equatorial plane of the earth such that a satellite appears to hover over a fixed point on the equator. The period of revolution is equal to the period of rotation of the earth with respect to the stars‚ or 23 hours 56 minutes 4.1 seconds‚ and thus by Kepler’s third law the orbital radius is 42‚164 km. Taking into account the radius of the earth‚ the height of a satellite above the equator is 35‚786 km. Clarke observed that only three satellites would be required to provide communications
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1. What is the main difference between a virus and a Trojan? A computer virus attaches itself to a program or file enabling it to spread from one computer to another‚ leaving infections as it travels. Like a human virus‚ a computer virus can range in severity: some may cause only mildly annoying effects while others can damage your hardware‚ software or files. Almost all viruses are attached to an executable file‚ which means the virus may exist on your computer but it actually cannot infect your
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Libraries Should Use Software Filters for Internet Access Public libraries provide us with a large amount of information. Residents can borrow books from libraries. Libraries also provide Internet access for everyone‚ including children. Since parents cannot control what then children are seeing on the Internet in libraries‚ children can access pornographic or violent sites easily. So‚ public libraries should restrict Internet access by utilizing filtering software to prevent children from seeing
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Should the government have somewhat of a access to your internet history? Should your principle be able to keep an eye on your social media? The government and schooling should be able to have access to the students and the people’s social media and internet searches because cyberbullying is a big problem that is occurring. Another reason is terrorism‚ dealing with the terrifying terrorist attack that took down the twin towers on September 9‚ 2001. The last reason is that there is such a big
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ARTIFICIAL SATELLITES INTRODUCTION: An Artificial Satellite is a people-made machine that orbits a variety of other objects in space. Many Artificial Satellites orbit the Earth to gather information about the universe‚ to predict the weather‚ to help with the navigation of ships and planes‚ to assist in telephone calls over the ocean‚ to observe the Earth‚ and as a tool to improve military activities. Though Artificial Satellites have mostly orbited Earth‚ some have orbited the moon‚ the sun
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Recent Trends in Wireless Radio and Satellite Communication Gori Shankar1‚ Rajiv Kumar2 Suresh Gyan Vihar University‚ M.Tech (VLSI) 1 ‚Jaipur Engg. College‚ B.Tech (ECE) 2 gssharma1951@gmail.com‚rajivresnick@gmail.com Abstract- In this paper we discussed satellite and radio communication links. Satellites have evolutionized communication. Satellite and radio communication has served mankind
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A conversion is a religious experience that changes a persons beliefs from one religion to another‚ there are three types of conversion with characteristics varying among them. Mystical experience however is a more extreme form of experience‚ which is not just seeing hearing or feeling someone but a deeper union with god. Non-volitional is a non voluntary conversion which is forced on someone. This usually means that the person is hostile to the belief they later come to hold‚ as it is forced
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infared satellite. I say this because it is looking underground‚ even if it is just a foot‚ and seeing things that you wouldn’t be able to see with just your eye. These Egyptologists‚ are taking these devices and looking at different denser areas in the ground to find out if there was once a city‚ tomb‚ or road there. "If I had approched this as a traditional foot survey‚ it would have taken me three and a half years" (Article 3‚ Paragraph 5)‚ this shows how effective the infared satellite is.
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What are the characteristics of a good manager? By Carolien Toor Introduction Over the years I have worked in many various businesses; large as well as small‚ from stressful to peaceful environments and during good times as well as bad times. What I learned‚ through my experience from the various firms I worked for was the role the manager had in the workplace and how it affected me as an employee. When set this task I started to reflect how my past managers acted and how they got me motivated
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Wireless Power Transmission for Solar Power Satellite (SPS) (Second Draft by N. Shinohara) 1. Theoretical Background It is known that electromagnetic energy also associated with the propagation of the electromagnetic waves. We can use theoretically all electromagnetic waves for a wireless power transmission (WPT). The difference between the WPT and communication systems is only efficiency. The Maxwell’s Equations indicate that the electromagnetic field and its power diffuse to all directions. Although
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