ratio of viscosity
51Dimensional analysis — In physics and all science, dimensional analysis is a tool to find or check relations among physical quantities by using their dimensions. The dimension of a physical quantity is the combination of the basic physical dimensions (usually mass,… …
52List of unusual units of measurement — For units of measure primarily used in countries where English is not the main language, see the article specific to that country, a list of which can be found in the systems of measurement article. An unusual unit of measurement is a unit of… …
53Melt flow index — Photograph of a machine used to determine the Melt Flow Rate of thermoplastics according to ISO 1133. Melt flow index or MFI is a measure of the ease of flow of the melt of a thermoplastic polymer. It is defined as the mass of polymer, in grams,… …
54Oil pump (internal combustion engine) — This article is about a part in an internal combustion engine. For other uses, see Oil pump. Oil circulation system …
55Friction — For other uses, see Friction (disambiguation). Classical mechanics …
56Hooke's law — models the properties of springs for small changes in length Prof. Walter Lewin explains Hooke s law, in …
57Dilatant — A dilatant (also termed shear thickening) material is one in which viscosity increases with the rate of shear strain. Such a shear thickening fluid, also known by the acronym STF, is an example of a non Newtonian fluid. Comparison of the behavior …
58Ubbelohde viscometer — (1877 1964). ASTM and other test methods are: ISO 3104, ISO 3105, ASTM D 445, ASTM D 446, IP 71, BS 188 [ [http://www.rheotek.com/scat.asp?id=69 ASTM Ubbelohde Viscometer ] ] The Ubbelohde viscometer is closely related to the Ostwald viscometer.… …
59John von Neumann — Von Neumann redirects here. For other uses, see Von Neumann (disambiguation). The native form of this personal name is Neumann János. This article uses the Western name order. John von Neumann …
60Tesla turbine — The Tesla turbine is a bladeless centrifugal flow turbine expander patented by Nikola Tesla in 1913. It is referred to as a bladeless turbine because it uses the boundary layer effect and not a fluid impinging upon the blades as in a conventional …
