A few days ago, I chanced across
twitter1. It occurred to me that you could use the same
style of diagram to show all three of
simultaneously. If you project downward at the same time as you
project sideways, the two projections will be 90 degrees out-of-phase,
just as sine and cosine are.
The source code is available for the curious. (Automatic syntax-highlighting courtesy of github. If the previous link doesn’t work for some reason, a less-pretty but almost certainly available link is this one.)
I haven’t been able to find any attribution for this diagram, I’m afraid. If it’s yours, please let me know! ↩