One of the greatest discoveries ever was the discovery of electricity. Ben Franklin has been given the most credit for the discovery of electricity. Before the legendary kite experiment in 1752 electricity was a known force of nature, but it had not been thoroughly studied. Even after that Franklin did not know what potential his discovery of electricity had. It is said that he once tried to kill a Christmas turkey with electricity, but accidentally made contact with the current and received a nice shock. As time progressed Franklin created more and more electrical devices including the battery and the lightening rod (Thinkquest.org). These inventions were discovered through theories and hypothesis that Franklin thought might be true and he tried them and they worked. All of these things are nice, and today people probably would have difficulty living without them, but at the time in the mid-1700's people had no n

Thinkquest.org website. http://library.thinkquest.org/22254/electricity1.htm

The invention of the airplane was a revolutionary one. The Wright brothers invented the airplane in 1903. The Wright's wanted to see if it was possible for man to fly. They had invented gliders and other flying machines before, but their first successful flight was in 1903. They were given a patent in 1906 for their flying machine (Thinkquest.org). It is nice to know that a person can fly from Phoenix to Las Angeles in just a few hours where it would take 6 or 7 hours by car and days by hose-back or months on foot. While the airplane is a luxury is not a necessity. People can still live full and healthy lives without setting foot on an airplane.

MIT's Invention Demention website. http://web.mit.edu/invent/www/inventorsA-H/carrier.html

National Inventors Hall of Fame website. http://www.renneco.com/Inventure_Place/HOF/43.html

The invention of the air conditioning unit is a very popular one here in Phoenix. This again was not a necessity; in fact even today it is not a necessity it is actually a luxury. In 1902, after earning a Master's degree in Electrical Engineering from Cornell University Willis Carrier invented the first air conditioner. He wanted to see if there was a more efficient way of cooling air and making the air cleaner than what the current ventilation systems could do. This was a great invention because before the air conditioner people had good ventilation systems to cool off buildings and this w

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