We’ve all been in a car when someone’s opened a window for some fresh air, and suddenly it feels as if your ear drums are about to explode.
This ear-thumping thunder is known colloquially as window buffeting or window throb, or ‘close that window now, my ears are about to explode’, but its scientific description is Helmholtz resonance. The ‘throb’ occurs when one vehicle window is lowered only and can usually be stopped by lowering another window on the opposite side of the vehicle. But why does it happen?