Search results
Results From The WOW.Com Content Network
Steam is a digital distribution service and storefront developed by Valve Corporation. It was launched as a software client in September 2003 to provide game updates ...
Steam just above atmospheric pressure (all that the boiler could stand) was introduced into the lower half of the cylinder beneath the piston during the gravity-induced upstroke; the steam was then condensed by a jet of cold water injected into the steam space to produce a partial vacuum; the pressure differential between the atmosphere and the ...
Steam ejected tangentially from nozzles caused a pivoted ball to rotate. This suggests that the conversion of steam pressure into mechanical movement was known in Roman Egypt in the 1st century, however, its thermal efficiency was low. Heron also devised a machine that used air heated in an altar fire to displace a quantity of water from a ...
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be transformed by a connecting rod and crank into rotational force for work.
Steam turbines were also described by the Italian Giovanni Branca (1629) [6] and John Wilkins in England (1648). [7] [8] The devices described by Taqi al-Din and Wilkins are today known as steam jacks. In 1672, an impulse turbine-driven small toy car was designed by Ferdinand Verbiest. A more modern version of this car was produced some time in ...
According to his son Francis, Trevithick was the first to make high-pressure steam work in England in 1799, [11] although other sources say he had invented his first high-pressure engine by 1797. [12] [13] Not only would a high-pressure steam engine eliminate the condenser, but it would allow the use of a smaller cylinder, saving space and ...
If one is drastically different from the others, remove it and change your password. Be aware that there are some legitimate reasons why your history can show unfamiliar locations, such as your mobile device detecting the wrong location or Internet provider using a proxy server.
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.