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The new Trafalgar Square fountains in London, with new pumps and lighting, opened in June 2009. The fountain called 'Bit.Fall' by German artist Julius Popp (2005) uses digital technologies to spell out words with water. The fountain is run by a statistical program which selects words at random from news stories on the Internet.
As in the other pumping installations, the pistons have leather envelopes which are kept wet by small water pipes. The staggered action of the beams and pumps is clearly visible and a glance on the fountain proves the water pressure to be almost constant. The water wheels have a diameter of 3.00 m, a width of 2.70 m and 30 blades each.
The impeller pumps water from the first few feet of the water and expels it into the air. [4] This process utilizes air-water contact to transfer oxygen. As the water is propelled into the air, it breaks into small droplets. Collectively, these small droplets have a large surface area through which oxygen can be transferred. Upon return, these ...
The fountains were carefully designed so that a sheet of water flowed evenly from the rim of the vasque, even if the wind was strong and the water supply was uneven. A small channel hidden just inside the rim of the vasque moderates the flow of water. [6] In the 20th century, the gravity system was replaced with pumps, which recycle the water.
In landscape architecture and garden design, a water feature is one or more items from a range of fountains, jeux d'eau, pools, ponds, rills, artificial waterfalls, and streams. Before the 18th century they were usually powered by gravity, though the famous Hanging Gardens of Babylon are described by Strabo as supplied by an Archimedean screw ...
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