Timeline of United States inventions (1890–1945) of these fibers for textile applications is more recent. The first commercial production of fiberglass was in 1936. In 1938, fiberglass was invented by Russell Games Slayter of Owens-Corning. 1938 Xerography Xerography, which means "dry writing" in Greek, is a process of making copies. Xerography makes copies without using ink. In this process, static electricity charges a lighted plate; a plastic powder is applied to the areas of the page to remain white. The photocopier was invented in 1938 by Chester Floyd Carlson who marketed his revolutionary device to about 20 companies before he could interest any. The Haloid Company,
First World and Professor George J. Bryjak defines the First World to be the "modern, industrial, capitalist countries of North America and Europe". L. Robert Kohls, former director of training for the U.S. Information Agency and the Meridian International Center in Washington, D.C. uses First World and "fully developed" as synonyms. Varying definitions of the term "First World" and the uncertainty of the term in today's world leads to different indicators of First World status. In 1945, the United Nations used the terms first, second, third, and fourth worlds to define the relative wealth of nations (although popular use of the term