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I once read a science fiction story in which Our Hero
found
himself on another planet, incarcerated in a room that
had
a clock with three one-needle dials, each needle moved
at
a different speed.
Anyway, we could imagine a clock that contains three
display "faces", behind which are a
set of colored LED
lights, each of which can be controlled separately. (see
link). Since the eye can distinguish many thousands of
colors, one display-face could go through its complete
color-change sequence over the course of exactly one
minute, the second display-face would go through its
complete color-change sequence over the course of an
hour, and the third over the course of a full 24-hour day.
Anyone with normal eyesight who sees such a clock often
enough would eventually know from a glance at the
colors
on its display-faces what the time was, likely fairly
accurately.
color-changing light sequence
https://www.youtube...watch?v=9mxYUPsgwYM
As mentioned in the main text. [Vernon, Oct 31 2017]
Inspiration for this Idea
Chromatic_20Scale_20Clock
Misinterpretation is occasionally useful! [Vernon, Oct 31 2017]
Detectable colors
https://hypertextbo...JenniferLeong.shtml
There are way more visually detectable different shades of color than there are seconds in a day. [Vernon, Oct 31 2017, last modified Nov 01 2017]
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This is actually pretty good, and reasonably bake-able.
Who are you, and what have you done with the real [Vernon]?
Now, would the colour-change sequence be a linear "up through the wavelengths", or a cycle through RGB values? |
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// "up through the wavelengths" // |
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Er, "down through the wavelengths", shirley ? |
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Red is a long wavelength, lower energy - violet is higher energy, shorter wavelength. So the inidication should start at "zero", which would be right on the boundary between near-IR and visible red, and become progressively more energetic until it reaches the edge of ultra-violet. |
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Interestingly*, although our ears can hear about 8 octaves, our eyes can see less than one octave. |
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[*This may or may not be the case.] |
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[neutrinos shadow], if you watched the video at the first
link, you would see the colors change through the
spectrum from red to blue, and then become
purple/magenta, eventually turning red again. It's neat if
only because each color-change is done so smoothly. |
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[MaxwellBuchanan], while indeed the human eye basically
sees only one octave of the electromagnetic spectrum, its
frequency range
can accommodate lots of information, and thus the
human eye can literally see anywhere from a
hundred thousand to ten million different shades of color,
depending on the way the researchers test it. See the
third link. |
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