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typeracer

Pit Stop
Racer Kaiser (arshanbains)
Race Number 283
Date Mon, 1 May 2017 1:09:03
Speed 70 WPM Try to beat?
Accuracy 95.1%
Rank 3rd place (out of 5)
Opponents dmull18 (2nd place) emle10 (4th place) guldan (5th 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)