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Navy Electronics Laboratory
The U.S. Navy Electronics Laboratory (''NEL'') was created in 1945, with consolidation of the naval radio station, radar operators training school, and radio security activity of the Navy Radio and Sound Lab (NRSL) and its wartime partner, the University of California Division of War Research. NEL’s charter was “''to effectuate the solution of any problem in the field of electronics, in connection with the design, procurement, testing, installation and maintenance of electronic equipment for the U.S. Navy.''” Its radio communications and sonar work was augmented with basic research in the propagation of electromagnetic energy in the atmosphere and of sound in the ocean. History In November 1945, the Navy Radio and Sound Lab was renamed as Navy Electronics Laboratory. 80% of the Point Loma Military Reservation evolved into the Naval Electronics Laboratory Center (NELC) at the end of World War II. In turn NELC was merged into the Naval Ocean Systems Center (NOSC) in 1977. Thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar
Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. Radio waves (pulsed or continuous) from the transmitter reflect off the objects and return to the receiver, giving information about the objects' locations and speeds. Radar was developed secretly for military use by several countries in the period before and during World War II. A key development was the cavity magnetron in the United Kingdom, which allowed the creation of relatively small systems with sub-meter resolution. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brass
Brass is an alloy of copper (Cu) and zinc (Zn), in proportions which can be varied to achieve different mechanical, electrical, and chemical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure. Brass is similar to bronze, another copper alloy, that uses tin instead of zinc. Both bronze and brass may include small proportions of a range of other elements including arsenic (As), lead (Pb), phosphorus (P), aluminium (Al), manganese (Mn), and silicon (Si). Historically, the distinction between the two alloys has been less consistent and clear, and modern practice in museums and archaeology increasingly avoids both terms for historical objects in favor of the more general "copper alloy". Brass has long been a popular material for decoration due to its bright, gold-like appearance; being used for drawer pulls and doorknobs. It has also been widely used to make utensils because of its low melting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USS Skate (SSN-578)
USS ''Skate'' (SSN-578), the third submarine of the United States Navy named for the skate, a type of ray, was the lead ship of the of nuclear submarines. She was the third nuclear submarine commissioned, the first to make a completely submerged trans-Atlantic crossing, the second submarine to reach the North Pole, and the first to surface there. The contract to build her was awarded to the Electric Boat division of General Dynamics on 18 July 1955, and her keel was laid in Groton, Connecticut on 21 July 1955. She was launched on 16 May 1957, sponsored by Mrs. Lewis L. Strauss, and commissioned on 23 December 1957, with Commander James F. Calvert in command. Operational history ''Skate'' conducted shakedown training out of New London, Connecticut until 29 January 1958, when she cruised to the Bermuda operating area, then returned to her home port on 8 February. Sixteen days later, the nuclear powered submarine set a course for the Isle of Portland, England. Before retu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waldo Lyon
Waldo Kampmeier Lyon (May 19, 1914 – May 5, 1998) was the founder and chief research scientist for the U.S. Navy of the Arctic Submarine Laboratory at the Naval Electronics Laboratory. He retired in 1996 after 55 years of government service. During his career he advised top Navy officials on essential matters of national defense and was personally thanked by Presidents Eisenhower and Kennedy for his efforts. Military career For 51 years, Lyon worked for Space and Naval Warfare Systems Center, San Diego (SSC San Diego) and its predecessor organizations. Lyon started work there less than a year after its June 1940 establishment as the Navy Radio and Sound Lab, as their first Ph.D. physicist. He was charged with forming and directing initial efforts of the Sound Division. The lab was used during World War II for testing, repairing and modifying submarine equipment and harbor defense systems in the Pacific Ocean. During the war, German U-boats in the Gulf of St. Lawrence were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Pole
