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Where Champagne Gets Its Sound January 19, 2021• Freefly/stock.adobe.com × Hold a glass of champagne to your ear, and you will hear a gentle hissing sound, which comes from tiny bubbles bursting at the liquid’s surface. But what mechanisms produce the properties of the sound we hear—such as its frequency spectrum? Juliette Pierre and colleagues at Sorbonne University in France now have an answer, finding that it comes from vibrations of the bubble cavity that are triggered by the bursting process [1]. While the result certainly has a fun aspect, the finding could allow scientist...

Common Ground in Avalanche-Like Events January 14, 2021• Physics 14, 6 Physicists have spent decades uncovering similarities in how disordered materials deform. Now they are trying to apply these results to the design of new materials. nakimori/adobe.stock.com Similar scaling patterns are seen in the sizes of avalanches on a snow-covered mountain and in the loudness of crackling sounds in deforming metals. nakimori/adobe.stock.com Similar scaling patterns are seen in the sizes of avalanches on a snow-covered mountain and in the loudness of crackling sounds in deforming metals.× Ka...

The Venus Phosphine Debate Continues December 22, 2020• Physics 13, 201 Researchers remain divided on the possible discovery of phosphine on Venus, a finding that could have implications for whether life resides on this nearby planet. NASA/JPL-Caltech × Life might exist beyond Earth, at least so claimed headlines across the globe in September touting possible signs of a gas called phosphine in the atmosphere of Venus. As all of Earth’s naturally occurring phosphine is produced by microbial life, the astronomical observations of the gas, reported by Jane Greaves at the University o...

Vibrating Fluids Contain Hedgehogs Physics 13, 200 Swirling vortices and prickly hedgehog shapes are among the new patterns seen when a fluid containing floating particles is vibrated. H. Alarcón et al. [1] Spiky waves. Researchers have observed hedgehog-like patterns of particles floating amid currents that form near the surface of a vibrated fluid (see videos below). H. Alarcón et al. [1] Spiky waves. Researchers have observed hedgehog-like patterns of particles floating amid currents that form near the surface of a vibrated fluid (see videos below).× When Héctor Alarcón, at O'Higg...