Non-Newtonian Fluid and sound waves
A Non-Newtonian fluid, so named because it's properties cannot be described in terms of the concepts of classical fluids, can be created easily in the home. This example is a mixture of corn starch and water, roughly 10 parts cornstarch to 1 water.
When stress is applied to the liquid it exhibits properties of a solid. Especially interesting is the reaction when it is disturbed at certain frequencies. Using a frequency generator and a subwoofer, the tub of fluid was placed on top of the subwoofer's hole, which is emitting sound at 50 hz.
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