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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all completely covered in small scales. All the adults in the Lepidoptera family start off as a caterpillar‚ which resembles a worm‚and grow up to be either a moth or a butterfly. The butterflies have very thin antennas and tend to fly during the day‚ while the moths have feathery antennas and are attracted by night lights. Orthoptera- Examples are: Gryllus campestris‚ Stenopalmatus fuscus and Schistocerca gregaria. These insects have large hind legs‚ used especially for jumping. They have hidden
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Anatomy of contemporary GSM cellphone hardware Harald Welte April 16‚ 2010 Abstract Billions of cell phones are being used every day by an almost equally large number of users. The majority of those phones are built according to the GSM protocol specifications and interoperate with GSM networks of hundreds of carriers. Despite being an openly published international standard‚ the architecture of GSM networks and its associated protocols are only known to a relatively small group of R&D engineers
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Letter of transmittal Toufiqul Islam Instructor of the course: Basics in Social Science. American international university –Bangladesh Dear Sir‚ we write this letter to inform you that we have prepared a research report on “Impact of Mobile Phone”‚ that you assigned us a partial requirement of the course‚ Basics in Social Science. The research report consists of the overview of the impact of mobile phone in our daily life. We are thankful to you for allowing us the opportunity to do the research
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by adding multiple-input multiple-output (MIMO) and 40 MHz channels to the physical (PHY) layer‚ and frame aggregation to the MAC layer. MIMO is a technology which uses multiple antennas to coherently resolve more information than possible using a single antenna. Two important benefits it provides to 802.11n are antenna diversity and spatial multiplexing. 802.11g The 802.11g specification is the most recent of the Wi-Fi specs to be approved and is currently the most commonly implemented
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radio by Nikolai Telsa in the 1880s. When these two great technologies are combined it made the cell phone. People who needed mobile-communication devices had radio telephones in their cars. In the radio-telephone systems‚ there was one central antenna tower per city‚ and perhaps 25 channels available on the tower. In your car you needed a powerful transmitter. Not everyone could have a radio telephone because there were only 25 channels available per city. Each cell phone has a cellular system
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ABSTRACT The aim of technology is to make products in a large scale for cheaper prices andincreased quality. The current technologies have attained a part of it‚ but themanufacturing technology is at macro level. The future lies in manufacturing productright from the molecular level. Research in this direction started way back in eighties. At that time manufacturing at molecular and atomic level was laughed about.But due toadvent of nanotechnology we have realized it to a certain level. One such
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example‚ Tampa International airport offers free Wi-Fi in many areas of the airport. Signs direct users to “hotspots” serving travelers iternet access between flights. Hotspots are within 300 feet from an antenna broadcasting a signal. This service is limiting since a person cannot move far from the antenna without losing connection. The biggest downside to this technology is security—it has none. Therefore‚ a person would never want to pass personal‚ private‚ or sensitive information over a Wi-Fi network
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As such antennas made with a Quaker Oats container and aluminum foil can intercept radio transmissions if they do not encrypt or otherwise secure the source of the communications. This is a primary risk of wireless communications that many users fail to appreciate
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ESPINOSA‚RICHARD ANDERSON A. B.S AVTECH-4C JUNE 12‚ 2013 PEDU 211 ASSIGNMENT: Game characteristic of volleyball Volleyball: Is a team sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team’s court under organized rules. The complete rules are extensive. But simply‚ play proceeds as follows: a player on one of the teams begins a ’rally’
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