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Discovery One
The United States Spacecraft ''Discovery One'' is a fictional spaceship featured in the first two novels of the ''Space Odyssey'' series by Arthur C. Clarke and in the films ''2001: A Space Odyssey (film), 2001: A Space Odyssey'' (1968) directed by Stanley Kubrick and ''2010 (film), 2010: The Year We Make Contact'' (1984) directed by Peter Hyams. The ship is a nuclear-powered Interplanetary spaceflight, interplanetary spaceship, crewed by two men and controlled by the Artificial intelligence, AI on-board computer HAL 9000. The ship is destroyed in the second novel and makes no further appearances. Clarke and Kubrick developed the first novel and film in parallel, but there were some differences to suit the different media. Kubrick dropped the cooling fins of the ship, fearing they would be interpreted as wings. The itinerary of ''Discovery One'' in the book is from Earth orbit via gravitational slingshot around Jupiter to Saturn and parking orbit around the moon Iapetus (moon), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extravehicular Activity
Extravehicular activity (EVA) is any activity done by an astronaut in outer space outside a spacecraft. In the absence of a breathable Earthlike atmosphere, the astronaut is completely reliant on a space suit for environmental support. EVA includes ''spacewalks'' and lunar or planetary surface exploration (commonly known from 1969 to 1972 as ''moonwalks''). In a stand-up EVA (SEVA), an astronaut stands through an open hatch but does not fully leave the spacecraft. EVA has been conducted by the Soviet Union/Russia, the United States, Canada, the European Space Agency and China. On March 18, 1965, Alexei Leonov became the first human to perform a spacewalk, exiting the Voskhod 2 capsule for 12 minutes and 9 seconds. On July 20, 1969, Neil Armstrong became the first human to perform a moonwalk, outside his lunar lander on Apollo 11 for 2 hours and 31 minutes. On the last three Moon missions, astronauts also performed deep-space EVAs on the return to Earth, to retrieve film ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discovery One
The United States Spacecraft ''Discovery One'' is a fictional spaceship featured in the first two novels of the ''Space Odyssey'' series by Arthur C. Clarke and in the films ''2001: A Space Odyssey (film), 2001: A Space Odyssey'' (1968) directed by Stanley Kubrick and ''2010 (film), 2010: The Year We Make Contact'' (1984) directed by Peter Hyams. The ship is a nuclear-powered Interplanetary spaceflight, interplanetary spaceship, crewed by two men and controlled by the Artificial intelligence, AI on-board computer HAL 9000. The ship is destroyed in the second novel and makes no further appearances. Clarke and Kubrick developed the first novel and film in parallel, but there were some differences to suit the different media. Kubrick dropped the cooling fins of the ship, fearing they would be interpreted as wings. The itinerary of ''Discovery One'' in the book is from Earth orbit via gravitational slingshot around Jupiter to Saturn and parking orbit around the moon Iapetus (moon), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coriolis Force
In physics, the Coriolis force is an inertial or fictitious force that acts on objects in motion within a frame of reference that rotates with respect to an inertial frame. In a reference frame with clockwise rotation, the force acts to the left of the motion of the object. In one with anticlockwise (or counterclockwise) rotation, the force acts to the right. Deflection of an object due to the Coriolis force is called the Coriolis effect. Though recognized previously by others, the mathematical expression for the Coriolis force appeared in an 1835 paper by French scientist Gaspard-Gustave de Coriolis, in connection with the theory of water wheels. Early in the 20th century, the term ''Coriolis force'' began to be used in connection with meteorology. Newton's laws of motion describe the motion of an object in an inertial (non-accelerating) frame of reference. When Newton's laws are transformed to a rotating frame of reference, the Coriolis and centrifugal accelerations appe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zero-g
Weightlessness is the complete or near-complete absence of the sensation of weight. It is also termed zero gravity, zero G-force, or zero-G. Weight is a measurement of the force on an object at rest in a relatively strong gravitational field (such as on the surface of the Earth). These weight-sensations originate from contact with supporting floors, seats, beds, scales, and the like. A sensation of weight is also produced, even when the gravitational field is zero, when contact forces act upon and overcome a body's inertia by mechanical, non-gravitational forces- such as in a centrifuge, a rotating space station, or within an accelerating vehicle. When the gravitational field is non-uniform, a body in free fall experiences tidal effects and is not stress-free. Near a black hole, such tidal effects can be very strong. In the case of the Earth, the effects are minor, especially on objects of relatively small dimensions (such as the human body or a spacecraft) and the overall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fred Astaire
Fred Astaire (born Frederick Austerlitz; May 10, 1899 – June 22, 1987) was an American dancer, choreographer, actor, and singer. He is often called the greatest dancer in Hollywood film history. Astaire's career in stage, film, and television spanned 76 years. He starred in more than 10 Broadway and West End musicals, made 31 musical films, four television specials, and numerous recordings. As a dancer, he was known for his uncanny sense of rhythm, creativity, and tireless perfectionism. Astaire's most memorable dancing partnership was with Ginger Rogers, whom he co-starred with in 10 Hollywood musicals during the classic age of Hollywood cinema. Astaire and Rogers starred together in ''Top Hat'' (1935), '' Swing Time'' (1936), and ''Shall We Dance'' (1937). Astaire's fame grew in films like ''Holiday Inn'' (1942), '' Easter Parade'' (1948), '' The Band Wagon'' (1953), '' Funny Face'' (1957), and ''Silk Stockings'' (1957). The American Film Institute named Astaire the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Wedding
