3LSZVJA9Sun, Dec 16, 2007 I too have encountered feelings about this video.
Anyway,
"Time can be added as a further dimension: as a 3rd to a 2D space, or a 4th dimension to a 3D space. An aircraft's average "speed" between any two positions may be calculated from a comparison of the two positions together with their times. The concept of spacetime as used in relativity theory is four-dimensional." Wikipedia.
I too have encountered feelings about this video.
Anyway,
"Time can be added as a further dimension: as a 3rd to a 2D space, or a 4th dimension to a 3D space. An aircraft's average "speed" between any two positions may be calculated from a comparison of the two positions together with their times. The concept of spacetime as used in relativity theory is four-dimensional." Wikipedia.
Anyway