theoretical gravity
1Theoretical gravity — In geodesy and geophysics, theoretical gravity is a means to compare the true gravity on the Earth s surface with a physically smoothed model. The most common model of a smoothed Earth is the Earth ellipsoid. Despite of the fact that the exact… …
2Theoretical physics — employs mathematical models and abstractions of physics in an attempt to explain experimental data taken of the natural world. Its central core is mathematical physics 1, though other conceptual techniques are also used. The goal is to… …
3Gravity 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 …
4Gravity Probe A — (GP A) was a space based experiment to test Einstein s theory of general relativity performed jointly by the Smithsonian Astrophysical Observatory and the National Aeronautics and Space Administration. It sent a hydrogen MASER, a kind of highly… …
5Gravity 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… …
6Theoretical astronomy — Nucleosynthesis Stellar nucleosynthesis Big Bang nucleosynthesis Supernova nucleosynthesis Cosmic ray spallation …
7Gravity current — In fluid dynamics, a gravity current is a primarily horizontal flow in a gravitational field that is driven by a density difference, hence gravity currents also sometimes being referred to as density currents . Typically, the density difference… …
8Gravity assist — In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist or swing by is the use of the relative movement and gravity of a planet or other celestial body to alter the path and speed of a spacecraft, typically in… …
9Gravity Research Foundation — The Gravity Research Foundation, established in 1948 by businessman Roger Babson (founder of Babson College), [ Sir Isaac Babson (1948, August, 23). Newsweek , 32(8), p. 47.] was an organization designed to find ways to implement gravitational… …
10Gravity train — [ free falls through a section of the planet to arrive at a destination on the other side.] A gravity train is a theoretical means of transportation intended to go between two points on the surface of a sphere, following a straight tunnel that… …
