The Goode Interrupted Homolosine projection emerged in 1908 as a deliberate mathematical challenge to the distortion inherent in the Mercator map. Developed by John Paul Goode, this equal-area projection merged homolographic and sinusoidal elements to provide a more accurate representation of global surface areas, reshaping how geographical data was visualized throughout the twentieth century.
Early Career and Academic Foundations
Born in Stewartville, Minnesota, on November 21, 1862, John Paul Goode completed his bachelor's degree at the University of Minnesota in 1889. His early professional life began at the Moorhead Normal School, where he provided instruction across diverse disciplines including chemistry, physics, botany, physiology, anatomy, and geology. In 1901, he married Ida Katherine Hancock, who also served as an instructor at the same institution. By the close of 1901, he moved to Charleston, Illinois, to join the faculty at Eastern Illinois State Normal School. In 1903, he attained a doctorate in economics from the University of Pennsylvania and accepted a professorship within the Department of Geography at the University of Chicago.
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During an American Association of Geographers meeting in Baltimore in 1908, Goode advocated for an alternative to the Mercator projection, citing its severe inaccuracies at the poles and northern latitudes. He engineered his solution by calculating the precise latitude of 40° 44′ 11.8″ N and S where the homolographic and sinusoidal projections shared an identical scale. By merging these forms, he created an interrupted, pseudo-cylindrical, equal-area map. While initially resisted by cartographic conventions of the era because the United States was not positioned at the map's center, the projection eventually gained recognition for its mathematical integrity.
Standardizing Cartography and Political Planning
Goode collaborated with former students Leppard and Espenshade to publish Goode's School Atlas in 1923 through Rand McNally. The work emphasized that every square inch of the map represented an equivalent number of square miles on the Earth's surface. Later retitled Goode's World Atlas, the publication remains in print today in its 23rd edition. Following a heart attack in 1928, Goode focused on administrative geography. In 1930, he proposed a radical restructuring of the United States political framework, suggesting a 50-state union consisting of 31 original states, 8 combined states formed from 17 smaller ones, and 11 city-states representing the nation's largest metropolitan centers.
Fast facts
- Born: 21 November 1862, Stewartville, Minnesota
- Died: 5 August 1932, Oceana County
- Education: University of Minnesota (BA, 1889); University of Pennsylvania (PhD, 1903)
- Primary Employers: Moorhead Normal School, Eastern Illinois State Normal School, University of Chicago
- Key Publication: Goode's School Atlas (1923)
- Projection Specialty: Interrupted Homolosine
- Citizenship: United States
- Age at death: 69
Questions readers ask
What was the purpose of the Goode Interrupted Homolosine projection?
It was designed to correct the severe distortion at the poles and northern latitudes found in the Mercator projection by creating an equal-area map.
Did John Paul Goode propose a change to the United States map?
Yes, in 1930 he proposed a new 50-state structure to replace the existing 48, using a combination of existing states and new metropolitan city-states.
Achievements
- Recorded as cartographer and geographer
