"(Walter) (C.) (Eells)" returned 14 hits

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Author: Claudius Ptolemy (c.85-c.165)
Map projections of a spherical earth and use of latitude and longitude to characterize position (first display of longitude)
Mediaitems: Ptolemy's world map, republished in 1482, Ptolemy portrait , Ptolemy world map description, with images, Ptolemy's world map, description and high-res image, Ptolemy history, The world according to Ptolemy
Category: Cartography
Author: John Napier (1550-1617)
Invention of logarithms, and the first published tables of logarithms.
Mediaitems: Two pages from Napier's table of logarithms, Diagram of spherical triangles from, Napier portrait, Biography of Napier, Linear and logarithmic scales, English translation of John Napier : Mirifici Logarithmorum Canonis Descriptio...by Ian Bruce
Category: Statistics & Graphics
Author: Joseph Priestley (1733-1804)
Historical timeline (life spans of 2,000 famous people, 1200 B.C. to 1750 A.D.), quantitative comparison by means of bars
Mediaitems: Priestley's specimen chart of biography, Priestley biography, Priestley portrait
Category: Cartography
Author: Charles de Fourcroy (1766-c.1810)
Use of geometric, proportional figures (squares) to compare demographic quantities by superposition, an early "tableau graphique''
Mediaitems: de Fourcroy's proportional squares, de Fourcroy's proportional squares, Description of de Fourcroy, from Palsky
Category: Statistics & Graphics
Authors: Pierre-Fran├žois Verhulst (1804-1849)
Development of the logistic curve, $ y = k / (1 + C e^)$, to describe the growth of human populations
Mediaitems: Verhulst bio, Pierre-Francois Verhulst et la loi logistique de la population, Verhulst portrait
Category: Statistics & Graphics
Author: Edward Walter Maunder (1851-1928)
Use of the "butterfly diagram'' to study the variation of sunspots over time, leading to the discovery that they were markedly reduced in frequency from 1645--1715 (the "Maunder minimum''). [Earlier work, started in 1843 by H. Schwabe, showed that sunspots exhibit an approximately twenty-two year cycle, with each eleven-year cycle of sunspots followed by a reversal of the direction of the sun's magnetic field]
Mediaitems: Maunder's butterfly diagram, The sunspot cycle, The butterfly diagram, 1904 Butterfly Diagram: Sunspots
Category: Statistics & Graphics
Authors: A. C. Haskell & Karl G. Karsten & A. R. Palmer
Numerous textbooks on graphics, describing principles of graphical presentation of numerical information (published at a rate of about two each year), e.g.,