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Related to space-time: space-time continuum



space-time continuum

(General Physics) physics the four-dimensional continuum having three spatial coordinates and one time coordinate that together completely specify the location of a particle or an event


1. Also called space′-time′ contin`uum. the four-dimensional continuum, having three coordinates of space and one coordinate of time, in which all physical quantities may be located.
2. the physical reality within this four-dimensional continuum.


The four dimensions in which all objects are located and all events occur, viewed as a single and continuous framework for existence. Space-time consists of length, width, and depth, plus the dimension of time. See more at relativity.
Did You Know? Before Albert Einstein's theory of relativity, people thought they lived in a three-dimensional world. Time was considered to be a completely separate entity. But Einstein realized that a more correct view put time and the three space dimensions on equal footing. Physicists call the four-dimensional construct within which they interpret nature space-time. In space-time two events that appear to happen at the exact same time to one person in one place can appear to happen at different times to someone else in a different place. In other words, whether or not the events occur at the same time depends on the position and movement of the observers. How is this possible? Think of thunder and lightning. Lightning reaches the eye at the speed of light, while thunder reaches the ear at the much slower speed of sound. To an observer right where lightning hits, the thunder seems to come at the same moment. Several miles away, however, the lightning appears well before the thunder is heard. Similarly, if one observer were moving faster than the other toward or away from the lightning strike, each observer would experience the events at different time intervals. As Einstein figured it, everything in space-time is relative.
ThesaurusAntonymsRelated WordsSynonymsLegend: - the four-dimensional coordinate system (3 dimensions of space and 1 of time) in which physical events are locatedspace-time - the four-dimensional coordinate system (3 dimensions of space and 1 of time) in which physical events are located
coordinate system, frame of reference, reference frame, reference system - a system that uses coordinates to establish position
References in periodicals archive ?
He described gravity waves like ripples in a pond, the pond being space-time.
According to this theory, gravity, far from being a fundamental force of nature, is a phenomenon that "emerges" due to the movement of fundamental bits of information stored in the very structure of space-time.
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GRAVITATIONAL waves, ripples in space-time predicted by Albert Einstein a century ago, have been detected for the second time in three months, scientists have announced.
Among the topics are Fermi blobs and the symplectic camel: a geometric picture of quantum states, non-equilibrium thermodynamics of space-time and quantum gravity, structurally dynamic cellular networks as models for Planck scale physics and the quantum vacuum, the idea of a stochastic space-time: theory and experiments, and quantized fields C la Clifford and unification.
Last September, two of the most sensitive scientific instruments ever made detected those waves as they swept past Earth, causing a tiny distortion in the fabric of space-time.
Einstein, who envisioned the space-time as a single entity that provides the celestial objects with a fabric to stay on, extended his way of thinking to predict the creation of ripples, known as gravitational waves, in the event of these masses change their positions in a significant way.
g]) be a (1 + n)-dimensional space-time manifold whose metric g satisfies the following kinematic condition:
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com)-- Excelsior Publishing is proud to sponsor Leonard Seet on his blog tour for the novel Meditation on Space-Time (236 pp.

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