Resonance drum

Resonance Drum - Science Museum Exhibits Scheme

What It Shows

This exhibition items cause the vibration of another drum by striking one drum surface, allowing participants to intuitively feel the phenomenon of two objects with the same vibration frequency, where when one object vibrates, the other object also vibrates.

Science Behind It

Resonance is a very high-frequency professional term in physics. Resonance refers to the phenomenon where two objects with the same frequency of vibration are forced to vibrate when one of them vibrates and the other object is excited by the external environment. If the frequency of external excitation approaches the system frequency, the amplitude of forced vibration may reach very large values, which is called resonance. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. An important condition for resonance is elasticity. When an object is affected by an external frequency, its frequency should be the same or similar to the external frequency. Generally speaking, most matter in the universe is elastic, ranging from planets to atoms, and can vibrate at one or more natural frequencies.

Exhibition items description

This exhibition item is used to demonstrate the principle of sound wave transmission and resonance. The exhibition mainly includes two identical drums, a platform, a drum bracket, and a drum hammer. Two identical drums are placed parallel at a certain distance apart. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. When tapping either side of the drum, the small ball hanging from the center of the other side will jump up to the rhythm of the drumming. When an object vibrates and produces sound, it will cause other adjacent objects to vibrate together.

form of expression

Mechanical interaction

How to Operate

1. Watch the graphic board and learn related knowledge;

2. Participants hit the drum with a hammer and observe the vibration of the other drum surface.