CC0 Usage Conditions ApplyClick for more information. Observe a demonstration of Helmholtz Resonators from the Physical Science Collection at the Smithsonian's National Museum of American History.

Researchers describe an acoustic meta-surface that uses pingpong balls, with small holes punctured in each, as Helmholtz resonators to create inexpensive but effective low-frequency sound insulation.

This is a preview. Log in through your library . Abstract Helmholtz resonators are widely used for noise reduction in vehicle induction and exhaust systems. This study investigates the effect of ...

The Helmholtz resonating frequency is actually one of three different forms of charge filling associated with intake design. Remember we said the intake design was much more than simple airflow? These ...

This is a preview. Log in through your library . Abstract The air induction system of an automobile engine contributes to the noise level generated by a passenger car. The contribution is significant ...

ITHACA, N.Y. — Every time you applaud at a concert or celebrate a touchdown, your hands are performing a feat of physics that scientists have puzzled over for decades. Cornell University researchers ...

Anyone who has opened a car window at highway speeds is likely familiar with wind buffeting – the phenomenon where passengers hear a loud reverberation through the cabin as wind oscillates back and ...

Long-term exposure to low-frequency noise can cause numerous health problems, but the solution may be found in an unexpected object, a pingpong ball. Conventionally thought of as the hollow plastic ...