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Orgov Radio-Optical Telescope
The Orgov Radio-Optical Telescope, also known as ROT54 or the Herouni Mirror Radio Telescope, is a radio telescope in Orgov, Armenia. It was built between 1975-1985 and was active between 1986-1990 before its use was halted. Subsequently, many attempts have been made to restore and restart the ROT54. It was registered as a historical and culturally significant Armenian monument in 2002 (monument N: 2.114.19.11.). Specifications The telescope is located at the RRI Aragats Scientific Centre in Orgov, Armenia. It is on Mount Aragats, at a height of . The radio telescope has a diameter of . It is hemispherical, and fixed to the ground, with a movable secondary mirror with a diameter of . This provides a useful diameter of . It has a surface accuracy around 70/100 μm, giving an operating wavelength of 30-3mm (10-100 GHz), and was originally designed to observe down to 1 mm (300 GHz). The optical telescope has a mirror, with a focal length. History Developm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Telescope
A radio telescope is a specialized antenna and radio receiver used to detect radio waves from astronomical radio sources in the sky. Radio telescopes are the main observing instrument used in radio astronomy, which studies the radio frequency portion of the electromagnetic spectrum emitted by astronomical objects, just as optical telescopes are the main observing instrument used in traditional optical astronomy which studies the light wave portion of the spectrum coming from astronomical objects. Unlike optical telescopes, radio telescopes can be used in the daytime as well as at night. Since astronomical radio sources such as planets, stars, nebulas and galaxies are very far away, the radio waves coming from them are extremely weak, so radio telescopes require very large antennas to collect enough radio energy to study them, and extremely sensitive receiving equipment. Radio telescopes are typically large parabolic ("dish") antennas similar to those employed in trackin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orgov
Orgov ( hy, Օրգով) is a village in the Ashtarak Municipality of the Aragatsotn Province of Armenia. Orgov is home to the Orgov Radio-Optical Telescope The Orgov Radio-Optical Telescope, also known as ROT54 or the Herouni Mirror Radio Telescope, is a radio telescope in Orgov, Armenia. It was built between 1975-1985 and was active between 1986-1990 before its use was halted. Subsequently, many a ... and remains of a Bronze Age fort. References *Report of the results of the 2001 Armenian Census Populated places in Aragatsotn Province {{Aragatsotn-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RRI Aragats Scientific Centre
RRI may refer to: Radio * Radio Republik Indonesia, the Indonesian public radio network * Radio Romania International ** RRI 1 ** RRI 2 Other uses * Raman Research Institute, Bangalore, India * RepRisk Index, a proprietary risk metric * Responsible Research and Innovation, notion used by the European Union * Rights and Resources Initiative The Rights and Resources Initiative (RRI) is a non-governmental organization working to encourage forest tenure and policy reforms and the transformation of the forest economy so that business reflects local development agendas and supports loca ..., an international coalition of organizations promoting land tenure reform for poor communities around the world * RRI Energy, former name of GenOn Energy * Road Routing Information within Integrated Transport Network data provided by Ordnance Survey * RRI Rhein Ruhr International, Consulting Engineers {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Aragats
Mount Aragats ( hy, Արագած, ) is an isolated four-peaked volcano massif in Armenia. Its northern summit, at above sea level, is the highest point of the Lesser Caucasus and Armenia. It is also one of the highest points in the Armenian Highlands. The Aragats massif is surrounded by Kasagh River on the east, Akhurian River on the west, Ararat plain on the south and Shirak plain on the north. The circumference of the massif is around , and covers an area of or around of Armenia's total area. of the massif is located above . Etymology and names According to Armenian tradition, Aragats originates from the words Արա ''Ara'' + գահ ''gah'', which translates to "Ara's throne". Ara refers to the legendary hero Ara the Beautiful. Aragats was mentioned by the early medieval historian Movses Khorenatsi, who in his ''History of Armenia'' claims that the mountain is named after Aramaneak, the son of Hayk, the legendary patriarch of the Armenian people. Aramaneak called his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal Length
The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power. A positive focal length indicates that a system converges light, while a negative focal length indicates that the system diverges light. A system with a shorter focal length bends the rays more sharply, bringing them to a focus in a shorter distance or diverging them more quickly. For the special case of a thin lens in air, a positive focal length is the distance over which initially collimated (parallel) rays are brought to a focus, or alternatively a negative focal length indicates how far in front of the lens a point source must be located to form a collimated beam. For more general optical systems, the focal length has no intuitive meaning; it is simply the inverse of the system's optical power. In most photography and all telescopy, where the subject is essentially infinitely far away, longer focal length (lower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Herouni
