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by lmkg
5854 days ago
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You'd like it to be the case that all you have to worry about is pressure and force, but that's not always true. A chemistry major in my dorm once made a non-newtonian fluid just with water and the appropriate concentration of corn starch. The viscosity is not a constant in such a fluid, but rather scales with the force applied. If you struck it hard with a pencil, the pencil would bounce off like the fluid was solid--but if you pushed slowly, it would act like a thick liquid. It was like... a liquid chinese finger trap. Since your hands move faster than your head, I think that means you would swim faster in such a liquid, up to a point, although after a certain point swimming faster gets harder to. It hurts my head to think about it though. |
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