Search results
Results from the WOW.Com Content Network
In Ritchie's third patent application (#38,126) dated April 7, 1863, several features that contributed to the success of his compass are revealed, including a floating card of nearly the same specific gravity as the liquid, an air-tight metallic case, and an elastic chamber that served as a diaphragm, compensating for temperature changes and ...
Bernice Gamble Andrews (1905-1928) died with him as his passenger. [4] She was the beneficiary of his insurance policy, and she was the daughter of George A. Gamble of Williamsport, Pennsylvania.
Elmer Ambrose Sperry Sr. (October 12, 1860 – June 16, 1930) was an American inventor and entrepreneur, most famous for construction, two years after Hermann Anschütz-Kaempfe, of the gyrocompass and as founder of the Sperry Gyroscope Company. [3]
Ignazio Porro (25 November 1801 – 8 October 1875) was an Italian inventor of optical instruments. Porro's name is most closely associated with the prism system which he invented around 1850 and which is used in the construction of Porro prism binoculars. He also developed a strip camera in 1853 for mapping, which was one of the earliest such. [1]
The magnetic compass was first invented as a device for divination as early as the Chinese Han dynasty and Tang dynasty (since about 206 BC). [1] [3] [34] The compass was used in Song dynasty China by the military for navigational orienteering by 1040–44, [22] [35] [36] and was used for maritime navigation by 1111 to 1117. [37]
In the middle of the XVth century historian Flavio Biondo wrote that compass had been invented in Amalfi. In 1511, Giovan Battista Pio wrote: "In Amalfi, Campania, the use of the magnet was invented, according to Flavio". But later due to a misplaced comma this was narrated as "the use of the magnet was invented by Flavio, it is said". [4]
With Lyman J. Briggs, Heyl invented the Heyl–Briggs earth inductor compass. [2] The compass used a spinning electric coil mounted in an airplane to determine the airplane's bearing in relation to the Earth's magnetic field. This invention won for Heyl and Briggs the 1922 Magellan Medal of the American Philosophical Society.
Hans Lipperhey [a] (c. 1570 – buried 29 September 1619), also known as Johann Lippershey or simply Lippershey, [b] was a German-Dutch spectacle-maker.He is commonly associated with the invention of the telescope, because he was the first one who tried to obtain a patent for it. [1]