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The firm immediately began to develop its first outboard motor, a one-cylinder, 1.5 hp (1.1 kW) model, which became an instant success upon its introduction in 1909. [ 3 ] Because of Bessie's poor health, the Evinrudes sold their company in 1913, and Ole agreed to not re-enter the outboard motor business for five years.
Diagram of the most basic resonant inductive coupling wireless power transfer system. [1] This is called 2nd-resonance technology. [2] Diagram of the "WiTricity" resonant inductive wireless power system demonstrated by Marin Soljačić's MIT team in 2007.
[13] [14] The total water extraction from center-pivot irrigation in the area is estimated to be about 5.42 million acre-feet of water per year. [15] In 1950, irrigated cropland covered 100,000 hectares (250,000 acres). With the use of center-pivot irrigation, nearly 1.2 million hectares (3 million acres) of land were irrigated in Kansas alone.
When the phone is set on the pad, a coil in the pad creates a magnetic field [1] which induces a current in another coil, in the phone, charging its battery. Generic block diagram of a wireless power system. Wireless power transfer (WPT; also wireless energy transmission or WET) is the transmission of electrical energy without wires as a
Most automatic irrigation valves are diaphragm valves in which the water above the diaphragm must be discharged for the valve to open. In a hydraulic system, the controller and valves are connected via small plastic tubes approximately 4 mm (¼ in) in diameter. The controller opens the tube connected to the valve, allowing that valve to open.
Rainguns are similar to impact sprinklers, except that they generally operate at very high pressures of 2.8 to 9.0 bar (280 to 900 kPa; 40 to 130 lbf/in 2) and flows of 3 to 76 L/s (50 to 1,200 US gal/min), usually with nozzle diameters in the range of 10 to 50 mm (0.5 to 1.9 in). In addition to irrigation, guns are used for industrial ...