''Royal Wedding'' is a 1951 American musical comedy film directed by Stanley Donen, and starring Fred Astaire and Jane Powell, with music by Burton Lane and lyrics by Alan Jay Lerner. Set in 1947 London at the time of the wedding of Princess Elizabeth and Philip Mountbatten, the film follows an American brother-sister song and dance duo who, while performing, each fall in love–he, with a female dancer, and she, with an impoverished but well-connected nobleman. The film marked Donen's second directorial feature. It was released as ''Wedding Bells'' in the United Kingdom. ''Royal Wedding'' is one of several MGM musicals that entered the public domain because the studio failed to renew the copyright registration in the 28th year after its publication. Plot The story sees brother and sister Tom and Ellen Bowen as stars of a show ''Every Night at Seven'', a Broadway success. They are persuaded to take the show to London, capitalizing on the imminent royal wedding of Princess Eli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamster Wheel
A hamster wheel or running wheel is an exercise device used primarily by hamsters and other rodents, but also by other cursorial animals when given the opportunity. Most of these devices consist of a runged or ridged wheel held on a stand by a single or pair of stub axles. Hamster wheels allow rodents to run even when their space is confined. The earliest dated use of the term "hamster wheel", located by the Oxford English Dictionary, is in a 1949 newspaper advertisement. Preferences Choice tests with Syrian hamsters (''Mesocricetus auratus'') have shown that they prefer larger wheels; the animals chose a wheel diameter of 35 cm (14 in) over 23 cm (9 in), which itself was preferred over 17.5 cm (7 in). Hamsters showed no preference between a relatively uniform running surface made of plastic mesh and a surface made of rungs spaced 9 mm apart, although they did prefer the mesh compared to rungs spaced 12 mm apart, most likely because of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History (American TV Channel)
History (formerly The History Channel from January 1, 1995 to February 15, 2008, stylized as HISTORY) is an American pay television television network, network and flagship channel owned by A&E Networks, a joint venture between Hearst Communications and the The Walt Disney Company, Disney General Entertainment Content division of the Walt Disney Company. The network was originally focused on history-based as well as social and science documentaries. During the late 2000s, History devolved into reality television programming. In addition to this change in format, the network has been criticized by many scientists, historians, and skeptics for broadcasting pseudo-documentaries and pseudoscientific, unsubstantiated, sensational investigative programming. As of February 2015, around 96,149,000 American households (82.6% of households with television) receive the network's flagship channel, History. International localized versions of History are available, in various forms, in India ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artificial Gravity
Artificial gravity is the creation of an inertial force that mimics the effects of a gravitational force, usually by rotation. Artificial gravity, or rotational gravity, is thus the appearance of a centrifugal force in a rotating frame of reference (the transmission of centripetal acceleration via normal force in the non-rotating frame of reference), as opposed to the force experienced in linear acceleration, which by the equivalence principle is indistinguishable from gravity. In a more general sense, "artificial gravity" may also refer to the effect of linear acceleration, e.g. by means of a rocket engine. Rotational simulated gravity has been used in simulations to help astronauts train for extreme conditions. Rotational simulated gravity has been proposed as a solution in human spaceflight to the adverse health effects caused by prolonged weightlessness. However, there are no current practical outer space applications of artificial gravity for humans due to concerns ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Lost Worlds Of 2001
''The Lost Worlds of 2001'' is a 1972 book by English writer Arthur C. Clarke, published as an accompaniment to the novel '' 2001: A Space Odyssey''. The book consists in part of behind-the-scenes notes from Clarke concerning scriptwriting (and rewriting), as well as production issues. The core of the book, however, comprises excerpts from the proto-novel and an early screenplay that did not make it into the final version. Alternative settings for launch preparation, the EVA scene where astronaut Frank Poole is lost, and varying dialogues concerning the HAL 9000 HAL 9000 is a fictional artificial intelligence character and the main antagonist in Arthur C. Clarke's ''Space Odyssey'' series. First appearing in the 1968 film '' 2001: A Space Odyssey'', HAL ( Heuristically programmed ALgorithmic computer ... unit are among the elements and scenes featured. Also included is the original 1948 short story " The Sentinel", the germ of the film's script. References External lin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Pulse Propulsion
Nuclear pulse propulsion or external pulsed plasma propulsion is a hypothetical method of spacecraft propulsion that uses nuclear explosions for thrust. It originated as Project ''Orion'' with support from DARPA, after a suggestion by Stanislaw Ulam in 1947. Newer designs using inertial confinement fusion have been the baseline for most later designs, including Project ''Daedalus'' and Project ''Longshot''. History Los Alamos Calculations for a potential use of this technology were made at the laboratory from and toward the close of the 1940s to the mid 1950s. Project Orion Project Orion was the first serious attempt to design a nuclear pulse rocket. A design was formed at General Atomics during the late 1950s and early 1960s, with the idea of reacting small directional nuclear explosives utilizing a variant of the Teller–Ulam two-stage bomb design against a large steel pusher plate attached to the spacecraft with shock absorbers. Efficient directional explosives maximi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Project Orion (nuclear Propulsion)
Project Orion was a study conducted between the 1950s and 1960s by the United States Air Force, DARPA, and NASA for the purpose of identifying the efficacy of a starship directly propelled by a series of explosions of atomic bombs behind the craft—nuclear pulse propulsion. Early versions of this vehicle were proposed to take off from the ground; later versions were presented for use only in space. Six non-nuclear tests were conducted using models. The project was eventually abandoned for multiple reasons, including the Partial Test Ban Treaty, which banned nuclear explosions in space, and concerns over nuclear fallout. The idea of rocket propulsion by combustion of explosive substance was first proposed by Russian explosives expert Nikolai Kibalchich in 1881, and in 1891 similar ideas were developed independently by German engineer Hermann Ganswindt. Robert A. Heinlein mentions powering spaceships with nuclear bombs in his 1940 short story "Blowups Happen". Real life propos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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