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Tall Tales & History Jotted Down by a Homeschooled Kid. Recent Posts • Arachnid(based on a true story)• American History: How Benjamin Franklin Came to Philadelphia... • Church History: The Story of the Chinese Christians and the Boxer Rebellion • Literature: The Story of Hero and Leander • Today I Finished My Geography Book... Links • Home• View my profile • Archives • Email Me • My Blog's RSS
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Entry 5
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Posted in Narrations
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Today I finished my geography book, and I learned about how global positioning systems work. There are 24 GPS satellites in orbit around the earth. They send a signal to GPS receivers all around the world. The receivers calculate how far away each of the satellites are, and from this, can calculate exactly where the unit is. |
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