The history of telecommunication began with the use of smoke signals and drums in Africa‚ the Americas and parts of Asia. In the 1790s‚ the first fixed semaphore systems emerged in Europe; however it was not until the 1830s that electrical telecommunicationsystems started to appear. This article details the history of telecommunication and the individuals who helped make telecommunication systems what they are today. The history of telecommunication is an important part of the larger history of communication
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temperature of the centre of the earth is 2000° C. The circumference of the earth is 40‚000 km. The earth completes one rotation around its axis in 24 hours. The earth completes one revolution around the sun in 365.26 days. The earth has only one natural satellite (moon). The age of the earth is determined by uranium process (Radioactive process). The Mercury: The Mercury is the nearest planet to the sun. It is the eighth largest planet of the solar system. It takes only 88 earth’s days to complete one
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Earth by using satellites. I. Geosphere (Solid Earth) The Geosphere is made up of mostly rock. Beneath the surface of Earth‚ forces inside are a crucial source for the basic materials that nurture life. Volcanoes and earthquakes are examples of reactions to disturbances that initially took place under the Earth’s surface. Although destructive‚ the natural forces behind these events also provide the materials we and other living organisms need to survive. Through satellites we can see that
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Essay And Article On : Our Cultural Heritage !! March 24‚ 2012 By parm Leave a Comment inShare India Is A Unique Cultural Heritage !! A safe and secure society is needed for blossoming of arts and sciences. India has a rich cultural heritage. Though it has been subjected to a series of cultural invasions‚ yet it has retained its originality and traditional character even after absorbing the best of the external influences. India is the cradle of one of the earliest civilizations of the world – the
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QUESTION 1. Externalities in this situation exist where the Government‚ Country or Private Organisation decides to launch a new satellite causing costs and benefits to other members of society which do not impact on the G‚C or PO. Such externalities include: NEGATIVE (Costs to other members of society) Hazard to the useful working satellites that surround Earth. Threat to our dependence for communications‚ broadcasting and surveillance. Debris from one collision
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Traffic Management in ATM Networks Over Satellite Links Rohit Goyal‚ Raj Jain‚ Mukul Goyal‚ Sonia Fahmy‚ Bobby Vandalore Department of Computer Information Science 2015 Neil Ave‚ DL395 Columbus‚ OH 43210 Phone: (614)-688-4482. Fax: (614)-292-2911. Email: goyal@cis.ohio-state.edu‚ jain@cis.ohio-state.edu Tom vonDeak NASA Lewis Research Center 21000 Brookpark Road‚ MS 54-2 Cleveland‚ OH 44135 Phone: 216-433-3277 Fax: 216-433-8705 Email: tvondeak@lerc.nasa.gov Abstract This report presents
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educational infrastructure and non-availability of good teachers in sufficient numbers adversely affect the efforts made in education. EDUSAT is the first Indian satellite built exclusively for serving the educational sector and it was launched successfully by GSLV-F01 on 20-9-2004. It is mainly intended to meet the demand for an interactive satellite based distance education system for the country. It strongly reflects India’s commitment to use space technology for national development‚ especially for the
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14-15 16 RAILWAYS 15-16 17 FUTURE OF GPS 16 18 CONCLUSION 16-17 19 BIBU06RAPY 17 ITINBUSINESS Global Positioning System Introduction: The GPS is made up of three parts: satellites orbiting the Earth; control and monitoring stations on Earth; and the GPS receivers owned by users. GPS satellites broadcast signals from space that are picked up and identified by GPS receivers. Each GPS receiver then provides
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reference stations and their coordinates to increase the accuracy. Nevertheless‚ the system is slightly expensive and serves those purposes‚ which require high accuracy. Precision also reduces when the satellites are widely apart or clustered together. For highly precise location‚ one satellite should be directly above the vehicle‚ and the other three should be spaced equally and stationed as close to the horizon as possible. However‚ the error is predictable and can determine the quality of the
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card storage and GOOGLE EARTH map interface THE GLOBAL Positioning System (GPS) is a satellite-based navigation system developed by the US Department of Defence. The first GPS system was tested in 1960s using a constellation of five satellites. This system was implemented for military purposes and provided navigational fix data approximately every hour; it was not very accurate. In 1993 the number of satellites increased to 24. The system became fully operational and it was also made available to
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