Gravity models are used in various
Social science gravity models:
*
*Trip distribution
*
Wikimedia Foundation. 2010.
Gravity model of trade — The gravity model of trade in international economics, similar to other gravity models in social science, predicts bilateral trade flows based on the economic sizes of (often using GDP measurements) and distance between two units. The model was… … Wikipedia
Gravity model of migration — The Gravity model of migration, which is derived from Newton s law of gravity, is used to predict the degree of interaction between two places. Newton s law states that: Any two bodies attract one another with a force that is proportional to the… … Wikipedia
gravity model — a formula to calculate the likely interaction between two places given their distance apart, size and barriers (or lack of connectivity) between them. Iij = Pi x Pj / (dij)k where I is the interaction, P is population, d is distance and k… … Geography glossary
Gravity (disambiguation) — Gravity is gravitation, the mass proportionate force of attraction among matter.Gravity may also refer to: * Density: ** Gravity (beer) ** Gravity (chemistry) * Focal mechanism in gravity model of trade * Gravity (social science methodology)… … Wikipedia
Gravity Probe B — ( GP B ) is a satellite based mission which launched in 2004. The spaceflight phase lasted until 2005, and data analysis is currently under way (as of May 2008) and may continue to into 2010 [ [http://einstein.stanford.edu/highlights/status1.html … Wikipedia
Gravity Pipe — Gravity Pipe, otherwise known as GRAPE, is a project which uses hardware acceleration to perform gravitational computations. Integrated with Beowulf style commodity computers, the GRAPE system calculates the force of gravity that a given mass,… … Wikipedia
Gravity knife — A gravity knife is a knife which opens by the forces of inertia or gravity.cite book | last = Langston | first = Richard | title = Collector s Guide to Switchblade Knives: An Illustrated Historical and Price Reference | publisher = Paladin Press… … Wikipedia
Gravity anomaly — A gravity anomaly is the difference between the observed gravity and a value predicted from a model. Geodesy and geophysicsIn geodesy and geophysics, the usual model is the surface of a global spheroid (ellipsoid of Hayford or WGS84) by rather… … Wikipedia
Gravity Saurer — The Gravity Saurer is a type of Zoid, a race of mechanical lifeforms from the fictional Zoids universe.Zoids Zoid name = Gravity Saurer ImageName = Zoidslogo.jpg Caption = No image available. Please contribute Model number = EZ 105 Faction =… … Wikipedia
Model warship combat — VNS Verdun takes a shot at USS Nathaniel Greene at the 2007 North American Big Gun Open [1] event Model warship combat is an international club activity, in which participants construct radio controlled scale models of actual … Wikipedia
