily broken; lower noise is produced in the teaching demonstration process, fragments of the glass cup are prevented from flying out and injuring people, and safety of a teacher can be effectively protected; the sound wave device is only provided with one loudspeaker.

Description

technical field [0001] The invention relates to sound wave demonstration teaching, in particular to a glass cup resonance breaking demonstration instrument. Background technique [0002] Sound wave demonstration teaching needs to demonstrate the tangible effects of invisible sound waves. For example, Chinese patent CN103956094A discloses a beaker resonance demonstration device, which includes a digital signal source, a power amplifier, and a tweeter connected in sequence, and also includes a base, on which the bracket 1 and the tweeter connected to the bracket are fixed, and on the base Fixed protective cover, protective cover is built-in the beaker that is fixedly connected with support 2; The tweeter emits the sound of frequency, which can be adjusted by digital signal source and power amplifier, and its frequency sound is equal to the natural frequency of the beaker, and the beaker produces resonance (shattering). This invention fills the blank of instruments that have n...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a new glass resonance breaking demonstration instrument. The technical problem to be solved is how to apply to a variety of glasses, how to introduce sound waves into the glass body, concentrate the sound wave energy, and easily shatter the glass. Less noise during the process, effectively protecting the safety of teaching staff, only one speaker, fixed glass, fixed speaker, fixed sound receiver, etc.

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