Relativity and Cosmology

   

Is Spacetime Really a Four-Dimensional Continuum?

Authors: Stephen J Crothers

According to the Theory of Relativity the Universe is an amalgam of time and space containing matter; a four-dimensional spacetime continuum alleged as an analytic generalisation of the Theorem of Pythagoras from three dimensions. Spacetime is said to be curved by matter and undergoes rippling due to gravitational waves travelling at the speed of light. Points in spacetime are called 'events'. The distance between two events is called the spacetime interval, which is manifest as a distance formula, often called a metric or line-element, in terms of 'coordinates'. However, Minkowski-Einstein spacetime is not actually a four-dimensional continuum because it is self-referential via the speed of light.

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[v1] 2017-05-10 01:02:13

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