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  Radio Detection And Ranging Radar is a system that uses radio waves to determine the distance,speed and direction of objects relative to the point from where the radio waves are emitted.It is used to detect and track aircraft, ships, spacecraft, guided missiles, motor vehicles, map weather formations, and terrain. Uses of Radar It is used in air and terrestrial traffic control, radar astronomy, air-defence systems, anti-missile systems, marine radars to locate landmarks and other ships, aircraft anti-collision systems, ocean surveillance systems, outer space surveillance.Radar is also used to spot space debris which have the potential to break satellites. Radio Waves Radio waves are electromagnetic waves with a frequency between about 10 to 4 and 10 to 11 or 10 to 12 Hz used for long distance communication. Frequency Frequency describes the number of waves that pass a fixed place in a given amount of time. Hertz is the unit of measurement for frequency How is Radar used in Air...

                                                                                                      Summary-August is a 10 year-old boy with mandibulofacial Dystosis and Treacher Collins Syndrome. Wonder is a book about his life from his  point of view and the point of view of his school friends, his sister, his sister's boyfriend and her friend. The book starts by introducing August Pullman and him starting school. At school, he is bullied, teased and called many different names like orc because of his face. This story talks about his first school year and how he gets through it from being a kid who was hated by everyone in the school except a couple of people to a kid famous for standing up and being mentally strong. My fa...