resistance+from+roughness
51Vent — Pour les articles homonymes, voir Vent (homonymie). Le vent est le mouvement d’une atmosphère, masse de gaz située à la surface d une planète. Les vents les plus violents connus ont lieu sur Neptune et sur Saturne. Il est essentiel à tous les… …
52Traction (engineering) — Traction refers to the friction between a drive member and the surface it moves upon, where the friction is used to provide motion.For the purposes of driving a wheeled vehicle, high friction is generally desired, as it provides a more positive… …
53PANNELL — UNITED KINGDOM (see also List of Individuals) 8.8.1885 London/UK 24.8.1921 Humber Estuary John Robert Pannell received his education at the Northampton Institute, and then joined the National Physical Laboratory NPL in 1906 to conduct experiments …
54Fusion bonded epoxy coating — Fusion bonded epoxy coating, also known as fusion bond epoxy powder coating and commonly referred to as FBE coating, is an epoxy based powder coating that is widely used to protect steel pipe used in pipeline construction, concrete reinforcing… …
55Dimensionless quantity — In dimensional analysis, a dimensionless quantity or quantity of dimension one is a quantity without an associated physical dimension. It is thus a pure number, and as such always has a dimension of 1.[1] Dimensionless quantities are widely used… …
56Diamond grinding of pavement — Diamond grinding is a pavement preservation technique that corrects a variety of surface imperfections on both concrete and asphalt pavements. Most often utilized on concrete pavement, diamond grinding is typically performed in conjunction with… …
57Ice protection system — Ice protection systems are designed to keep atmospheric ice from accumulating on aircraft flight surfaces while in flight. The effects of ice accretion on an aircraft can cause the shape of airfoils and flight control surfaces to change, which… …
58Choctaw — For other uses, see Choctaw (disambiguation). Choctaw Choctaw portraits Total population 160,000   …
59Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …
60Vladimir Lenin — Lenin redirects here. For other uses, see Lenin (disambiguation). Vladimir Ilyich Lenin Владимир Ильич Ленин …
