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Argo (ROV)
''Argo'' is an unmanned deep-towed undersea video camera sled developed by Dr. Robert Ballard through Woods Hole Oceanographic Institute's Deep Submergence Laboratory. ''Argo'' is most famous for its role in the discovery of the wreck of the RMS ''Titanic'' in 1985. Argo would also play the key role in Ballard's discovery of the wreck of the battleship '' Bismarck'' in 1989. The towed sled, capable of operating depths of 6,000 meters (20,000 feet), meant 98% of the ocean floor was within reach. The original ''Argo'', used to find Titanic, was long, tall, and wide and weighed about in air. It had an array of cameras looking forward and down, as well as strobes and incandescent lighting to illuminate the ocean floor. It could acquire wide-angle film and television pictures while flying above the sea floor, towed from a surface vessel, and could also zoom in for detailed views. See also * Acoustically Navigated Geological Underwater Survey The Acoustically Navigated Geolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argo Submersible
In Greek mythology, the ''Argo'' ( ; ) was the ship of Jason and the Argonauts. The ship was built with divine aid, and some ancient sources describe her as the first ship to sail the seas. The ''Argo'' carried the Argonauts on their quest for the Golden Fleece from Iolcos to Colchis. After the journey, the ship was retired and dedicated to Poseidon, the divine ruler of the seas. The ship has gone on to be used as a motif in a variety of sources beyond the original myth from books, films and more. Name Most accounts name the ship after her builder, Argus (Argonaut), Argus. The adjectival form is ''Argoan'' , from Greek ''Ἀργῶος'' through Latin ''Argōus''. Diodorus Siculus records that some thought the name was derived from an ancient Greek word for "swift" to indicate that the ship was designed to move quickly. Cicero, the Roman senator and orator, proposed that it was named after the Argives, a name for the Greek people of Argos, Peloponnese, Argos in the Peloponnes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Ballard
Robert Duane Ballard (born June 30, 1942) is an American retired Navy officer and a professor of oceanography at the University of Rhode Island who is noted for his work in underwater archaeology (maritime archaeology and archaeology of shipwrecks) and marine geology. He is best known by the general public for the discoveries of the wrecks of the RMS ''Titanic'' in 1985, the battleship ''Bismarck'' in 1989, and the aircraft carrier in 1998. He discovered the wreck of John F. Kennedy's '' PT-109'' in 2002 and visited Biuku Gasa and Eroni Kumana, who saved its crew. Ballard discovered hydrothermal vents, where life goes on powered by nutrient chemicals emitted by the vents rather than the sunlight that drives most life on Earth; he said "finding hydrothermal vents beats the hell out of finding the ''Titanic''", and his mother commented "It's too bad you found that rusty old boat... they're only going to remember you for finding t. Ballard also established the JASON P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woods Hole Oceanographic Institute
The Woods Hole Oceanographic Institution (WHOI, acronym pronounced ) is a private, nonprofit research and higher education facility dedicated to the study of marine science and engineering. Established in 1930 in Woods Hole, Massachusetts, it is the largest independent oceanographic research institution in the U.S., with staff and students numbering about 1,000. Constitution The institution is organized into six departments, the Cooperative Institute for Climate and Ocean Research, and a marine policy center. Its shore-based facilities are located in the village of Woods Hole, Massachusetts, United States and a mile and a half away on the Quissett Campus. The bulk of the institution's funding comes from grants and contracts from the National Science Foundation and other government agencies, augmented by foundations and private donations. WHOI scientists, engineers, and students collaborate to develop theories, test ideas, build seagoing instruments, and collect data in diverse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wreck Of The RMS Titanic
The wreck of British ocean liner RMS ''Titanic'' lies at a depth of about , about south-southeast off the coast of Newfoundland. It lies in two main pieces about apart. The bow is still recognisable with many preserved interiors, despite deterioration and damage sustained by hitting the sea floor; in contrast, the stern is heavily damaged. The debris field around the wreck contains hundreds of thousands of items spilled from the ship as she sank. The ''Titanic'' sank in 1912, following her collision with an iceberg during her maiden voyage. Numerous expeditions unsuccessfully tried using sonar to map the seabed in the hope of finding the wreckage. In 1985, the wreck was finally located by a joint French–American expedition led by Jean-Louis Michel of IFREMER and Robert Ballard of the Woods Hole Oceanographic Institution, originally on a mission to find two nuclear Cold War submarines. The wreck has been the focus of intense interest and has been visited by numerous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Battleship Bismarck
