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Badr-I
Badr-A ( ur, , meaning ''Full Moon-A'') was the first artificial and the first digital communications satellite launched by Pakistan's national space authority — the SUPARCO — in 1990. The ''Badr-A'' was Pakistan's first indigenously developed and manufactured digital communications and an experimental artificial satellite which was launched into low Earth orbit by Pakistan on 16 July 1990, through a Chinese carrier rocket. The launch ushered new military, technological, and scientific developments in Pakistan and also provided data on radio-signal distribution in the ionosphere. Originally planned to be launched from the United States in 1986, the ''Challenger disaster'' furthered delayed the launch of the satellite which changed the plan. After the People's Republic of China offered Pakistan to use its facility, the ''Badr-A'' was finally launched from Xichang Satellite Launch Center in 1990 on Long March 2E. ''Badr-A'' travelled at , taking 96.3 minutes to complete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space & Upper Atmosphere Research Commission
The Space & Upper Atmosphere Research Commission (SUPARCO) ( ur, ) is the executive and national space agency of Pakistan. It is headquartered at the capital city of Islamabad in the northern part of Pakistan with additional facilities at the University of Punjab in Lahore. Established in 1961 to assist development of space science and research in Pakistan, agency started to function only in 1964. It started to import and launch sounding rockets in the early 1960s and attained capability to fabricate rocket engines. However, the agency kept a low profile for the initial 30–35 years of its existence with limited progress in field of research and its progress in satellite technology also started relatively late. The country's first satellite, '' Badr-I'', was built by the SUPARCO and launched from the Xichang Satellite Launch Center, China on July 16, 1990, which provided Pakistani scientists with valuable experience in telemetry and other satellite technologies. SUPARCO pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 243 million people, and has the world's Islam by country#Countries, second-largest Muslim population just behind Indonesia. Pakistan is the List of countries and dependencies by area, 33rd-largest country in the world by area and 2nd largest in South Asia, spanning . It has a coastline along the Arabian Sea and Gulf of Oman in the south, and is bordered by India to India–Pakistan border, the east, Afghanistan to Durand Line, the west, Iran to Iran–Pakistan border, the southwest, and China to China–Pakistan border, the northeast. It is separated narrowly from Tajikistan by Afghanistan's Wakhan Corridor in the north, and also shares a maritime border with Oman. Islamabad is the nation's capital, while Karachi is its largest city and fina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Technology
Technology is the application of knowledge to reach practical goals in a specifiable and reproducible way. The word ''technology'' may also mean the product of such an endeavor. The use of technology is widely prevalent in medicine, science, industry, communication, transportation, and daily life. Technologies include physical objects like utensils or machines and intangible tools such as software. Many technological advancements have led to societal changes. The earliest known technology is the stone tool, used in the prehistoric era, followed by fire use, which contributed to the growth of the human brain and the development of language in the Ice Age. The invention of the wheel in the Bronze Age enabled wider travel and the creation of more complex machines. Recent technological developments, including the printing press, the telephone, and the Internet have lowered communication barriers and ushered in the knowledge economy. While technology contributes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Facet
Facets () are flat faces on geometric shapes. The organization of naturally occurring facets was key to early developments in crystallography, since they reflect the underlying symmetry of the crystal structure. Gemstones commonly have facets cut into them in order to improve their appearance by allowing them to reflect light. Facet arrangements Of the hundreds of facet arrangements that have been used, the most famous is probably the round brilliant cut, used for diamond and many colored gemstones. This first early version of what would become the modern Brilliant Cut is said to have been devised by an Italian named Peruzzi, sometime in the late 17th century.Gems, 5th edition, Webster, 1995.Gemstones of the world, Schumann, 1977. Later on, the first angles for an "ideal" cut diamond were calculated by Marcel Tolkowsky in 1919. Slight modifications have been made since then, but angles for "ideal" cut diamonds are still similar to Tolkowsky's formula. Round brilliants cut b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyhedron
In geometry, a polyhedron (plural polyhedra or polyhedrons; ) is a three-dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices. A convex polyhedron is the convex hull of finitely many points, not all on the same plane. Cubes and pyramids are examples of convex polyhedra. A polyhedron is a 3-dimensional example of a polytope, a more general concept in any number of dimensions. Definition Convex polyhedra are well-defined, with several equivalent standard definitions. However, the formal mathematical definition of polyhedra that are not required to be convex has been problematic. Many definitions of "polyhedron" have been given within particular contexts,. some more rigorous than others, and there is not universal agreement over which of these to choose. Some of these definitions exclude shapes that have often been counted as polyhedra (such as the self-crossing polyhedra) or include shapes that are often not considered as valid polyh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sputnik 1
Sputnik 1 (; see § Etymology) was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc batteries ran out, and continued in orbit for three months until aerodynamic drag caused it to fall back into the atmosphere on 4 January 1958. It was a polished metal sphere in diameter with four external radio antennas to broadcast radio pulses. Its radio signal was easily detectable by amateur radio operators, and the 65° orbital inclination made its flight path cover virtually the entire inhabited Earth. The satellite's unanticipated success precipitated the American Sputnik crisis and triggered the Space Race, part of the Cold War. The launch was the beginning of a new era of political, military, technological and scientific developments. The word ''sputnik'' is Russian for ''satellite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UO-11
