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Keith Henson
Howard Keith Henson (born 1942) is an American electrical engineer and writer. Henson writes on subjects including space engineering, space law ( Moon treaty), memetics, cryonics, evolutionary psychology, and the physical limitations of Transhumanism. In 1975, Henson founded the L5 Society with his then-wife Carolyn Meinel to promote space colonization. In 1987 the L5 Society merged with the National Space Institute to form the National Space Society. Early influences Henson was raised in a military family and he attended seven schools before 7th grade. His father, Lt. Col. Howard W. Henson (1909–2001), was a decorated (Bronze Star and Legion of Merit) US Army officer who spent much of his career in Army Intelligence. The science-fiction author Robert A. Heinlein heavily influenced his early life. Henson graduated from Prescott High School shortly after his father retired, before attending the University of Arizona and receiving a degree in electrical engineering. Univ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Four Corners region with Utah to the north, Colorado to the northeast, and New Mexico to the east; its other neighboring states are Nevada to the northwest, California to the west and the Mexican states of Sonora and Baja California to the south and southwest. Arizona is the 48th state and last of the contiguous states to be admitted to the Union, achieving statehood on February 14, 1912. Historically part of the territory of in New Spain, it became part of independent Mexico in 1821. After being defeated in the Mexican–American War, Mexico ceded much of this territory to the United States in 1848. The southernmost portion of the state was acquired in 1853 through the Gadsden Purchase. Southern Arizona is known for its desert cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bronze Star
The Bronze Star Medal (BSM) is a United States Armed Forces decoration awarded to members of the United States Armed Forces for either heroic achievement, heroic service, meritorious achievement, or meritorious service in a combat zone. When the medal is awarded by the Army, Air Force, or Space Force for acts of valor in combat, the "V" device is authorized for wear on the medal. When the medal is awarded by the Navy, Marine Corps, or Coast Guard for acts of valor or meritorious service in combat, the Combat "V" is authorized for wear on the medal. Officers from the other Uniformed Services of the United States are eligible to receive this award, as are foreign soldiers who have served with or alongside a service branch of the United States Armed Forces. Civilians serving with U.S. military forces in combat are also eligible for the award. For example, UPI reporter Joe Galloway was awarded the Bronze Star with "V" device during the Vietnam War for rescuing a badly wounde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RC Oscillator
Linear electronic oscillator circuits, which generate a sinusoidal output signal, are composed of an amplifier and a frequency selective element, a filter. A linear oscillator circuit which uses an RC network, a combination of resistors and capacitors, for its frequency selective part is called an RC oscillator. Description RC oscillators are a type of feedback oscillator; they consist of an amplifying device, a transistor, vacuum tube, or op-amp, with some of its output energy fed back into its input through a network of resistors and capacitors, an RC network, to achieve positive feedback, causing it to generate an oscillating sinusoidal voltage. They are used to produce lower frequencies, mostly audio frequencies, in such applications as audio signal generators and electronic musical instruments. At radio frequencies, another type of feedback oscillator, the LC oscillator is used, but at frequencies below 100 kHz the size of the inductors and capacitors needed for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tucson, Arizona
, "(at the) base of the black ill , nicknames = "The Old Pueblo", "Optics Valley", "America's biggest small town" , image_map = , mapsize = 260px , map_caption = Interactive map outlining Tucson , image_map1 = File:Pima County Incorporated and Unincorporated areas Tucson highlighted.svg , mapsize1 = 250px , map_caption1 = Location within Pima County , pushpin_label = Tucson , pushpin_map = USA Arizona#USA , pushpin_map_caption = Location within Arizona##Location within the United States , subdivision_type = Country , subdivision_type1 = State , subdivision_type2 = County , subdivision_name = United States , subdivision_name1 = Arizona , subdivision_name2 = Pima , established_title = Founded , established_date = August 20, 1775 , established_title1 = Incorporated , e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing technology and education technology products including calculators, microcontrollers, and multi-core processors. The company holds 45,000 patents worldwide as of 2016. Texas Instruments emerged in 1951 after a reorganization of Geophysical Service Incorporated, a company founded in 1930 that manufactured equipment for use in the seismic industry, as well as defense electronics. TI produced the world's first commercial silicon transistor in 1954, and the same year designed and manufactured t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burr-Brown