''Bismarck'' was the first of two s built for Nazi Germany's . Named after Chancellor Otto von Bismarck, the ship was Keel laying, laid down at the Blohm & Voss shipyard in Hamburg in July 1936 and ceremonial ship launching, launched in February 1939. Work was completed in August 1940, when she was ship commissioning, commissioned into the German fleet. ''Bismarck'' and her sister ship were the largest battleships ever built by Germany, and two of the largest built by any European power. In the course of the warship's eight-month career, ''Bismarck'' conducted only one offensive operation that lasted eight days in May 1941, codenamed . The ship, along with the heavy cruiser , was to break into the Atlantic Ocean and raid Allied shipping from North America to Great Britain. The two ships were detected several times off Scandinavia, and British naval units were deployed to block their route. At the Battle of the Denmark Strait, the battlecruiser initially engaged ''Prinz Eugen'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strobe Light
A strobe light or stroboscopic lamp, commonly called a strobe, is a device used to produce regular flashes of light. It is one of a number of devices that can be used as a stroboscope. The word originated from the Ancient Greek ('), meaning "act of whirling". A typical commercial strobe light has a flash energy in the region of 10 to 150 joules, and discharge times as short as a few milliseconds, often resulting in a flash power of several kilowatts. Larger strobe lights can be used in “continuous” mode, producing extremely intense illumination. The light source is commonly a xenon flash lamp, or ''flashtube'', which has a complex spectrum and a color temperature of approximately 5,600 kelvins. To obtain colored light, colored gels may be used. Scientific explanation of flashtubes Strobe lights usually use flashtubes with energy supplied from a capacitor, an energy storage device much like a battery, but capable of charging and releasing energy much faster. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Incandescent Light
An incandescent light bulb, also known as an incandescent lamp or incandescent light globe, is an electric light that produces illumination by Joule heating a #Filament, filament until it incandescence, glows. The filament is enclosed in a glass bulb that is either vacuum, evacuated or filled with inert gas to protect the filament from oxidation. Electric current is supplied to the filament by terminals or wires embedded in the glass. A bulb socket provides mechanical support and electrical connections. Incandescent bulbs are manufactured in a wide range of sizes, light output, and voltage ratings, from 1.5 volts to about 300 volts. They require no external Regulator (automatic control), regulating equipment, have low manufacturing costs, and work equally well on either alternating current or direct current. As a result, the incandescent bulb became widely used in household and commercial lighting, for portable lighting such as table lamps, car headlamps, and flashlights, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acoustically Navigated Geological Underwater Survey
The Acoustically Navigated Geological Underwater Survey (ANGUS) was a deep-towed still-camera sled operated by the Woods Hole Oceanographic Institute (WHOI) in the early 1970s. It was the first unmanned research vehicle made by WHOI. ANGUS was encased in a large steel frame designed to explore rugged volcanic terrain and able to withstand high impact collisions. It was fitted with three 35 mm color cameras with of film. Together, its three cameras were able to photograph a strip of the sea floor with a width up to . Each camera was equipped with strobe lights allowing them to photograph the ocean floor from above. On the bottom of the body was a downward-facing sonar system to monitor the sled's height above the ocean floor. It was capable of working in depths up to and could therefore reach roughly 98% of the sea floor. ANGUS could remain in the deep ocean for work sessions of 12 to 14 hours at a time, taking up to 16,000 photographs in one session. ANGUS was often used to sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceanographic Instrumentation
Oceanography (), also known as oceanology, sea science, ocean science, and marine science, is the scientific study of the ocean, including its physics, chemistry, biology, and geology. It is an Earth science, which covers a wide range of topics, including ocean currents, waves, and geophysical fluid dynamics; fluxes of various chemical substances and physical properties within the ocean and across its boundaries; ecosystem dynamics; and plate tectonics and seabed geology. Oceanographers draw upon a wide range of disciplines to deepen their understanding of the world’s oceans, incorporating insights from astronomy, biology, chemistry, geography, geology, hydrology, meteorology and physics. History Early history Humans first acquired knowledge of the waves and currents of the seas and oceans in pre-historic times. Observations on tides were recorded by Aristotle and Strabo in 384–322 BC. Early exploration of the oceans was primarily for cartography and mainly limited t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
