(Louis) (Leon) (Thurstone) returned 5 hits

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1
Authors: Louis-Léger Vauthier (1815-1881)
Population contour map (population density shown by contours), the first statistical use of a contour map
Category: Cartography
2
Authors: Auguste Lumière (1862-1954) & Louis Lumière (1864-1948)
First movie, with the cinématographe, using the principle of intermittent movement of film (16 fps), but producing smooth projection (first public film screening on December 28, 1895 at the Cafe Grand)
Category: Technology
3
Author: Leon Montigny (1847-1899)
Election map of Paris, showing the breakdown of votes by parties
Category: Cartography
4
Authors: Louis Ézéchiel Pouchet (1748-1809)
Multi-number graphical calculation (proto-nomogram: contours applied to multiplication table, later rectified by Lalanne cite{Lalanne:1846})
Category: Statistics & Graphics
5
Authors: Louis Jacques Mandé Daguerre (1787-1851)
Invention of the first practical photographic process, using coated plates of metal and glass
Category: Technology