Water moving up pipe P3 replaces water falling from A into C, closing the loop | A wind-wheel operating an organ, marking the first instance in history of wind powering a machine |
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add valves to empty C and replenish B in effect transferring water from C to B | 17th-century German depiction of Hero Born c |
"The Unity and Diversity of the Mediterranean World", Osiris 2, p.
28"Gas-Turbine Standby-Power Generation for Water-Treatment Plants", Journal American Water Works Association 66 2 , p | Executed example of a Heron's fountain in operation Heron's fountain is a hydraulic machine invented by the 1st century AD inventor, mathematician, and physicist also known as Hero of Alexandria |
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The fountain will issue upwards through this pipe | We will accept cash in a pinch, but do prefer not to handle cash at this time |
The pan continued to tilt with the weight of the coin until it fell off, at which point a counter-weight would snap the lever back up and turn off the valve.
17As soon as the water level in the upper container has dropped so low that the water bearing tube no longer touches the water surface, the fountain stops | Pressure is transmitted by the air through pipe P2 into the water supply B, and pushes the water up into pipe P3 |
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Geometrica, a collection of equations based on the first chapter of Metrica• P3 in the middle of the picture from the bottom of the water supply container B , up through the bottom of the basin A to a height above the basin's rim | The fountain can spout almost as high above the upper container as the water falls from the basin into the lower container |
162; 16th edition published 1926 under the name "Mechanical Movements, Power and Devices".
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