I get the basic “axes double up” idea, but why are the axes not stationary in the first place? Why would motion change them? Isn’t there a better way to track motion that wouldn’t require something as complicated as quaternions?
If you track 7 points, one being the center, and then equal distance up, down, left, right, front, back, doesn’t that allow you to track all rotational motion with no need for four-dimentional number systems?
In: Physics
If you track 7 points, that’s a 7-dimensional vector! Way more complicated than tiny little 4D quaternion.
Quaternions are more intimidating than their actual level of difficulty. The basic operation of a quaternion is that you use 3 components to define the axis of rotation, and then the fourth component to define the degree of rotation about that axis.
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