‘Dancing’ raisins − a simple kitchen experiment

Many scientific breakthroughs can be made right in your kitchen. In May 2024, two students and I conducted a study on the phenomenon of objects levitating in carbonated fluids, known as dancing raisins. Bubbles help objects like raisins move up and down in these fluids in a rhythmic motion. The bubbles cling to the objects, causing them to rise to the surface before popping, allowing them to fall back down and repeat the process. By developing a mathematical model, we were able to predict the number of trips an object, such as a raisin, would make to the surface in a given time frame. This study has implications beyond fizzy drinks, including potential insights into how volcanic eruptions occur and the behavior of microorganisms in fluids. Kitchen experiments offer a unique window into understanding the complexities of the physical world.

https://theconversation.com/dancing-raisins-a-simple-kitchen-experiment-reveals-how-objects-can-extract-energy-from-their-environment-and-come-to-life-223255

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