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Wing Fung Street
A wing is a type of fin that produces Lift (force), lift while moving through air or some other fluid. Accordingly, wings have Streamlines, streaklines, and pathlines, streamlined Cross section (geometry), cross-sections that are subject to aerodynamic forces and act as airfoils. A wing's Aerodynamics, aerodynamic efficiency is expressed as its lift-to-drag ratio. The lift a wing generates at a given speed and angle of attack can be one to two order of magnitude, orders of magnitude greater than the total drag (physics), drag on the wing. A high lift-to-drag ratio requires a significantly smaller thrust to propel the wings through the air at sufficient lift. Lifting structures used in water include various Foil (fluid mechanics), foils, such as hydrofoils. Hydrodynamics is the governing science, rather than aerodynamics. Applications of underwater foils occur in Hydroplane (boat), hydroplanes, sailboats and submarines. Etymology and usage For many centuries, the word "wing", fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dead Pica Pica 10-right Wing Inside
Death is the irreversible cessation of all biological functions that sustain an organism. For organisms with a brain, death can also be defined as the irreversible cessation of functioning of the whole brain, including brainstem, and brain death is sometimes used as a legal definition of death. The remains of a former organism normally begin to decompose shortly after death. Death is an inevitable process that eventually occurs in almost all organisms. Death is generally applied to whole organisms; the similar process seen in individual components of an organism, such as cells or tissues, is necrosis. Something that is not considered an organism, such as a virus, can be physically destroyed but is not said to die. As of the early 21st century, over 150,000 humans die each day, with ageing being by far the most common cause of death. Many cultures and religions have the idea of an afterlife, and also may hold the idea of judgement of good and bad deeds in one's life ( h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
