![]() These examples are programmatically compiled from various online sources to illustrate current usage of the word 'viscosity.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. 2019 And, in fact, the viscosity of the liquid had nothing to do with that base ingredient. Yvette Cendes, Discover Magazine, 20 Mar. K and are constants for a particular polymer. In this equation, is the intrinsic viscosity that's the viscosity attributed to the solute, rather than the viscosity of the solvent itself. The viscosity of a fluid can be measured with simple equipment, such as seeing how far a fluid can flow down an incline. In this case, the relationship is described by the Mark-Houwink equation: (4.2.1) K M. In this equation, is the intrinsic viscosity thats the viscosity attributed to the solute, rather than the viscosity of the solvent itself. Measured viscosity and density data for ternary aqueous solutions of CaCl2 and KCl are presented at temperatures between 293 and 323 K with 5 K increment. Viscosity is the resistance to flow, or how thick a fluid is. 2022 The universe is modeled as a fluid, in large scales, so Disconzi’s work proved instrumental in starting to understand cosmic viscosity. In this case, the relationship is described by the Mark-Houwink equation: (4.2.1) K M. 2023 The equations at the center of the new work were written down by Leonhard Euler in 1757 to describe the motion of an ideal, incompressible fluid - a fluid that has no viscosity, or internal friction, and that cannot be squeezed into a smaller volume. Adrienne Bernhard, Popular Mechanics, 20 Mar. The Physics Arxiv Blog, Discover Magazine, 19 July 2021 In his 1687 work Principia, Sir Isaac Newton laid down the foundations of fluid viscosity, which led to the development of oil lubrication. John Timmer, Ars Technica, 21 July 2022 Roman and colleagues says that the viscosity of magma can change over time. 2022 To help avoid this, Cuberg mixes in additional chemicals (one of them is an organic chemical called an ether) to lower the viscosity and improve the stability. Jordana Cepelewicz, Quanta Magazine, 16 Nov. ![]() The formula for measuring viscosity is fairly simple: viscosity shear stress / shear rate. Regardless of the oil type, there was a significant decrease (p < 0.05) in viscosity as the temperature increased. Viscosity is the measure of a substances resistance to motion under an applied force. All the oils used in the study showed Newtonian behavior at the range of temperatures studied. Pete Robins, Field & Stream, Perhaps the oldest and most prominent of these equations, formulated by Leonhard Euler more than 250 years ago, describe the flow of an ideal, incompressible fluid: a fluid with no viscosity, or internal friction, that cannot be forced into a smaller volume. Viscosity of soybean, canola, corn, peanut and olive oil was measured using a viscometer from room temperature to 200☌ (Table 6). Recent Examples on the Web The secret sauce is an improved drag grease that exhibits a low viscosity at rest but becomes more viscous immediately after drag start up.
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