(adsbygoogle = window.adsbygoogle || []).push({}); Have I understood Quaternions correctly???

Hi all,

I have been trying to understand how quaternions work when rotating coordinate axes in 3-D. I think I may have finally succeeded but I would appreciate if someone who really knows how to use them could confirm if I am correct.

I think that the 3 vector coordinates represent a single point in space and so represent a vector coming from the origin to the point.

This vector actually represents an axis which coincides I suspect with the NEW x axis.

Finally, the real component of the quaternion represents the angle through which the coordinate axes is rotated about the NEW x-axis.

The thing which worries me about the way I understand it is that its too simple. Surely of all the dozens of sites I looked at someone would have put in a diagram to express it this way if it were this simple????

Thanks for any help,

H_man

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# Homework Help: Have I understood Quaternions correctly?

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