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20th Century Science ,[object Object],Lynette Reyes-Rosario,[object Object]
Willis Carrier invents the air conditioner,[object Object],[object Object],One year after earning a master's degree in Electrical Engineering from Cornell University in 1901, Willis Haviland Carrier developed and patented the world's first modern air conditioner. His invention controlled not only temperature but also humidity. And it's not only used to provide cool air to people when they're hot; cool air also helps stopping certain diseases from spreading.,[object Object]
The Wright brothers invent the first gas motored and manned airplane,[object Object],Thursday, December 17, 1903, dawned windy and cold on North Carolina's Outer Banks. At Kill Devil Hills, the thermometer hovered around the freezing mark, and a 25-mile-per-hour (40-kilometer-per-hour) wind blowing out of the north made it feel even colder. This invention made possible to travel different parts of the world in less time than boats. And served as a weapon in wars.,[object Object]
Charles Franklin Kettering invents the first automobile electrical ignition system,[object Object],[object Object],Kettering's key-operated electric self-starting ignition system, introduced on Cadillac vehicles in 1912 and patented three years later, made automobiles far easier and safer to operate than they had been previously, when the ignition process had been powered by iron hand cranks. By the 1920s, electric self-starters would come standard on nearly every new automobile.,[object Object]
The most important for me is the airplane. It provides transportation and it allows people to see other parts of the world. Second, the  automobile electrical ignition system because without it a trip could take longer and  the electrical ignition system made possible for cars to be faster. But it does not travel the distance as an airplane. And lastly, the air conditioner. It is important if you live in a hot temperature area and for some companies to produce their products but transportation is a greater priority.,[object Object]

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20th Century Science

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