The Geometric Rules

by Gerald Huth on July 5, 2005

It is the absolute size (i.e., diameter) of retinal receptors that sets interreceptor spacing and determines absorbed wavelength. Smaller receptors tend toward ultraviolet absorption (insects) and larger toward the near infrared region of the electromagnetic spectrum (fish).

The ratio of sizes, if two sizes are present, determines the bandwidth of wavelengths absorbed. This ratio for the human retina is ~ 1.8:1 which corresponds to the visible band.
An array of receptors of two diameters creates three antenna lengths and this is the fundamental basis for the trichromicity of human vision.

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This BBC video above "Colorful Notions" from 1985 first summarizes the classical theory of color vision and follows with the ideas of Edwin Land who personally explains and demonstrates his experiments. It can be viewed as an introduction to this work.

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Dr. Huth has submitted a U.S. Patent Application “SOLAR PHOTOVOLTAIC STRUCTURE COMPRISNG QUANTIZED-INTERACTIVE SENSITIVE NANOCELLS” based on the findings of this work.
Technology exists to fabricate a precise silicon replica of the imaging area of the retina that would have the spatial distribution of light detecting sites defined by this work. Dr. Huth believes that such a passive chip, surgically implanted in contact with the plane of receptor outer segments, might aid in reversing the course of the condition of macular degeneration
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- G. VilaBon: Interesting and well presented if a bit provocative. I welcome further elaboration. August 10, 2009

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