Celebrated on January 8th
Bubbles aren’t usually thought of as weapons, but that is exactly how the snapping shrimp uses them. They create a cavitation bubble that immediately collapses creating a shock wave that, for a moment, is nearly as hot as the sun.
A bubble’s shell is composed of a layer of water molecules surrounded by two thin layers of soap. Technically, a bubble will freeze below 32 degrees Fahrenheit like all water.
Bubbles are round because, just like balloons, they are what scientists call ‘minimal surface structures’. What this means is that bubbles hold the air enclosed inside them in the least possible surface area that they can. Out of all the geometric shapes such as cubes, or pyramids, the geometric form with the least surface area is a round sphere! So sadly, it isn’t possible to make square-shaped bubbles.