The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. It is called the True North Pole to distinguish from the Magnetic North Pole. The North Pole is by definition the northernmost point on the Earth, lying antipodally to the South Pole. It defines geodetic latitude 90° North, as well as the direction of true north. At the North Pole all directions point south; all lines of longitude converge there, so its longitude can be defined as any degree value. No time zone has been assigned to the North Pole, so any time can be used as the local time. Along tight latitude circles, counterclockwise is east and clockwise is west. The North Pole is at the center of the Northern Hemisphere. The nearest land is usually said to be Kaffeklubben Island, off the northern coast of Greenland about away, though some perhaps semi-permanent gravel banks lie slightly clos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe and Asia from the "New World" of the Americas in the European perception of the World. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and North and South America to the west. As one component of the interconnected World Ocean, it is connected in the north to the Arctic Ocean, to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south (other definitions describe the Atlantic as extending southward to Antarctica). The Atlantic Ocean is divided in two parts, by the Equatorial Counter Current, with the North(ern) Atlantic Ocean and the South(ern) Atlantic Ocean split at about 8°N. Scientific explorations of the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean . '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the |
USS Nautilus (SSN-571)
USS ''Nautilus'' (SSN-571) was the world's first operational nuclear-powered submarine and the first submarine to complete a submerged transit of the North Pole on 3 August 1958. Her initial commanding officer was Eugene "Dennis" Wilkinson, a widely respected naval officer who set the stage for many of the protocols of today's Nuclear Navy of the US, and who had a storied career during military service and afterwards. Sharing a name with Captain Nemo's fictional submarine in Jules Verne's classic 1870 science fiction novel ''Twenty Thousand Leagues Under the Sea'' and the that served with distinction in World War II, the new nuclear-powered ''Nautilus'' was authorized in 1951. Construction began in 1952, and the boat was launched in January 1954, sponsored by Mamie Eisenhower, First Lady of the United States, wife of 34th President Dwight D. Eisenhower; it was commissioned the following September into the United States Navy. ''Nautilus'' was delivered to the Navy in 1955. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Ice
Sea ice arises as seawater freezes. Because ice is less dense than water, it floats on the ocean's surface (as does fresh water ice, which has an even lower density). Sea ice covers about 7% of the Earth's surface and about 12% of the world's oceans. Much of the world's sea ice is enclosed within the polar ice packs in the Earth's polar regions: the Arctic ice pack of the Arctic Ocean and the Antarctic ice pack of the Southern Ocean. Polar packs undergo a significant yearly cycling in surface extent, a natural process upon which depends the Arctic ecology, including the ocean's ecosystems. Due to the action of winds, currents and temperature fluctuations, sea ice is very dynamic, leading to a wide variety of ice types and features. Sea ice may be contrasted with icebergs, which are chunks of ice shelves or glaciers that calve into the ocean. Depending on location, sea ice expanses may also incorporate icebergs. General features and dynamics Sea ice does not simply grow and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Ocean
The Arctic Ocean is the smallest and shallowest of the world's five major oceans. It spans an area of approximately and is known as the coldest of all the oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, although some oceanographers call it the Arctic Mediterranean Sea. It has been described approximately as an estuary of the Atlantic Ocean. It is also seen as the northernmost part of the all-encompassing World Ocean. The Arctic Ocean includes the North Pole region in the middle of the Northern Hemisphere and extends south to about 60°N. The Arctic Ocean is surrounded by Eurasia and North America, and the borders follow topographic features: the Bering Strait on the Pacific side and the Greenland Scotland Ridge on the Atlantic side. It is mostly covered by sea ice throughout the year and almost completely in winter. The Arctic Ocean's surface temperature and salinity vary seasonally as the ice cover melts and freezes; its salinity is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Submarine Laboratory
The Arctic Submarine Laboratory is a research facility of the U.S. Navy's Undersea Warfighting Development Center in San Diego, California. It began as a converted World War II mortar emplacement, ''Battery Whistler'', and was focused on scientific exploration of the Arctic Basin, and particularly providing the capability to operate attack submarines in the Arctic under the ice canopy. Founder In 1941, Dr. Waldo K. Lyon started work at the Navy Radio and Sound Lab, as their first Ph.D. physicist. He was charged with forming and directing initial efforts of the Sound Division. The lab was used during World War II for testing, repairing and modifying submarine equipment and harbor defense systems in the Pacific Ocean. Lyon recalls the creation of the Arctic Submarine Laboratory after the war: :"''In 1946 when Admiral Byrd took the expedition to Antarctica, I got a letter asking if there was any research I wanted to do in conjunction with the expedition. I said yes, try a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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