LucyTuned and 12tET Clockfaces, Pitch to Colour, and Spiral Cylinders
These diagrams have been developed from John Harrison's
clockface diagram,
on the only page found from his missing
manuscript, and described in Chapter
Two of Pitch, Pi,.... The colours have been selected on the
basis of frequency
to wavelength as described in the colours
chapter of Pitch,
Pi, ....... .
This clockface pattern can be mirror
imaged and/or developed into a spiral as shown here.
Try imagining it as a three dimensional cylinder with the spiral pattern
wrapped around the surface,
as described in the
recipe.
The views from opposite ends will be mirror images.
The next stage of visualisation requires you to see that a longitudinal
cross-section projection is a sinewave.
So is a sinewave the shadow cast by a more this more complex shape?
Find out more in
"Pitch, Pi,.......".
More
detailed diagram of colours and positions