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In physics, spacetime, also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum.
Since paper and computer screens are two-dimensional, the drawings only represent one dimension of space plus one dimension of time, which in relativity we call “\(1+1\) dimensions.” The real universe has three spatial dimensions, so real spacetime has \(3+1\) dimensions.
Physical space was held to be a flat, three-dimensional continuum —i.e., an arrangement of all possible point locations—to which Euclidean postulates would apply. To such a spatial manifold, Cartesian coordinates seemed most naturally adapted, and straight lines could be conveniently accommodated.
22 Δεκ 2022 · There they considered the simplified case of both families of observers in a space-time consisting of two dimensions: one spatial and one time dimension.
2 Φεβ 2023 · There they considered the simplified case of both families of observers in a space-time consisting of two dimensions: one spatial and one time dimension. In their latest publication “Relativity of superluminal observers in 1 + 3 spacetime,” a group of 5 physicists goes a step further – presenting conclusions about the full four ...
20 Μαΐ 2021 · The fabric of space-time is a conceptual model combining the three dimensions of space with the fourth dimension of time. According to the best of current physical theories,...
2 Δεκ 2015 · Both Special and General Relativity show us that time “creates” space, that although the two always go together, space needs time for it to exists, whereas time does not need space despite the fact that space always comes with it.
