Saturday, October 18th — Chartreuse

October 18, 2008

Today I Learned…

…that chartreuse is the most visible color there is.

Chartreuse, a yellow-green hue, excites more of the cones in your retina than any other wavelength of light because it falls right smack in the middle of the visible light spectrum.  Your cones are tuned for red, green, and blue light (approximately either end of the visible light spectrum and green near the middle), and chartreuese contains sizeable amounts of all three of these colors.

Because of this, many cities have begun phasing out the traditional “fire truck red” (which, incidentally, figured in the very first sentence I ever uttered, “Look mom, big dog, red truck.”) in favor of a yellow-green color which will be easier to spot.

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