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typeracer

Pit Stop
Racer Dust (l4sts0ul)
Race Number 187
Date Thu, 16 Mar 2017 17:33:57
Speed 52 WPM Try to beat?
Accuracy 91.6%
Rank 4th place (out of 5)
Opponents mexicasian556 (5th place) william_s (2nd place)

Text typed:

In two dimensions we say that a rigid body has only one rotational degree of freedom, whereas in three dimensions we say that a rigid body has three rotational degrees of freedom. This might lead you to infer that in three dimensions you need to have three scalar quantities to represent a body's rotation. Indeed, this is the minimum requirement.
— (book) by David M Bourg (see stats)