UoSAT-2, which is also known as UO-11 and OSCAR-11, is a British satellite orbiting in Low Earth Orbit. The satellite functions as an amateur radio transmitter (known as an OSCAR) and was built at the University of Surrey. It launched into orbit in March 1984 and remains orbital and active, though unstable with irregular periods of transmission. All of the Analog telemetry channels have failed, making telemetry from OSCAR 11 useless. The satellite was still heard transmitting telemetry in 2015, thirty years after launch. It was operated by Surrey Satellite Technology Ltd. (SSTL). Characteristics The satellite was the second in the UoSAT series of satellites built by University of Surrey; preceded by UoSAT-1 and followed by UoSAT-3. The satellite carries a Digitalker speech synthesiser, magnetometers, a CCD camera, a Geiger-Müller tube, and a microphone to detect the vibrations of micrometeoroid impacts. Like UoSAT-1 it transmits telemetry data on the VHF beacon at 1200 baud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Surrey
The University of Surrey is a public research university in Guildford, Surrey, England. The university received its royal charter in 1966, along with a number of other institutions following recommendations in the Robbins Report. The institution was previously known as Battersea College of Technology and was located in Battersea Park, London. Its roots however, go back to Battersea Polytechnic Institute, founded in 1891 to provide further and higher education in London, including its poorer inhabitants. The university's research output and global partnerships have led to it being regarded as one of the UK's leading research universities. The university is a member of the Association of MBAs and is one of four universities in the University Global Partnership Network. It is also part of the SETsquared partnership along with the University of Bath, the University of Bristol, the University of Southampton and the University of Exeter. The university's main campus is on Stag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salim Mehmud
Dr. Salim Mehmud, also known as Salim Mehmood, is a Pakistani rocket scientist and a nuclear engineer. He is the former chairman of Space and Upper Atmosphere Research Commission (SUPARCO). He has served as chief scientist at the Defence Science and Technology Organization. Currently, he is the chief Scientific and Technological Advisor at the Ministry of Communications of Pakistan. Education Mehmud took his BSc in Physics and a BA in Mathematics in 1955 from the Punjab University. The same year, he was admitted at the Punjab University's Graduate Program, and continued his research in Physics. He graduated and received his MSc in Physics and Electronics from Punjab University in 1957. The same year, he joined Pakistan Atomic Energy Commission (PAEC) as Engineer Officer (EO) and served in Nuclear Engineering Division. However, he was awarded a scholarship by former Chairman of PAEC Nazir Ahmad to continue his higher studies, and travelled to United States. There, he attended ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muhammad Zia-ul-Haq
General Muhammad Zia-ul-Haq HI, GCSJ, ร.ม.ภ, (Urdu: ; 12 August 1924 – 17 August 1988) was a Pakistani four-star general and politician who became the sixth President of Pakistan following a coup and declaration of martial law in 1977. Zia served in office until his death in a plane crash in 1988. He remains the country's longest-serving ''de facto'' head of state and Chief of Army Staff. Educated at St. Stephen's College, Delhi , Zia was commissioned in the British Indian Army in the Guides Cavalry on 12 May 1943 after graduating from the Officer Training School (OTS) Mhow as British Army Officer and fought against Japanese forces in World War II in Burma and Malaya, before opting for Pakistan in 1947. He fought as a tank commander in the Indo-Pakistani War of 1965. In 1970, he led a military training mission to Jordan, proving instrumental to defeating the Black September insurgency against King Hussein. In recognition, Prime Minister Zulfikar Ali Bh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chief Martial Law Administrator
The office of the Chief Martial Law Administrator was a senior and authoritative post with Zonal Martial Law Administrators as deputies created in countries such as Pakistan, Bangladesh and Indonesia that gave considerable executive authority and powers to the holder of the post to enforce martial law in the country in an events to ensure the continuity of government. This office has been used mostly by military officers staging a '' coup d'état''. On some occasions, the office has been under a civilian head of state. Pakistan Some famous holders of this post in Pakistan include: # Field Marshal Ayub Khan (1958–62): held the post under President Iskander Mirza. # Lt. Gen. Bakhtiar Rana: held the post of Chief Martial Law Administrator West Pakistan # General Yahya Khan (1969–71): held the post simultaneously as the President of Pakistan. # Lt. Gen. Tikka Khan (1969–71): was appointed Chief Martial Law Administrator of West Pakistan in 1969 and of East Pakistan in 1971 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Munir Ahmad Khan
Munir Ahmad Khan ( ur, ; 20 May 1926 – 22 April 1999), , was a Pakistani nuclear reactor physicist who is credited, among others, with being the "father of the atomic bomb program" of Pakistan for their leading role in developing their nation's nuclear weapons during the successive years after the war with India in 1971. From 1972 to 1991, Khan served as the chairman of the Pakistan Atomic Energy Commission (PAEC) who directed and oversaw the completion of the clandestine bomb program from its earliest efforts to develop the atomic weapons to their ultimate nuclear testings in May 1998. His early career was mostly spent in the International Atomic Energy Agency and he used his position to help establish the International Centre for Theoretical Physics in Italy and an annual conference on physics in Pakistan. As chair of PAEC, Khan was a proponent of the nuclear arms race with India whose efforts were directed towards concentrated production of reactor-grade to weapon-gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
