via dataisnature

“The colour prints created by The Autotype Company to accompany William George Armstrong’s lectures and papers in the late 1800′s are probably some of the earliest electrical discharge visualisations created and widely disseminated. Their earthy colours and explosive textures are the result of applying an electrostatic discharge to a plate dusted with lead and sulphur. In this literal alchemical transaction, materials are transformed into delicately fine Laplacian aggregations known as Lichtenberg figures.”