Template:Short description Template:Use dmy dates Template:More citations needed Steam power developed slowly over a period of several hundred years, progressing through expensive and fairly limited devices in the early 17th century, to useful pumps for mining in 1700, and then to Watt's improved steam engine designs in the late 18th century. It is these later designs, introduced just when the need for practical power was growing due to the Industrial Revolution, that truly made steam power commonplace.

Development phasesEdit

Early examplesEdit

  • 1st century AD – Hero of Alexandria describes the Aeolipile, as an example of the power of heated air or water. The device consists of a rotating ball spun by steam jets; it produced little power and had no practical application, but is nevertheless the first known device moved by steam pressure. He also describes a way of transferring water from one vessel to another using pressure. The methods involved filling a bucket, the weight of which worked tackle to open temple doors, which were then closed again by a deadweight once the water in the bucket had been drawn out by a vacuum caused by cooling of the initial vessel.
  • Template:Timeline-event He claims it was built by Pope Sylvester II.<ref>Template:Cite book</ref>
  • Late 15th century AD: Leonardo Da Vinci described the Architonnerre, a steam-powered cannon.<ref>{{#invoke:citation/CS1|citation

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Development of a practical steam engineEdit

The Newcomen Engine: Steam power in practiceEdit

Watt's engineEdit

Improving powerEdit

|CitationClass=web }}</ref> Earlier versions of the steam engine indicator were in use by 1851, though relatively unknown.<ref name = "Hunter 1991">Template:Cite book</ref>

See alsoEdit

NotesEdit

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External linksEdit

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