科普知识
(2017浙江宁波高三上期末)The heat engine is certainly one of the most important devices that man ever invented.In its simplest meaning,the heat engine is a device that transforms heat energy into other forms of energy,such as mechanical and electrical energy.A great majority of the engines used today lie under the contributions that the heat engine made in the fields of industry,transportation,and the production of electricity gives us a deeper and more detailed look at the importance of heat engines.
The heat engine had a great role in the Industrial Revolution of the nineteenth century. Scientists developed machines,based on heat engines,which could increase the amount of goods produced,and at the same time,decrease the amount of time and money consumed.The manufactured goods became affordable to almost everyone,and they were not a luxury any more.After the introduction of the heat engine in the industrial field,the concept of mass production was first realized,and industry boomed as never before.
Through history man has always tried to invent efficient means of transportation.However,it was not until the invention of the heat engine that this became possible.A new era replaced the old era of animal-powered transportation,an era whose characteristics were speed and comfort.
The train was the first means of transportation that used the heat engine,and it introduced new horizons of long-distance traveling.However,there was another machine that replaced the horse as a personal means of transportation.It was called the car,and it also used the heat engine.The achievements of the car in a few decades wiped out centuries of horse transportation.
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