Paris Misakovich Herouni (, December 17, 1933 – December 5, 2008) was a Soviet and Armenian physicist and engineer. He was a member of the Armenian National Academy of Sciences in the fields of radio-physics, radio-engineering, and radio-astronomy and the head of the Antenna Systems chair, which he founded, at the National Polytechnic University of Armenia and Radio Physics Research Institute (RRI). In 1986, he was awarded the USSR State Prize. Biography Herouni was born in Yerevan, Armenia, on December 17, 1933. His father was from Hadjin and a survivor of the Armenian genocide. Upon completion of his undergraduate studies in Yerevan, Herouni attended the Moscow Power Engineering Institute, where he earned his graduate degree in radio technology in 1957. He earned his doctorate of philosophy in radio techniques from the same institution in 1965. Herouni became an associate professor in 1968 and a full professor in 1983. Because of his many scientific discoveries, Herouni re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sergei Korolev
Sergei Pavlovich Korolev (russian: Сергей Павлович Королёв, Sergey Pavlovich Korolyov, sʲɪrˈɡʲej ˈpavləvʲɪtɕ kərɐˈlʲɵf, Ru-Sergei Pavlovich Korolev.ogg; ukr, Сергій Павлович Корольов, Serhiy Pavlovych Korol'ov, sɛrˈɦij ˈpavlovɪtʃ koroˈlʲou̯) 14 January 1966) was a lead Soviet rocket engineer and spacecraft designer during the Space Race between the United States and the Soviet Union in the 1950s and 1960s. He is regarded by many as the father of practical astronautics. He was involved in the development of the R-7 Rocket, Sputnik 1, launching Laika, Sputnik 3, the first human-made object to make contact with another celestial body, Belka and Strelka, the first human being, Yuri Gagarin, into space, Voskhod 1, and the first person, Alexei Leonov, to conduct a spacewalk. Although Korolev trained as an aircraft designer, his greatest strengths proved to be in design integration, organization and strateg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drilling And Blasting
Drilling and blasting is the controlled use of explosives and other methods, such as gas pressure blasting pyrotechnics, to break rock for excavation. It is practiced most often in mining, quarrying and civil engineering such as dam, tunnel or road construction. The result of rock blasting is often known as a rock cut. Drilling and blasting currently utilizes many different varieties of explosives with different compositions and performance properties. Higher velocity explosives are used for relatively hard rock in order to shatter and break the rock, while low velocity explosives are used in soft rocks to generate more gas pressure and a greater heaving effect. For instance, an early 20th-century blasting manual compared the effects of black powder to that of a wedge, and dynamite to that of a hammer. The most commonly used explosives in mining today are ANFO based blends due to lower cost than dynamite. Before the advent of tunnel boring machines (TBMs), drilling and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1988 Armenian Earthquake
The 1988 Armenian earthquake, also known as the Spitak earthquake ( hy, Սպիտակի երկրաշարժ, ), occurred on December 7 at with a surface wave magnitude of 6.8 and a maximum MSK intensity of X (''Devastating''). The shock occurred in the northern region of Armenia (then part of the Soviet Union) which is vulnerable to large and destructive earthquakes and is part of a larger active seismic belt that stretches from the Alps to the Himalayas. Activity in the area is associated with tectonic plate boundary interaction and the source of the event was slip on a thrust fault just to the north of Spitak. The complex incident ruptured multiple faults, with a strike-slip event occurring shortly after the initiation of the mainshock. Between 25,000 and 50,000 were killed and up to 130,000 were injured. Seismologists thoroughly studied the effects of the Spitak event, including the mainshock and aftershock fault rupture mechanisms, and were on site setting up temporary seism ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomical Society Of Russia
Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars. Nowada ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Technical University Of Athens
The National (Metsovian) Technical University of Athens (NTUA; el, Εθνικό Μετσόβιο Πολυτεχνείο, ''National Metsovian Polytechnic''), sometimes known as Athens Polytechnic, is among the oldest higher education institutions of Greece and the most prestigious among engineering schools. It is named in honor of its benefactors Nikolaos Stournaris, Eleni Tositsa, Michail Tositsas and Georgios Averoff, whose origin is from the town of Metsovo in Epirus. It was founded in 1837 as a part-time vocational school named Royal School of Arts which, as its role in the technical development of the fledgling state grew, developed into Greece's sole institution providing engineering degrees up until the 1950s, when polytechnics were established outside Athens. Its traditional campus, located in the center of Athens on Patission Avenue on a site donated by Eleni Tositsa, features a suite of magnificent neo- classical buildings by architect Lysandros Kaftantzoglou (1811 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European VLBI Network
The European VLBI Network (EVN) is a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa and Puerto Rico, which performs very high angular resolution observations of cosmic radio sources using very-long-baseline interferometry (VLBI). The EVN is the most sensitive VLBI array in the world, and the only one capable of real-time observations. The Joint Institute for VLBI ERIC (JIVE) acts as the central organisation in the EVN, providing both scientific user support and a correlator facility. Very Long Baseline Interferometry (VLBI) achieves ultra-high angular resolution and is a multi-disciplinary technique used in astronomy, geodesy and astrometry. The EVN operates an open-sky policy, allowing anyone to propose an observation using the network EVN Telescopes The EVN network comprises 22 telescope facilities: Additionally the EVN often links with the UK-based 7-element Jodrell Bank MERLIN interferometer. It can also be co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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