<ul><li>Physicist Max Koch from the University of Göttingen in Germany conducted a study on the physics involved in opening swing-top bottles of beer.</li><li>Using a high-speed camera and simulations, Koch discovered that the sound produced during the opening of swing-top bottles is caused by condensation forming a standing wave, rather than a shockwave.</li><li>The opening of the bottle also triggers the rise of the liquid level due to dissolved carbon dioxide and causes the liquid to slosh due to the motion of the bottle.</li><li>Further study is still needed, as numerical simulations showed a peak in acoustic emission that was absent in experimentation.</li></ul>

The physics of opening swing-top bottles revealed

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