Compass Another great invention of humankind that has a huge impact on our societies is compass and we will talk about it in this section. This section consists of four subsections: introduction, history of compass, impact of compass on society, and conclusion. I.Introduction: 1)What is a compass? A compass is an instrument, which displays the direction of the horizontal component of the Earth's magnetic field at the point of observation, by a freely suspended …
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showed last 75 words of 2193 total
…inventors.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Flibrary.advanced.org%2F23062%2Findex.html}, November 15, 2002. [7]. {http://www.coastalnavigation.com/samples/sec_3/3_pages/history}, November 22,2002. [8]. A. Hine, Magnetic Compass and Manometers, Adam Hilger LTD., London, 1968, pp. 1-7, 87-88, 211. [9]. {http://www.boatsafe.com/kids/navigation.htm}, November 24, 2002. [10]. {http://europeanhistory.about.com/cs/colonimperialism/index.htm}, November 25, 2002. [11].{http://www.bigchalk.com/cgibin/WebObjects/WOPortal.woa/wa/HWCDA/file?fileid=100415&flt=CAB&tg=}, November 25,2002.