Search results
Results From The WOW.Com Content Network
He also invented a device to combine sound with motion pictures. [18] This attracted the attention of local entrepreneur Joseph A. Numero of Minneapolis, Minnesota . Numero owned a company that manufactured audio equipment called Ultraphone Sound Systems Inc. and was later renamed Cinema Supplies Inc. [ 18 ] He hired Jones in 1927 as an ...
John B. Gorrie (October 3, 1803 – June 29, 1855) was a Nevisian-born American physician and scientist, credited as the inventor of mechanical refrigeration. [1] [2]Born on the Island of Nevis in the Leeward Islands of the West Indies to Scottish parents on October 3, 1803, he spent his childhood in South Carolina.
IBM's 1st black Distinguished Engineer and 2nd black IBM Fellow. Inventor of several software engineering techniques including system and methods for locating mobile devices using location and presence information [98] Jackson, John W. Jr. 1953–2007 Electrical engineer, inventor, activist: Co-inventor of imaging x-ray spectrometer. NASA engineer.
David N. Crosthwait Jr. (May 27, 1898 – February 25, 1976) was an African-American mechanical and electrical engineer, inventor, and writer.Crosthwait's expertise was on air ventilation, central air conditioning, and heat transfer systems.
Thomas Midgley Jr. (May 18, 1889 – November 2, 1944) was an American mechanical and chemical engineer.He played a major role in developing leaded gasoline (tetraethyl lead) and some of the first chlorofluorocarbons (CFCs), better known in the United States by the brand name Freon; both products were later banned from common use due to their harmful impact on human health and the environment.
The liquefied gas then circulated through the refrigeration coils and vaporised again, cooling down the surrounding system. The machine employed a 5 m (16 ft.) flywheel and produced 3,000 kilograms (6,600 lb) of ice per day. In 1856 Harrison went to London where he patented both his process (747 of 1856) and his apparatus (2362 of 1857). [3]
Around 400 BCE, they invented the predecessor to artificial refrigeration: a large pyramidal structure called a yakhchal that used evaporation and insulation to keep things cool.
Granville Tailer Woods (April 23, 1856 – January 30, 1910) was an American inventor who held more than 50 patents in the United States. [1] He was the first African American mechanical and electrical engineer after the Civil War. [2]