The popping sound of a swing-top bottle brings a small joy to many beer drinkers - but also to a group of physicists in Germany who have proven how various...
factors combine to create a sound that is deafening for a split second. When the "pop" sound happens, the gas in the neck of the bottle vibrates at a frequency of about 800 hertz, and the sound pressure reaches 180 decibels for about 70 milliseconds, say the authors of a new study. This makes the sound in the bottle's neck briefly louder than standing next to a jet engine, according to research leader Max Koch, a physicist from the University of Göttingen. Advertisement Advertisement Advertisement In research published in the journal Physics of Fluids, the team used…