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A shadoof or shaduf, [1] well pole, well sweep, sweep, [2] swape, [3] or simply a lift [4] is a tool that is used to lift water from a well or another water source onto land or into another waterway or basin. It is highly efficient, and has been known since 3000 BCE.
The introduction of this machine had a decisive influence on agriculture as this wheel lifted water 3 to 8 metres with much less labour force and time than the Shaduf, which was the previous irrigation device in the Kingdom. The Shaduf relied on human energy while the saqiya was driven by buffalos or other animals. [20]
Whether it's called shaduf, shadoof, or any other variant, there should be complete consistency throughout the article. It should pick one name as a preferred version, mention the others, and then stick to the preferred name throughout. Currently, we have the article name "Shadoof" immediately followed by "A shaduf.... is an irrigation tool".
This page was last edited on 22 February 2004, at 14:31 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The tubing hanger attaches to the topmost tubing joint in the wellhead to support the tubing string. Hitch: Rig employees refer to their work period as a 'hitch.' A common hitch is 20 days on, followed by 10 days off. Typically, two crews will be on and each crew will spend one week working 7am-7pm and the following week 7pm-7am.
These ancient structures help control high speed winds [clarification needed] to naturally cool buildings, [25] which was needed to make the area habitable, as Yazd has a hot and dry climate. According to Chris Soelberg and Julie Rich, researchers in a university in Utah, wind catchers have been seen as far back as 3,300 years ago in Egypt, but ...
Agriculture was the main economic activity in ancient Mesopotamia.Operating under harsh constraints, notably the arid climate, the Mesopotamian farmers developed effective strategies that enabled them to support the development of the first known empires, under the supervision of the institutions which dominated the economy: the royal and provincial palaces, the temples, and the domains of the ...
It is unknown whether the ancient Egyptians had kites, but a team led by Maureen Clemmons and Mory Gharib raised a 5,900-pound, 15-foot (4.6 m) obelisk into vertical position with a kite, a system of pulleys, and a support frame. [32] Maureen Clemmons developed the idea that the ancient Egyptians used kites for work. [32] [33]