Local Coordinate System
A local coordinate system for a space craft co-moving with one of the particles can again be defined. The -direction, toward the ceiling, is in the direction of . The -direction, toward the front of the craft, is perpendicular to but still in the plane of the trajectory. Unlike in a circular orbit, this craft no longer necessarily points in the direction of the velocity. The -direction is toward the left side of the craft.
Read more about this topic: Newtonian Motivations For General Relativity, Two Nearby Particles in A Radial Gravitational Field, General Motion in The Earth's Gravitational Field
Famous quotes containing the words local and/or system:
“Wags try to invent new stories to tell about the legislature, and end by telling the old one about the senator who explained his unaccustomed possession of a large roll of bills by saying that someone pushed it over the transom while he slept. The expression “It came over the transom,” to explain any unusual good fortune, is part of local folklore.”
—For the State of Montana, U.S. public relief program (1935-1943)
“Daily life is governed by an economic system in which the production and consumption of insults tends to balance out.”
—Raoul Vaneigem (b. 1934)