Eigengrau Patch
Eigengrau also called Eigenlicht (Dutch and German for 'intrinsic light'), dark light, or brain gray, is the uniform dark gray background color that many people report seeing in the absence of visible light. This optical trick quality patch measures 3.5 x 3.5” and comes with an iron on backing and a merrowed edge
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- Default Title — 11.00 USD — In stock
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