c. 19th-Century Explorations

VI. The World Wars and the Interwar Period, 1914–1945> A. Global and Comparative Dimensions> 5. Technological Developments

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  The Encyclopedia of World History.  2001.

(See 1913)

5. Technological Developments
The major achievements in technology follow.	1
a. Energy and Materials
1921
Tetraethyl lead, gasoline antiknock additive, produced by Thomas Midgley (1889–1994).	2
1930–35
Development of first commercially practicable catalytic cracking system for petroleum by Eugene J. Houdry (1892–1962).	3
1930–37
Development of gas turbine unit for jet propulsion in aircraft by Frank Whittle.	4
1942
DAWN OF THE NUCLEAR AGE. The first self-sustaining nuclear chain reaction achieved at Stagg Field, Chicago, by Enrico Fermi (1901–54). The first full-scale use of nuclear fuel to produce electricity occurred at Calder Hall (England) in 1956.	5

The Encyclopedia of World History, Sixth edition. Peter N. Stearns, general editor. Copyright © 2001 by Houghton Mifflin Company. Maps by Mary Reilly, copyright 2001 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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