Discovery Timeline Essay Example | Topics and Well Written Essays - 750 words

Discovery Timeline - Essay Example 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. References 1. Bill Arnett (last updated: 2007 Jun 02) Appendix 3:Chronology of Solar System Discovery. Retrieved May 29, 2008 from http://www.nineplanets.org/history.html 2. The Age of Discovery - Gravity and Gauss. Retrieved May 29, 2008 from http://edhelper.com/ReadingComprehension_35_204.html 3. Benjamin Franklin and Discovery of Electricity. Rerieved May 29, 2008 from http://www.americanrevolution.com/BenjaminFranklinElectricity.htm. 4. Tom Edison (n.d). Incandescent Light. Retrieved May 29, 2008 from