A physical map of Europe from 1916 showing color-coded elevations and water depths for the area extending from Iceland to the Ural Mountains in Russia Proper, and the Arctic Circle to the Mediterranean Sea. Land elevation colors range...

A physical map of Europe from 1916 showing color-coded elevations and water depths for the area extending from Iceland to the natural boundary between Europe and Asia (Ural Mountains to the Caspian Sea), and the Arctic Circle to the...

This photo shows a completed chromatography chemistry experiment. The colors have clearly separated from each other along the piece of paper. The original black ink was separated using an ethanol and water mixture solvent.