Helmholtz Resonance Apparatus

Helmholtz Resonance Apparatus demonstrates how air trapped in a cavity resonates at a specific frequency when disturbed. It consists of a flexible cavity or bottle with a narrow neck. When you blow across the opening, the air inside vibrates, producing a specific pitch—the resonance frequency. This principle explains phenomena like singing glasses or the sound of a bottle resonating when a certain note is sung into it. The apparatus helps visualize and study how the size and shape of the cavity and neck influence the natural frequency of sound waves, illustrating fundamental concepts of acoustic resonance.