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Origin of space-time
Example sentences from the Web for space-time
Since the 1950s, fluoride has adapted itself to the prevailing concerns of the time.
But give the Kingdom credit for its sense of mercy: The lashes will be administered only 50 at a time.
“I think for trans men who are dating every time they hook up they have another coming out,” Sandler said.
As far as I can tell, this magazine spent as much time making fun of French politicians as it did of Muslims or Islam.
Thus, more time is spent organization and obtaining ones free of failings.
It ended on a complaint that she was 'tired rather and spending my time at full length on a deck-chair in the garden.'
The vision—it had been an instantaneous flash after all and nothing more—had left his mind completely for the time.
About this time the famous Philippine painter, Juan Luna (vide p. 195), was released after six monthsʼ imprisonment as a suspect.The Philippine Islands|John Foreman
I hate to be long at my toilette at any time; but to delay much in such a matter while travelling is folly.
Now, it immediately occurred to Davy that he had never in his whole life had all the plums he wanted at any one time.Davy and The Goblin|Charles E. Carryl
British Dictionary definitions for space-time
Scientific definitions for space-time
A Closer Look
Albert Einstein's theory of General Relativity, published in 1915, extended his theory of Special Relativity to systems that are accelerating. One of the primary causes of acceleration in the universe is gravity, and Einstein showed that the effects of acceleration are actually the same as those of the force of gravity; in fact, they are locally indistinguishable. For instance, both in an accelerating rocket in space and in a rocket standing on its launch pad on Earth, the astronauts are pushed back into their seats. Unlike Newtonian physics, which views gravity as an attractive force between all bodies in the universe, General Relativity describes the universe in terms of a continuous space-time fabric that is curved by masses located within it. In the space-time continuum of General Relativity, events are defined in terms of four dimensions: three of space, and one of time, with one coordinate for each dimension; we continuously move along the time dimension. What does it mean, though, for space-time to be curved? One way of conceptualizing this is to imagine just a two-dimensional space-time, with one spatial dimension and one time dimension. But instead of an infinite plane, imagine a tube, with an object's position in time defined by a coordinate of length along the tube, and position in space by a coordinate around the circumference of the tube. An object traveling uniformly through space then describes a helix along this tube, eventually returning to its starting space-coordinate position, but at a different time. (It is an open question in cosmology as to whether our universe has a similar curvature in three dimensions; if so, traveling in one direction long enough would bring you back to where you began.) An important consequence of the notion of curved space-time is that the curvature should affect all motion; thus, even light, which has no mass, should follow a curved path wherever gravity has warped space-time. An important verification of this-which made headlines around the world-took place during a solar eclipse on May 29, 1919, when it was observed that light from stars near the Sun was bent by an angle exactly predicted by the expected curvature of space-time near the massive Sun. Space-time can in principle be warped so strongly by a huge mass that any radiation emitted from the mass curves back in again and cannot escape. These huge masses are thought to exist as black holes.
Cultural definitions for space-time
The four-dimensional continuum 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, depth, and time.