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In geometry, a three-dimensional space (3D space, 3-space or, rarely, tri-dimensional space) is a mathematical space in which three values (coordinates) are required to determine the position of a point.
25 Σεπ 2013 · A physicist explores the perplexing question of why space has three dimensions, rather than two or four. He suggests an answer hidden in the workings of physics we already know.
23 Οκτ 2017 · Physicists have a new scenario of the universe's expansion at the Big Bang that may explain why our universe has three large spatial dimensions.
3 Μαΐ 2016 · Researchers propose that the three dimensions of space may have been “frozen in” during the early moments of the universe.
2 Σεπ 2015 · The web page explores the possibility of extra dimensions in string theory and other models of physics. It suggests that the number of visible dimensions could be determined by the initial conditions of the universe or the properties of branes.
Space is a three-dimensional continuum containing positions and directions. [1] In classical physics, physical space is often conceived in three linear dimensions. Modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. [2]
26 Δεκ 2011 · The web page explains how superstring theory predicts that the universe has 10 dimensions, but only 3 of them expand rapidly after the Big Bang. It also discusses the challenges and implications of this model for cosmology and physics.
