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Pacific Science Center
Pacific Science Center is an independent, non-profit science center in Seattle with a mission to ignite curiosity and fuel a passion for discovery, experimentation, and critical thinking. Pacific Science Center serves more than 1 million people each year at its campus adjacent to Seattle Center, at the Mercer Slough Environmental Education Center in Bellevue, Washington, and in communities and classrooms across the state of Washington. Organization Pacific Science Center sits on of land at the southwest corner of Seattle Center. A satellite campus, the Mercer Slough Environmental Education Center, is a collaboration between Pacific Science Center and the City of Bellevue, Washington with educational programming for all ages about environmental stewardship, wetland ecology and nature awareness. Pacific Science Center also offers year-round youth, teen, family and adult programs, including summer camps in various Puget Sound locations, science-themed 21+ events and research weekend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Century 21 Exposition
The Century 21 Exposition (also known as the Seattle World's Fair) was a world's fair held April 21, 1962, to October 21, 1962, in Seattle, Washington (state), Washington, United States.Guide to the Seattle Center Grounds Photograph Collection: April, 1963 , University of Washington Libraries Special Collections. Accessed online October 18, 2007. Nearly 10 million people attended the fair.Joel Connelly Century 21 introduced Seattle to its future , ''Seattle Post-Intelligencer'', April 16, 2002. Accessed online October 18, 2007. As planne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laser Show
A laser lighting display or laser light show involves the use of laser light to entertain an audience. A laser light show may consist only of projected laser beams set to music, or may accompany another form of entertainment, typically musical performances. Laser light is useful in entertainment because the coherent nature of laser light allows a narrow beam to be produced, which allows the use of optical scanning to draw patterns or images on walls, ceilings or other surfaces including theatrical smoke and fog without refocusing for the differences in distance, as is common with video projection. This inherently more focused beam is also extremely visible, and is often used as an effect. Sometimes the beams are "bounced" to different positions with mirrors to create laser sculptures. Function Scanning Laser scanners reflect the laser beam on small mirrors which are mounted on galvanometers to which a control voltage is applied. The beam is deflected a certain amoun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronaut
An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a human spaceflight program to serve as a commander or crew member aboard a spacecraft. Although generally reserved for professional space travelers, the term is sometimes applied to anyone who travels into space, including scientists, politicians, journalists, and tourists. "Astronaut" technically applies to all human space travelers regardless of nationality. However, astronauts fielded by Russia or the Soviet Union are typically known instead as cosmonauts (from the Russian "kosmos" (космос), meaning "space", also borrowed from Greek). Comparatively recent developments in crewed spaceflight made by China have led to the rise of the term taikonaut (from the Mandarin "tàikōng" (), meaning "space"), although its use is somewhat informal and its origin is unclear. In China, the People's Liberation Army Astronaut Corps astronauts and their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Module
The Apollo Lunar Module (LM ), originally designated the Lunar Excursion Module (LEM), was the lunar lander spacecraft that was flown between lunar orbit and the Moon's surface during the United States' Apollo program. It was the first crewed spacecraft to operate exclusively in the airless vacuum of space, and remains the only crewed vehicle to land anywhere beyond Earth. Structurally and aerodynamically incapable of flight through Earth's atmosphere, the two-stage lunar module was ferried to lunar orbit attached to the Apollo command and service module (CSM), about twice its mass. Its crew of two flew the complete lunar module from lunar orbit to the Moon's surface. During takeoff, the spent descent stage was used as a launch pad for the ascent stage which then flew back to the command module, after which it was also discarded. Overseen by Grumman, the LM's development was plagued with problems that delayed its first uncrewed flight by about ten months and its first crewed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1964-65 New York World's Fair
The 1964–1965 New York World's Fair was a world's fair that held over 140 pavilions and 110 restaurants, representing 80 nations (hosted by 37), 24 US states, and over 45 corporations with the goal and the final result of building exhibits or attractions at Flushing Meadows–Corona Park in Queens, New York City. The immense fair covered on half the park, with numerous pools or fountains, and an amusement park with rides near the lake. However, the fair did not receive official support or approval from the Bureau of International Expositions (BIE). Hailing itself as a "universal and international" exposition, the fair's theme was "Peace Through Understanding", dedicated to "Man's Achievement on a Shrinking Globe in an Expanding Universe". American companies dominated the exposition as exhibitors. The theme was symbolized by a 12-story-high, stainless-steel model of the Earth called the Unisphere, built on the foundation of the Perisphere from the 1939 World's Fair.Gordon, John ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bean Machine
The Galton board, also known as the Galton box or quincunx or bean machine, is a device invented by Sir Francis Galton to demonstrate the central limit theorem, in particular that with sufficient sample size the binomial distribution approximates a normal distribution. Among its applications, it afforded insight into regression to the mean or "reversion to mediocrity". Description The Galton board consists of a vertical board with interleaved rows of pegs. Beads are dropped from the top and, when the device is level, bounce either left or right as they hit the pegs. Eventually they are collected into bins at the bottom, where the height of bead columns accumulated in the bins approximate a bell curve. Overlaying Pascal's triangle onto the pins shows the number of different paths that can be taken to get to each bin. Large-scale working models of this device created by Charles and Ray Eames can be seen in the '' Mathematica: A World of Numbers... and Beyond'' exhibits permanent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metric System
