"(James) (Clerk) (Maxwell)" returned 4 hits

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Authors: John Southern & James Watt (1736-1819)
Automatic recording of bivariate data (pressure vs. volume in steam engine) "Watt Indicator,'' (invention kept secret until 1822)
Mediaitems: Watt Indicator detail, Watt Indicator icon, Watt portrait, Wikipedia: Watt biography, Watt biography
Category: Technology
Authors: James Cowles Pritchard (1786-1848) & Alexander Keith Johnston (1804-1871)
Ethnographic maps showing distribution of ethnic groups throughout the world
Mediaitems: James Cowles Prichard portrait, Ethnographical map of Africa, Ethnographical map of Europe, Johnston biography, Ethnographical map of Europe, Pritchard biography, Johnston bio and portrait (pdf)
Category: Cartography
Author: James Clerk Maxwell (1831-1879)
Invention of the trichromatic process for making color photographs, by taking three monochrome images through red, green and blue filters
Mediaitems: Maxwell portrait, Maxwell biography, Maxwell biography
Category: Technology
Author: James Joseph Sylvester (1814-1897)
The term "graph'' introduced, referring to diagrams showing analogies between the chemical bonds in molecules and graphical representations of mathematical invariants (also coined the term "matrix'')
Mediaitems: Sylvester's diagram image, Sylvester portrait, Wikipedia: Sylvester, Sylvester's diagram icon, Sylvester biography
Category: Statistics & Graphics