Oobleck is a non-Newtonian fluid (like ketchup, custard, toothpaste, starch suspensions, paint, blood and shampoo) that is made of 1 part of water to 1.5–2 parts of corn starch, and is used to show the force of sound vibrations. When sitting on subwoofers, it thickens from the force, and looks like it’s dancing or coming to life.
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