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dominionvoting.com. Dominion Voting Systems Corporation is a North American [2] company that produces and sells electronic voting hardware and software, including voting machines and tabulators, in Canada and the United States. [3] The company's headquarters are in Toronto, Ontario, where it was founded, and Denver, Colorado. [4]
Children. Norma and Albert Jr. Marie Van Brittan Brown (October 30, 1922 – February 2, 1999) was an American nurse, her husband Albert L. Brown, an electronics technician. In 1966 they invented an audio-visual home security system [1][2] That same year they applied for a patent for their security system. It was granted three years later in 1969.
Timeline of United States inventions (1890–1945) Robert H. Goddard (1882–1945), the American physicist and inventor who built and launched the world's first liquid-propellant rocket on March 16, 1926. [1] Goddard held 214 patents for his inventions and pioneering innovations in liquid-propelled, guided, and multi-stage rockets.
A barometer is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather. Many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries.
April 25, 1820. West Boylston, Massachusetts, US. Died. 1901. Nationality. American. Known for. Burglar alarm. Edwin Holmes (April 25, 1820 – 1901) [1][2] was an American businessman who is credited with inventing, commercializing the electromagnetic burglar alarm and with establishing the first burglar alarm networks.
The Denver area, part of the Territory of Kansas, was sparsely settled until the late 1850s.Occasional parties of prospectors came looking for gold, then moved on. In July 1858, Green Russell and Sam Bates found a small placer deposit near the mouth of Little Dry Creek (in the present-day suburb of Englewood) that yielded about 20 troy ounces (620 g) of gold, the first significant gold ...
1874 — Herbert McLeod invents the McLeod gauge. 1885 — Calender-Van Duesen invented the platinum resistance temperature device. 1887 — Richard Assmann invents the psychrometer (Wet and Dry Bulb Thermometers) 1892 — Henri-Louis Le Châtelier builds the first optical pyrometer.
Evangelista Torricelli (/ ˌtɒriˈtʃɛli / TORR-ee-CHEL-ee; [1][2] Italian: [evandʒeˈlista torriˈtʃɛlli] ⓘ; 15 October 1608 – 25 October 1647) was an Italian physicist and mathematician, and a student of Galileo. He is best known for his invention of the barometer, but is also known for his advances in optics and work on the method ...