ocr: B - a - - a CHESTER CARLSON WILLIS CARRIER 1906-1968 1876-1950 L E HESTER CARLSON was born N THELATE F in Seattle. He studied physics, 19th century, H and went to work in the patent air-cooling was department ofBell Telephone carried out by Laboratories. In his work, Carlson blowing air over K had to carry out large quantities of ice.In the hot SuHu L copying using wet chemicals. The summer of1880, Madison Square M task was laborious and messy. Theater in New York used four tons Thisi inspired him to develop a dry ofice at each performance. The first method of copying. Carlson's first true air ...
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