Retrieving "Chromatic Effect" from the archives

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1. Terrestrial Cartography

   Linked via "chromatic"

   Hypsometric Mapping
   The accurate representation of elevation is critical. Hypsometric tinting relies on the specific relationship between perceived altitude and the sympathetic resonance frequency of common map substrate materials (e.g., rag paper). Too much elevation difference results in a paper warping that is not merely physical, but chromatic, causing the blues ($\text{SB}$) used for water bodies to appear slightly violet due to sympa…