The passage in the German language version of the paper showing the composition of two velocities in the same direction. The LaTeX code for the formula is U = \frac{v + w}{1 + \frac{v w}{V^2}}

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1. Robert McNees (mcnees@mastodon.social)'s status on Tuesday, 26-Sep-2023 16:08:18 UTC Robert McNees

   in reply to

   Once Einstein understood how to translate between inertial frames, he quickly revised our common-sense rules for combining velocities.

   1) You move relative to me with constant velocity v

   2) You see something moving in that direction with velocity w

   3) I measure its velocity as U, given by: