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Biography
Rudolph M. Hunter
Rudolph Melville Hunter (June 20, 1856 – March 19, 1935) was an American inventor, engineer, patent attorney and entrepreneur. Hunter was granted 299 US patents, over 140 of them for electric railway apparatus. He played a key role in the development of "mixed control," long the standard method of controlling the speed of electric streetcars and locomotives. Hunter later largely abandoned his
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Biography
HP Nielsen
Hans Peter Nielsen (May 21, 1859 – September 11, 1945) was a Danish-born American machinist, mechanic, engineer, fireman, and inventor who lived most of his life in Alameda, California. In 1910 Nielsen built the first biplane in Alameda, commissioned by Adrian J Merle.[1] An early adopter of automobile technology, he also believed in the potential represented by aviation. Nielsen was also a
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Biography
Chiswell Langhorne
Colonel Chiswell Dabney Langhorne (November 4, 1843 – February 14, 1919) was an United States railroad industrialist. He was the father of Nancy Witcher Langhorne and the maternal grandfather of both Joyce Grenfell and Michael Langhorne Astor.[1] Langhorne was born in Lynchburg, Virginia at Point of Honor. He was the eldest son of John Scarsbrook Langhorne (who inherited Langhorne Mills in Ly
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Biography
Henry Barnes
Henry A. Barnes (December 16, 1906 – September 1968)[1] was an American traffic engineer and commissioner who served in many cities, including Flint, Michigan; Denver, Colorado; Baltimore, Maryland; and New York City. Barnes was responsible for many innovations in applied traffic engineering, including the Green Wave of coordinated traffic signals, the application of actuated traffic signals (
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Biography
Willard Franklyn Searle
Capt. Willard Franklyn "Bill" Searle Jr. USN (ret.) (January 17, 1924 – March 31, 2009) was an American ocean engineer who was principally responsible for developing equipment and many of the current techniques utilized in United States Navy diving and salvage operations.[1][2] Searle was born January 17, 1924 in Columbus, Ohio. He graduated from Bexley High School in 1941 and received the
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Biography
H. Lane Mitchell
Henry Lane Mitchell, known as H. Lane Mitchell (August 17, 1895 – November 8, 1978), was a civil engineer who served from 1934 to 1968 as the elected citywide public works commissioner in his adopted city of Shreveport, Louisiana. Hailed during his tenure as a popular success, his life after retirement was marred by legal troubles which led to his imprisonment upon conviction of theft of multi
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Topic Review
Mobile Phone Overuse
Mobile phone overuse (smartphone addiction, mobile-phone addiction, problem mobile phone use, or mobile phone dependency) is a dependence syndrome seen among mobile phone users. Some mobile phone users exhibit problematic behaviors related to substance use disorders. These behaviors can include preoccupation with mobile communication, excessive money or time spent on mobile phones, use of mobile phones in socially or physically inappropriate situations such as driving an automobile. Increased use can also lead to increased time on mobile communication, adverse effects on relationships, and anxiety if separated from a mobile phone or sufficient signal.
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Topic Review
Toophan
The Toophan (Persian: طوفان‎ "Storm", rarely Toofan) is an Iranian SACLOS anti-tank guided missile reverse-engineered from the United States of America BGM-71 TOW missile. The Toophan 1, an unlicensed copy of the BGM-71A TOW missile, began mass production in 1988 and the Toophan 2, a BGM-71C ITOW variant, was publicly shown in 2000. The Toophan comes in at least 11 variants, many of which are poorly documented, including variants with laser guidance, thermobaric warheads, and tandem-warheads with increased penetration. The Toophan is manufactured jointly by the Aerospace Industries Organization of Iran and Iran Electronics Industries. It's normally deployed from ground-based tripods, and can also be mounted on fighting vehicles and helicopters. Like the BGM-71 TOW missile, the Toophan is a large, rugged, powerful, and reliable anti-tank guided missile deployed by small teams against tanks, armored vehicles, buildings, and other targets. The Toophan forms the backbone of the Iranian Armed Forces's ATGM inventory and is procured in large quantities in a variety of variants. The Toophan has been exported to the governments of Iraq and Syria and to a large number of non-state actors in the Middle East, and has been used in the Iran–Iraq War, the 2006 Lebanon War and the Iraqi, Syrian, and Yemeni Civil Wars.
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Topic Review
NanoRacks CubeSat Deployer
The NanoRacks CubeSat Deployer (NRCSD) is a device to deploy CubeSats into orbit from the International Space Station. Currently, there are two CubeSat deployers on board the International Space Station (ISS): The Japanese Experiment Module (JEM) Small Satellite Orbital Deployer (J-SSOD) and the NanoRacks CubeSat Deployer (NRCSD). The J-SSOD is the first of its kind to deploy small satellites from the International Space Station. The NRCSD is the first commercially operated small satellite deployer from the ISS, maximizing full capabilities of each airlock cycle of deployments. CubeSats belong to a class of research spacecraft called nanosatellites. The basic cube-shaped satellites measure 10 centimeters (3.9 in) on each side, weigh less than 3 pounds (1.4 kg), and have a volume of about 1 liter (0.22 imp gal; 0.26 U.S. gal), although there are CubeSats which are built and deployed with sizes of multiples of 10 cm in length. (As of 2014), one method of getting CubeSats to orbit is to transport them aboard a larger spacecraft as part of a cargo load to a larger space station. When this is done, deploying the CubeSats into orbit as a separate artificial satellite requires a special apparatus, such as the NanoRacks CubeSat Deployer. The NRCSD is put into position to be grabbed by one of the ISS's robotic arms, which then places the CubeSat deployer into the correct position externally mounted to the ISS to be able to release the miniature satellites into proper orbit.
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Topic Review
Solar Compass
The solar compass, a surveying instrument that makes use of the sun's direction, was first invented and made by William Austin Burt. He patented it on February 25, 1836, in the United States Patent Office as No 9428X. It received a medal at the Great Exhibition of 1851.
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