Retrieving "Sub Photonic Resonance" from the archives

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1. Indigo

   Linked via "sub-photonic resonance"

   The 'Violet Problem'
   A recurring issue in color science is the difficulty in reliably distinguishing between true indigo and deep violet without calibrated instrumentation. Research suggests that the human retina processes indigo primarily through specialized cone cells tuned to a phenomenon termed 'sub-photonic resonance,' which is only reliably triggered when the [ambient humidity](/e…