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Aurelio Ángel Baldor de la Vega (October 22, 1906, Havana, Cuba – April 2, 1978, Miami) was a Cuban mathematician, educator and lawyer. [1] Baldor is the author of a secondary school algebra textbook, titled Álgebra, used throughout the Spanish-speaking world and published for the first time in 1941. He is also the author of the following ...
German-Russian, engineer and physicist; built a 15 watt motor in 1834 submitted to the Academy of Sciences in Paris with details published in 1835; demonstrated first use of electric motor to propel a boat; first real useful rotary electrical motor. [3] [5] [6] [18] [20] 1837, Thomas Davenport and Emily Davenport: American, blacksmith-inventor ...
It was powered by two Siemens & Halske alternators rated 30 hp (22 kW), 2 kV at 120 Hz and used 200 series-connected Gaulard 2-kV/20-V step-down transformers provided with a closed magnetic circuit, one for each lamp. Few months later it was followed by the first British AC system, which was put into service at the Grosvenor Gallery, London. It ...
* Note: two versions: one contained a 16-cylinder 7HDL, co-developed by GE and the German firm Deutz-MWM, rated at 6000 HP; the other a 16-cylinder 7FDL rated at 4390 HP. The units equipped with the 7FDL were a sub-version AC6000 "Convertible" and were produced to get the type into operation while the 7HDL was developed.
An electrostatic motor or capacitor motor is a type of electric motor based on the attraction and repulsion of electric charge. An alternative type of electrostatic motor is the spacecraft electrostatic ion drive thruster where forces and motion are created by electrostatically accelerating ions.
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In 2007, Baldor Electric acquired the Dodge and Reliance Electric brands from Rockwell Automation for $1.8 billion. This more than doubled the size of the company, taking it from $800 million in annual revenue to $1.8 billion. In 2011, Baldor was acquired by ABB Ltd of Switzerland in an all-cash deal of US$4.2 billion ($1.1 billion debt ...
Timeline of motor and engine technology (c. 30–70 AD) – Hero of Alexandria describes the first documented steam-powered device, the aeolipile. [1] 13th century – Chinese chronicles wrote about a solid-rocket motor used in warfare. 1698 – Thomas Savery builds a steam-powered water pump for pumping water out of mines. [2]