The metric system is a system of measurement that succeeded the Decimal, decimalised system based on the metre that had been introduced in French Revolution, France in the 1790s. The historical development of these systems culminated in the definition of the International System of Units (SI) in the mid-20th century, under the oversight of an international standards body. Adopting the metric system is known as ''metrication''. The historical evolution of metric systems has resulted in the recognition of several principles. Each of the fundamental dimensions of nature is expressed by a single base unit (measurement), base unit of measure. The definition of base units has increasingly been realisation (metrology), realised from natural principles, rather than by copies of physical artefacts. For quantities derived from the fundamental base units of the system, units SI derived unit, derived from the base units are used—e.g., the square metre is the derived unit for area, a qu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevrolet Chevette
The Chevrolet Chevette is a front-engine, rear-drive subcompact manufactured and marketed by Chevrolet for model years 1976–1987 as a three-door or five-door hatchback. Introduced in September 1975, the Chevette superseded the Vega as Chevrolet's entry-level subcompact, and sold 2.8 million units over 12 years. The Chevette was the best-selling small car in the U.S. for model years 1979 and 1980. The Chevette employed General Motors' global T platform. Worldwide, GM manufactured and marketed more than 7 million T-cars – rebadged variants using the T platform – including the Pontiac Acadian in Canada, Pontiac T1000/1000 in the United States (1981–1987), K-180 in Argentina, Vauxhall Chevette, Opel Kadett, Isuzu Gemini, Holden Gemini, and as a coupe utility (pickup), the Chevy 500. A T-car variant remained in production in South America through 1998. Introduced on a full-color nationwide campaign in 140–150 of the country's largest daily papers, the ''New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soap Bubble
A soap bubble is an extremely thin film of soap or detergent and water enclosing air that forms a hollow sphere with an iridescent surface. Soap bubbles usually last for only a few seconds before bursting, either on their own or on contact with another object. They are often used for children's enjoyment, but they are also used in artistic performances. Assembling many bubbles results in foam. When light shines onto a bubble it appears to change colour. Unlike those seen in a rainbow, which arise from differential refraction, the colours seen in a soap bubble arise from light wave interference, reflecting off the front and back surfaces of the thin soap film. Depending on the thickness of the film, different colours interfere constructively and destructively. Mathematics Soap bubbles are physical examples of the complex mathematical problem of minimal surface. They will assume the shape of least surface area possible containing a given volume. A true minimal surface is more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A World Of Numbers
A, or a, is the first letter and the first vowel of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''a'' (pronounced ), plural ''aes''. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version can be written in two forms: the double-storey a and single-storey ɑ. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type. In English grammar, " a", and its variant " an", are indefinite articles. History The earliest certain ancestor of "A" is aleph (also written 'aleph), the first letter of the Phoenician alphabet, which consisted entirely of consonants (for that reason, it is also called an abjad to distinguish it fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KCTS-TV
KCTS-TV (channel 9) is a PBS member television station in Seattle, Washington, United States, owned by Cascade Public Media. Its studios are located at the northeast corner of Seattle Center adjacent to the Space Needle, and its transmitter is located on Capitol Hill in Seattle. KCTS-TV is the primary PBS member station for the Seattle– Tacoma market alongside Tacoma-licensed KBTC-TV (channel 28), owned by Bates Technical College; through PBS' Program Differentiation Plan, KCTS-TV carries the majority (75%) of the network's programs, with KBTC-TV carrying the remaining 25%. Originally owned and operated by the University of Washington, KCTS-TV became a community licensee in 1987. The station's ownership merged with Crosscut.com to form Cascade Public Media in 2016. KYVE (channel 47) in Yakima operates as a semi-satellite of KCTS-TV, serving as the PBS member station for the western portion of the Yakima– Tri-Cities market. KYVE's transmitter is located on Ahtanum Ridge. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dixy Lee Ray
Dixy Lee Ray (September 3, 1914 – January 2, 1994) was an American politician who served as the 17th governor of Washington from 1977 to 1981. Variously described as idiosyncratic and "ridiculously smart," she was the state's first female governor and was in office during the 1980 eruption of Mount St. Helens. She was a supporter of atomic energy. A graduate of Mills College and Stanford University, where she earned a doctorate in biology, Ray became an associate professor at the University of Washington in 1957. She was chief scientist aboard the schooner SS ''Te Vega'' during the International Indian Ocean Expedition. Under her guidance, the nearly bankrupt Pacific Science Center was transformed from a traditional, exhibit-oriented museum to an interactive learning center, and returned to solvency. In 1973, Ray was appointed chairman of the United States Atomic Energy Commission (AEC) by President Richard Nixon. Under her leadership, research and development were separated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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