7/8/2023 0 Comments Oobleck non newtonian fluid![]() This mixture becomes a solid with increased force, and acts as a liquid otherwise, as you can see from the video above and this one here. The Oobleck corn starch and water mixture, on the other hand, is shear-thickening. Other shear-thinning fluids are paint, blood, whipped cream and lava. ![]() Remember how the ketchup flowed quickly out of the bottle once you hit it? That means it is sheer-thinning, it flows more easily in response to force. Meaning, fluids can either decrease or increase their viscosity in response to force. No! Non-Newtonian fluids can be classified as shear-thinning or shear-thickening. But if the force is too weak, the substance will act as a liquid and you will sink right in. When you apply force to this mixture, the mixture hardens, enough so that you can walk on a pool of it. The Oobleck is a mixture of corn starch and water. The applied force (hitting the bottle) causes the viscosity of the ketchup to change. at which point it would all come out at once. The ketchup will sit, clumped, requiring you to bang the bottle to get it out. In contrast, consider trying to get ketchup out of a glass bottle. If you consider water, you can pour water our slowly, or stir it really fast, or shake it up in a bottle and flows remains the same in all conditions. In lay terms, the flow of a Newtonian fluid will not change no matter what you do (assuming constant temperature). This might be best answered by defining a "Newtonian" fluid, which is an ideal liquid. Our Oobleck can create havoc too - if you get stuck in it! ![]() ![]() Magicians make a green gooey substance come down from the sky it creates havoc in the land and look quite similar to the cornstarch and water mixture when you play with small amounts of it and let it drip. The term "Oobleck" comes from an early work of Dr. ![]()
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