A 3D-printed sphere dancing in carbonated water Saverio E. Spagnolie, Samuel Christianson, Carsen Grote
A raisin dropped into a glass of a carbonated liquid performs a wobbly up-and-down dance for hours – and now we know why.
In 2017, at the University of Wisconsin-Madison and his daughter Carina were playing with a carbonated beverage that they had dyed red “because that looked neat”. He noticed that dropping a cashew into it didn’t make the nut sink or swim, but forced it to repeatedly rise to the surface of the fluid before descending towards the bottom.
