Inventions of the Renaissance Clocks The first mechanical clock was invented in the early 1300’s. With this invention time began to be measured in hours (24 hours equaling a day). Galileo‚ an Italian scientist‚ discovered the pendulum in 1581. The pendulum greatly improved the constant movement of the hands or bell of a clock. The average error with the pendulum varied only by seconds each day. Before this the error was from 10 to 15 minutes a day. During the 1600’s the metallic gear‚ or toothed
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Cooper - History of Cell Phone. (2003). Recovered june 15 of 2014‚ from http://inventors.about.com/cs/inventorsalphabet/a/martin_cooper.htm Martin Cooper Mobile Phone Inventions Whartonmotorola Attwireless Technology Innovatators. (2008). Recovered june 15 of 2014‚ from http://www.sciences360.com/index.php/martin-cooper-mobile-phone-inventions-whartonmotorola-attwireless-technology-innovatators-18207/ Firt cellphone a true ‘brick’. (2005). Recovered june 15 of 2014‚ from http://www.nbcnews.com/id/7432
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Being one of the most significant inventions of the 1920s‚ the automobile drastically changed the lives of Americans for the better. It not only improved transportation‚ obviously‚ but it also gave the economy the boost it needed to provide America with the age of prosperity that the 20s is known for. The first automobile developed with a combustion engine was invented by Henry Ford who later founded the Ford Motor Company‚ which was known for its achievements in bringing America its first affordable
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Roman Contributions The Romans are considered among the greatest architects of ancient times. They were incredible builders and excellent engineers. The Romans cannot take all the credit for their accomplishments though; some of their inventions were just improvements on older ideas or concepts from Greece. Aqueducts are one thing the Romans got from Greece‚ although‚ they were not called aqueducts in Greece. The Greeks were the first to have a mass water supply system. They used water pumps
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Role of mycorrhizas in the mineral nutrition of host plants Mycorrhizas are very important in the uptake of nutrients such as P‚ N‚ K‚ Cu‚ Zn and Ca by plants especially in soils low in these nutrients. Since P is the most limiting nutrient in tropical soils‚ mycorrhizas are vital for improving P nutrition particularly for cultivated plants. External hyphae can absorb and translocate P to the host from soil outside the root depletion zone. The thin mycorrhizal hyphae (2-4 μm in diameter) are able
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An Important Invention. In 2007‚ Apple released something big and it impacted people everywhere. Everybody wanted one and went out of their ways to get this item. It became huge. What is this item‚ you ask? This was the year when the first iPhone came out. The iPhone has changed how people live and interact in the world. The phone has impacted society in both negative and positive ways. For many people‚ this invention has made a difference. First‚ many people believe that the iPhone has made
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The Greatest Invention In today’s modern world in which we live in‚ there are many things which we use from the mode of transportation‚ computers‚ cell phones‚ television‚ electricity and so many other things which we use in our everyday lives which make life easy. These things help to increase quality living but how many of us care to know the master minds behind the inventions of these things we use. In my opinion‚ the aeroplane is the greatest invention.
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CHINESE CIVILIZATION http://en.wikipedia.org/wiki/China Wikipedia: China http://library.thinkquest.org Thinkquest: Discovering China & Beauty: The Land of China http://www.kwintessential.co.uk/articles/article/China/ Part I INTRODUCTION The land here is broad and diverse. Among this immense piece of earth‚ one can find both farmer and businessman; mountain and plain; drought and rainfall; wasteland and farmland. It is vast‚ it is multifaceted. And yet these collections of disparate
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THE GREATEST INVENTION SOARS What invention soars like a bird but is much bigger? An airplane! I bet most of you got that. But this here isn’t a regular invention. It’s the greatest invention. It’s just so amazing. I mean we get a chance to fly. And I bet there’s tons of other ways the airplane is awesome. I’ll share some things about the airplane. First‚ you must know who invented such a fabulous invention. The genius or should I say geniuses who made the airplane were the wright brothers
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Internet Inventions Several inventions have changed the way people communicate with each other. From the old fashioned telegraph to today’s modern electronic forms of communicating‚ people have beencreating easier ways to correspond. Electronic communication‚ such as e-mail and other internet offerings‚ have created a cheap and incredibly fast communications system which is gaining steady popularity. E-mail is basically information‚ usually in letter form‚addressed to a destination on the internet
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