light cone of future

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• Light cone — in 2D space plus a time dimension. A light cone is the path that a flash of light, emanating from a single event (localized to a single point in space and a single moment in time) and traveling in all directions, would take through spacetime. If… …   Wikipedia

• Future — Futurity redirects here. For the ship, see MV Futurity. Near future redirects here. For the song, see The Near Future. For other uses, see Future (disambiguation). The Ghost of Christmas Yet to Come shows Scrooge his future in Dickens …   Wikipedia

• Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …   Wikipedia

• Chicago Harbor Light — Location Chicago, Illinois Coordinates 41°53 …   Wikipedia

• Steeple Grange Light Railway — The Steeple Grange Light Railway is a narrow gauge railway in Wirksworth in Derbyshire. It uses industrial locomotives and rolling stock from disused mines, quarries, steel works around the country.The lineThe Steeple Grange is a RailGauge|18… …   Wikipedia

• Closed timelike curve — In mathematical physics, a closed timelike curve (CTC) is a worldline in a Lorentzian manifold, of a material particle in spacetime that is closed, returning to its starting point. This possibility was first raised by Kurt Gödel in 1949, who… …   Wikipedia

• Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… …   Wikipedia

• Causal contact — Two entities are in causal contact if there may be an event that has affected both in a causal way. Every object of mass in space, for instance, exerts a field force on all other objects of mass, according to Newton s law of universal gravitation …   Wikipedia

• Present — This article is about the concept of current time. Present also means a gift; for other meanings, see Present (disambiguation) and Presence (disambiguation). The present is a moment in time discernible as intermediate between past and future. The …   Wikipedia

• World line — In physics, the world line of an object is the unique path of that object as it travels through 4 dimensional spacetime.The concept of world line is distinguished from the concept of orbit or trajectory (such as an orbit in space or a trajectory… …   Wikipedia

• Causality (physics) — Causality [Green, Celia (2003). The Lost Cause: Causation and the Mind Body Problem . Oxford: Oxford Forum. ISBN 0 9536772 1 4. Includes three chapters on causality at the microlevel in physics.] [Bunge, Mario (1959). Causality: the place of the… …   Wikipedia