Search results
Results From The WOW.Com Content Network
Amy Sutton. Schuyler Skaats Wheeler (May 17, 1860 – April 20, 1923) was an American electrical engineer and manufacturer who invented the electric fan, an electric elevator design, and the electric fire engine. He is associated with the early development of the electric motor industry, especially to do with training the blind in this industry ...
A household electric fan. A large cylindrical fan. A fan is a powered machine used to create a flow of air. A fan consists of a rotating arrangement of vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner.
Emilie Loos. Philip H. Diehl (January 29, 1847 – April 7, 1913) was a German - American mechanical engineer and inventor who held several U.S. patents, including electric incandescent lamps, electric motors for sewing machines and other uses, and ceiling fans. Diehl was a contemporary of Thomas Edison and his inventions caused Edison to ...
By World War I most ceiling fans were made with four blades instead of the original two, which made fans quieter and allowed them to circulate more air. The early turn-of-the-century companies who successfully commercialized the sale of ceiling fans in the United States were what is today known as the Hunter Fan Company, Robbins & Myers ...
Handheld Brise fan from 1800. A handheld fan, or simply hand fan, is a broad, flat surface that is waved back-and-forth to create an airflow. Generally, purpose-made handheld fans are folding fans, which are shaped like a sector of a circle and made of a thin material (such as paper or feathers) mounted on slats which revolve around a pivot so that it can be closed when not in use.
History of discoveries timeline. Year. Event. 600 BCE. Ancient Greek philosopher Thales of Miletus described static electricity by rubbing fur on substances such as amber. 1600. English scientist William Gilbert coined the word electricus after careful experiments. He also explained the magnetism of Earth. 1660.
By 1908 there were 72 wind-driven electric generators from 5 kW to 25 kW. The largest machines were on 24 m (79 ft) towers with four-bladed 23 m (75 ft) diameter rotors. [37] In 1957 Johannes Juul installed a 24 m diameter wind turbine at Gedser, which ran from 1957 until 1967. This was a three-bladed, horizontal-axis, upwind, stall-regulated ...
[31] By the end of the 19th century, figures in the progress of electrical engineering were beginning to emerge. [32] Charles Proteus Steinmetz helped foster the development of alternating current that made possible the expansion of the electric power industry in the United States, formulating mathematical theories for engineers.