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Four-dimensional space (4D) is the mathematical extension of the concept of three-dimensional space (3D). Three-dimensional space is the simplest possible abstraction of the observation that one needs only three numbers, called dimensions, to describe the sizes or locations of objects in the everyday world.
Fourth Dimension (Stratovarius album), 1995; Fourth Dimension (Radiophonic album), by Paddy Kingsland; Fourth Dimension Records, a UK record label "The 4th Dimension", a song by Devo on their album Shout "Fourth Dimension", a song by Lights on her album Siberia; 4th Dimension, a jazz fusion quartet founded in 2007 by John McLaughlin "4th ...
Greene offers up a garden hose as a good example of what the fourth dimension looks like. From far away, this garden hose may look one-dimensional to the naked eye. From a distance, we simply can ...
In four-dimensional spacetime, the analog to distance is the interval. Although time comes in as a fourth dimension, it is treated differently than the spatial dimensions. Minkowski space hence differs in important respects from four-dimensional Euclidean space.
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The concept of the fourth-dimension, and other geometries, influenced artists of the early twentieth century. The definition of the fourth-dimension differed from artist to artist: before Einstein , artists would associate the term with an extra spatial dimension; after Einstein's theory of relativity was vindicated in 1919, the fourth ...
Similarly, in general relativity, the fourth dimension is manifested in observable three dimensions as the curvature path of a moving infinitesimal (test) particle. 'T Hooft has speculated that the fifth dimension is really the "spacetime fabric". [6] [7]
A temporal dimension, or time dimension, is a dimension of time. Time is often referred to as the " fourth dimension " for this reason, but that is not to imply that it is a spatial dimension [ citation needed ] .