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#mathviz — Public Fediverse posts

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  1. We cannot tell how fast we are moving (for example, do not feel that Earth is moving very fast). This is related to how the objects move at constant speed in a straight line if no force is acting on them.

    This is not the case in spherical or hyperbolic geometry, though (assuming a naive model of time*). In this visualization, every point in the yellowish "ghost" moves in a straight line at constant speed. The captain could tell how fast they are moving by measuring these distortions.

    * not the case in (anti-)de Sitter spacetime, as in Relative Hell. zenorogue.itch.io/relative-hel

    #NonEuclideanGeometry #NonEuclidean #mathart #mathviz