The Burr-Brown Corporation was an American technology company in Tucson, Arizona, which designed, manufactured, and marketed a broad line of proprietary, standard, high-performance, analog and mixed-signal integrated circuits (ICs) used in electronic signal processing. The company's products were used in a wide range of applications: industrial process and control, including nuclear power generation, telecommunications, test and measurement, medical and scientific instrumentation, medical imaging, digital audio and video, personal computing and multimedia. In September 2000, Texas Instruments acquired the company for US$7.6 billion. History In 1983, the company reincorporated in Delaware and went public with stock trading on NASDAQ under the symbol BBRC. The company was incorporated in Tucson, Arizona in 1956 by founders Page Burr (Princeton 1944 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Druid
A druid was a member of the high-ranking class in ancient Celtic cultures. Druids were religious leaders as well as legal authorities, adjudicators, lorekeepers, medical professionals and political advisors. Druids left no written accounts. While they were reported to have been literate, they are believed to have been prevented by doctrine from recording their knowledge in written form. Their beliefs and practices are attested in some detail by their contemporaries from other cultures, such as the Romans and the Greeks. The earliest known references to the druids date to the 4th century BCE. The oldest detailed description comes from Julius Caesar's ''Commentarii de Bello Gallico'' (50s BCE). They were described by other Roman writers such as Cicero, Cicero (44) I.XVI.90. Tacitus, and Pliny the Elder. Following the Roman invasion of Gaul, the druid orders were suppressed by the Roman government under the 1st-century CE emperors Tiberius and Claudius, and had disappeare ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peru
, image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Firm and Happy for the Union" , national_anthem = "National Anthem of Peru" , march = "March of Flags" , image_map = PER orthographic.svg , map_caption = , image_map2 = , capital = Lima , coordinates = , largest_city = capital , official_languages = Peruvian Spanish, Spanish , languages_type = Co-official languages , languages = , ethnic_groups = , ethnic_groups_year = 2017 , demonym = Peruvians, Peruvian , government_type = Unitary state, Unitary Semi-presidential system, semi-presidential republic , leader_title1 = President of Peru, President ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Induced Polarization
Induced polarization (IP) is a geophysical imaging technique used to identify the electrical chargeability of subsurface materials, such as ore. The polarization effect was originally discovered by Conrad Schlumberger when measuring the resistivity of rock. The survey method is similar to electrical resistivity tomography (ERT), in that an electric current is transmitted into the subsurface through two electrodes, and voltage is monitored through two other electrodes. Induced polarization is a geophysical method used extensively in mineral exploration and mine operations. Resistivity and IP methods are often applied on the ground surface using multiple four-electrode sites. In an IP survey, in addition to resistivity measurement, capacitive properties of the subsurface materials are determined as well. As a result, IP surveys provide additional information about the spatial variation in lithology and grain-surface chemistry. The IP survey can be made in time-domain and frequenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geophysics
Geophysics () is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. The term ''geophysics'' sometimes refers only to solid earth applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations and pure scientists use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial physics; and analogous problems associated with the Moon and other planets. Gutenberg, B., 1929, Lehrbuch der Geophysik. Leipzig. Berlin (Gebruder Borntraeger). Runcorn, S.K, (editor-in-chief), 1967, International ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ed Regis (author)
Edward Regis, Jr (born 1944) — known as Ed Regis — is an American philosopher, educator and author. He specializes in books and articles about science, philosophy and intelligence. His topics have included nanotechnology, transhumanism and biological warfare. His articles have appeared in several scientific magazines, including ''Scientific American'', '' Harper's Magazine'', ''Wired'', ''Discover'', ''The New York Times'', ''Journal of Philosophy'', ''Ethics'' and the '' American Philosophical Quarterly''. Personal Regis was born in 1944. He received a Ph.D in Philosophy from New York University. Regis and his wife live in the mountains near Camp David, in Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to .... Works Editor * * Original works * * * * * * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prescott High School (Arizona)
Prescott High School is a public high school located in the city of Prescott, Arizona. It is the only high school in the Prescott Unified School District. Historically, Prescott High School drew students from various adjacent school districts, mostly in Prescott Valley (Humboldt Unified School District) and Chino Valley, Arizona ( Chino Valley Unified School District); those districts later established their own high schools. Service area In addition to almost all of Prescott it serves most of Williamson and sections of Prescott Valley. the district takes in high school students from the Hillside Elementary School District, Kirkland Elementary School District, and Skull Valley School District, as it is required to under law. It also takes students from the Yarnell Elementary School District. Additionally it took high school students from the Walnut Grove Elementary School District, until that district dissolved in 2021. Academics and programs PHS offers a solid academic pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
