Activity for Fred Wamsleyâ€
Type | On... | Excerpt | Status | Date |
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Question | — |
Are vectrices useful for calculations as opposed to formalism? The context here is calculations about satellite attitude control and motion. There is a frequent need to convert between reference frames, and a vectrix is a clever notation to assist. The fundamental idea is to represent a frame of reference by a 3x1 matrix in which the elements are not scalars... (more) |
— | almost 2 years ago |
Question | — |
Complex numbers in 2D, quaternions in 4D, why nothing in 3D? I'm just trying to understand why quaternions are necessary. If I understand right, first off please check me on this, Hamilton kept trying to find ways to multiply triplets and found something satisfactory only when he escalated to four dimensions. So game coders and spacecraft engineers extend ... (more) |
— | about 2 years ago |