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Discovery Timeline - Essay Example

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Prior to the 17th century, man new of the solar system what could be easily discovered without the help of advanced optical instruments such as the telescope. Up until this time, it was thought that the Earth was center of the universe, with other bodies revolving around it…
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Discovery Timeline
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Download file to see previous pages Up until the 16th century, people thought that heavy objects fell faster. Galileo Galilei, in 1585, climbed to the top of the leaning Tower of Pisa and dropped two objects. One object was heavy and the other was light, but both reached the ground at the same time. Thus, he proved that objects fall at the same rate and accelerate as they fall. (Ed-Helper, n.d) Later on, Galilei expressed his theories with equations, and his discoveries and equations served as a guideline for Newton's equations of gravity, which are still used to date.
In 1752, Benjamin Franklin discovered electricity. 'Ben suspected that lightning was an electrical current in nature, and he wanted to see if he was right. One way to test his idea would be to see if the lightning would pass through metal. He decided to use a metal key and looked around for a way to get the key up near the lightning. he used a child's toy, a kite, to prove that lightning is really a stream of electrified air, known today as plasma. His famous stormy kite flight in June of 1752 led him to develop many of the terms that we still use today when we talk about electricity: battery, conductor, condenser, charge, discharge, uncharged, negative, minus, plus, electric shock, and electrician.' (AmericanRevolution, n.d)
In 1879, Thomas Edison discovered the incand...
Incandescent light bulbs or lamps are sources of artificial light which use electricity to emit light. With this discovery, he enabled portable lighting, such as table lamps, some car headlamps and electric flashlights, and decorative and advertising lighting.
1. Bill Arnett (last updated: 2007 Jun 02) Appendix 3:Chronology of Solar System Discovery. Retrieved May 29, 2008 from
2. The Age of Discovery - Gravity and Gauss. Retrieved May 29, 2008 from
3. Benjamin Franklin and Discovery of Electricity. Rerieved May 29, 2008 from
4. Tom Edison (n.d). Incandescent Light. Retrieved May 29, 2008 from ...Download file to see next pagesRead More
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