Steam engines are a technological advancement that has made our lives indeffinately easier and it all started with one man. In 1698, Thomas Savery patented the first steam engine. He had been working on the problem of removing water out of coal mines. Savery's machine was a closed vessel filled with water into which steam under pressure was introduced. The steam forced that water upward and out of the mine shaft, and then a cold water sprinkler was introduced to condense the steam. This process created a vacuum which sucked more water out of the mine shaft through a bottom valve. This invention revolutionized the modern world with the introduction of the first locomotive and later the steam boat.
http://inventors.about.com/library/inventors/blsteamengine.htm
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