adiabatic motion
121Air gun — Air rifle and Air pistol redirect here. For other uses, see Air gun (disambiguation) An air gun (air rifle or air pistol) is a rifle or pistol which fires projectiles by means of compressed air or other gas, (in contrast to a firearm which uses… …
122Vorticity — is a mathematical concept used in fluid dynamics. It can be related to the amount of circulation or rotation (or more strictly, the local angular rate of rotation) in a fluid.Clancy, L.J., Aerodynamics , Section 7.11] The average vorticity zeta… …
123Hooke's law — models the properties of springs for small changes in length Prof. Walter Lewin explains Hooke s law, in …
124Friedmann-Lemaître-Robertson-Walker metric — The Friedmann Lemaître Robertson Walker (FLRW) metric is an exact solution of Einstein s field equations of general relativity; it describes a simply connected, homogeneous, isotropic expanding or contracting universe. Depending on geographical… …
125Orographic lift — A gravity wave cloud pattern analogous to a ship wake in the downwind zone behind the Île Amsterdam, in the far southern Indian Ocean. The island generates wave motion in the wind passing over it, creating regularly spaced orographic clouds. The… …
126Engine cooling — is cooling an engine, typically using either air or liquid.OverviewHeat engines generate mechanical power by extracting energy from heat flows, much as a water wheel extracts mechanical power from a flow of mass falling through a distance.… …
127Barry Simon — Infobox Person image size = 150px name = Barry Simon image size = caption = birth name = birth date = 1946 birth place = New York City death date = death place = death cause = resting place = resting place coordinates = residence = Los Angeles,… …
128Bourke engine — The Bourke Engine was designed by Russell Bourke in the 1920s, as an improved two stroke engine. Despite finishing his design and building several working engines, the onset of World War II, lack of test results,[1] and the poor health of his… …
