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下面的这篇SAT经典写作素材是关于大名鼎鼎的蒸汽机发明者瓦特。瓦特对现代社会的影响是非常深远的，这篇SAT写作素材详细的介绍他的生平和发明蒸汽机的过程以及相关影响等。下面大家就和小编一起来看看详细内容吧。 Watt James Watt, the son of a merchant, was born in Greenock, Scotland, in 1736. At the age of nineteen Watt was sent to Glasgow to learn the trade of a mathematical-instrument maker. After spending a year in London, Watt returned to Glasgow in 1757 where he established his own instrument-making business. Watt soon developed a reputation as a high quality engineer and was employed on the ForthClyde Canal and the Caledonian Canal. He was also engaged in the improvement of harbours and in the deepening of the Forth, Clyde and other rivers in Scotland. In 1763 Watt was sent a Newcomen steam engine to repair. While putting it back into working order, Watt discovered how he could make the engine more efficient. Watt worked on the idea for several months and eventually produced a steam engine that cooled the used steam in a condenser separate from the main cylinder. James Watt was not a wealthy man so he decided to seek a partner with money. John Roebuck, the owner of a Scottish ironworks, agreed to provide financial backing for Watts project. When Roebuck went bankrupt in 1773, Watt took his ideas to Matthew Boulton, a successful businessman from Birmingham. For the next eleven years Boultons factory producing and selling Watts steam-engines. These machines were mainly sold to colliery owners who used them to pump water from their mines. Watts machine was very popular because it was four times more powerful than those that had been based on the Thomas Newcomen design. | 
