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The chain model helps to understand how a siphon can cause liquid to flow uphill, powered only by the downward force of gravity. A siphon can sometimes be thought of like a chain hanging over a pulley, with one end of the chain piled on a higher surface than the other.
Siphon tubes are a basic implement used in irrigation to transfer water over a barrier (such as the bank of a raised irrigation canal), using the siphon principle. At the simplest they consist of a pipe with no working parts. To work they rely on the water level in the canal being at a higher level than the water level in the field being irrigated.
Heron's fountain is not a perpetual motion machine. [2] If the nozzle of the spout is narrow, it may play for several minutes, but it eventually comes to a stop. The water coming out of the tube may go higher than the level in any container, but the net flow of water is downward.
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The design was first reported by McCarthy (1934). [2] As shown in the diagram, a stoppered reservoir is supplied with an air inlet and a siphon.The pressure at the bottom of the air inlet is always the same as the pressure outside the reservoir, i.e. the atmospheric pressure.
The concentric siphon or annular siphon is a rarer embodiment of the siphon which has the discharge tube separate from the inlet tube, with the opening of the outlet within the inlet tube. It has the advantages of taking up less space and of being able to be constructed with straight tubes and standard fittings, with no need for forming a U in ...
The Electric Brae is a road on which cyclists pedal hard to ride downhill, then rest while coasting uphill. Even a car in neutral will look like it's starting to roll up the hill.
Linear peristaltic pump. A form of peristaltic pump was described in The Mechanics Magazine in 1845. The pump used a leather hose which did not need to self-open when released by the rollers, instead relying on the incoming water having sufficient pressure to fill the open inlet end on each cycle. [1]