# "Ronald Aylmer Fisher" returned 3 hits

**Fisher**, ca. 1955, Gibb's models, Gibbs biography

**Fisher**biography, with other links and portraits, R. A.

**Fisher**portrait, Collected papers of R. A.

**Fisher**

1

Graphical methods applied to explain fundamental relations in thermodynamics; this includes diagrams of entropy vs. temperature (where work or heat is proportional to area), and the first use of trilinear coordinates (graphs of (x,y,z) where x+y+z=constant)

Mediaitems:
Gibbs, Elementary principles in statistical mechanics, Gibbs portrait, Plot on trilinear graph paper by R. A. **Fisher**, ca. 1955, Gibb's models, Gibbs biography

Category:
Statistics & Graphics

2

Beginnings of the development of modern statistical theory (sampling distributions (1915), randomization, likelihood (1921), small sample theory, exact distributions, analysis of variance (1925), etc.)

Mediaitems:
**Fisher** biography, with other links and portraits, R. A. **Fisher** portrait, Collected papers of R. A. **Fisher**

Category:
Statistics & Graphics

3

Initial development of geographic information systems, combining spatially-referenced data, spatial models and map-based visualization. Example: Harvard Laboratory for Computer Graphics (and Spatial Analysis) develops SYMAP, producing isoline, choropleth and proximal maps on a line printer

Mediaitems:
Early SYMAP image of Connecticut, The GIS History Project, GIS Milestones, Brief Biography

Category:
Cartography