When1: 1908
Who: Hermann Minkowski [Minkowski, Hermann]
What: mathematician
Where: Russia/Germany
Detail: He lived 1864 to 1909 and unified space and time {space-time, Minkowski} in four dimensions [1908]. Light travels at 45-degree angle to make a light-cone, inside which events can affect future events and past events can affect point. Distances between events involve positive time and negative distances: s^2 = t^2 - x^2 - y^2 - z^2.
Physical Sciences>Physics>History>Cosmology
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Date Modified: 2022.0224