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Sean Watson

Robert Hooke - Wikipedia, the free encyclopedia - 0 views

  • Jump to: navigation, search Robert Hooke Portrait of Hooke, 2004. Born 18 July 1635Freshwater, Isle of Wight, England Died 3 March 1703 (aged 67)London, England Fields Physics and chemistry Institutions Oxford University Alma mater Christ Church, Oxford Academic advisors Robert Boyle Known for Hooke's LawMicroscopyapplied the word 'cell' Influences Richard Busby Contents [hide] 1 Life and works 1.1 Early life 1.2 Oxford 1.3 The Watch Balance Spring 1.4 Royal Society 2 Personality and disputes 3 Hooke the scientist 3.1 Mechanics 3.2 Gravitation 3.3 Microscopy 3.4 Astronomy 4 Hooke the architect 5 Likenesses 6 Commemorations 7 See also 8 References 9 Further reading 10 External links //
  • Hooke is known for his law of elasticity (Hooke's law), his book, Micrographia, and for first applying the word "cell" to describe the basic unit of life
  • Micrographia
Katherine Chipman

Newsroom - The Church of Jesus Christ of Latter-day Saints - 0 views

  • Speaking of civility on a personal level, Elder Robert D. Hales of the Quorum of the Twelve Apostles taught Latter-day Saints how to respond to criticism: “Some people mistakenly think responses such as silence, meekness, forgiveness, and bearing humble testimony are passive or weak. But, to ‘love [our] enemies, bless them that curse [us], do good to them that hate [us], and pray for them which despitefully use [us], and persecute [us]’ (Matthew 5:44) takes faith, strength, and, most of all, Christian courage.”
Katherine Chipman

The Trials of J. Robert Oppenheimer | American Experience | PBS Video - 0 views

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    A PBS American Experience Episode on J. Robert Oppenheimer.
Kristi Koerner

Robert Hooke - 0 views

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    Good website to explain Hooke and his scientific ideas.
Katherine Chipman

WGBH American Experience . The Trials of J. Robert Oppenheimer . Then & Now | PBS - 1 views

  • Today, the world is attempting to control nuclear proliferation through diplomacy and treaties. In 1996, the Comprehensive Test Ban Treaty prohibited nations from using bombs for either military or research purposes. Forty-one states with nuclear capabilities have signed the treaty, but it cannot take effect until three more nations join. India, Pakistan, and North Korea are among the countries that have refused. Although the United States has signed the treaty, it has not ratified it yet.
Katherine Chipman

Search Results | NuclearPathways.org - 0 views

  • The Manhattan Project was the code name for the U.S. effort during World War II to produce the atomic bomb. The program was under the leadership of Gen. Leslie Groves, and theoretical physicist J. Robert Oppenheimer. The main laboratory was built on an isolated mesa at Los Alamos, New Mexico. The first atomic bomb was tested at Alamogordo, New Mexico, on July 16, 1945.
anonymous

The trouble with Geniuses - 0 views

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    Some times, smarts isn't all it takes to be successful
James Wilcox

Airplane Timeline - Greatest Engineering Achievements of the Twentieth Century - 0 views

    • James Wilcox
       
      I love helicopters!  But I never knew that they had been around for so many years.
  • 1947   Sound barrior broken U.S. Air Force pilot Captain Charles "Chuck" Yeager becomes the fastest man alive when he pilots the Bell X-1 faster than sound for the first time on October 14 over the town of Victorville, California.
  • 1952   Discovery of the area rule of aircraft design Richard Whitcomb, an engineer at Langley Memorial Aeronautical Laboratory, discovers and experimentally verifies an aircraft design concept known as the area rule. A revolutionary method of designing aircraft to reduce drag and increase speed without additional power, the area rule is incorporated into the development of almost every American supersonic aircraft. He later invents winglets, which increase the lift-to-drag ratio of transport airplanes and other vehicles.
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  • 1925-1926   Introduction of lightweight, air-cooled radial engines The introduction of a new generation of lightweight, air-cooled radial engines revolutionizes aeronautics, making bigger, faster planes possible.
  •   1917   The Junkers J4, an all-metal airplane, introduced Hugo Junkers, a German professor of mechanics introduces the Junkers J4, an all-metal airplane built largely of a relatively lightweight aluminum alloy called duralumin.
  • 1904   Concept of a fixed "boundary layer" described in paper by Ludwig Prandtl German professor Ludwig Prandtl presents one of the most important papers in the history of aerodynamics, an eight-page document describing the concept of a fixed "boundary layer," the molecular layer of air on the surface of an aircraft wing. Over the next 20 years Prandtl and his graduate students pioneer theoretical aerodynamics.
  • 1933   First modern commercial airliner In February, Boeing introduces the 247, a twin-engine 10-passenger monoplane that is the first modern commercial airliner. With variable-pitch propellers, it has an economical cruising speed and excellent takeoff. Retractable landing gear reduces drag during flight.
  • 935   First practical radar British scientist Sir Robert Watson-Watt patents the first practical radar (for radio detection and ranging) system for meteorological applications. During World War II radar is successfully used in Great Britain to detect incoming aircraft and provide information to intercept bombers.
  • 1937   Jet engines designed Jet engines designed independently by Britain’s Frank Whittle and Germany’s Hans von Ohain make their first test runs. (Seven years earlier, Whittle, a young Royal Air Force officer, filed a patent for a gas turbine engine to power an aircraft, but the Royal Air Ministry was not interested in developing the idea at the time. Meanwhile, German doctoral student Von Ohain was developing his own design.) Two years later, on August 27, the first jet aircraft, the Heinkel HE 178, takes off, powered by von Ohain’s HE S-3 engine.
  •   1939   First practical singlerotor helicopters Russian emigre Igor Sikorsky develops the VS-300 helicopter for the U.S. Army, one of the first practical singlerotor helicopters.
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