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Construction of hand dug wells can be dangerous due to collapse of the well bore, falling objects and asphyxiation, including from dewatering pump exhaust fumes. The Woodingdean Water Well, hand-dug between 1858 and 1862, is the deepest hand-dug well at 392 metres (1,285 ft). [15]
The Nampa figurine is a small female figure made out of fired clay. The object is 1.5 inches (38 mm) in size and contains pieces of clay, quartz, and traces of iron oxide. The figure was found to be well worn with faint markings that may have represented clothing or jewelry around the chest and neck. The right leg of the figure was broken off. [1]
The steadily-flowing water is rich in calcium carbonate and calcium sulfate, which crystallises on objects and gradually hardens them. A petrifying well is a well or other body of water which gives objects a stone-like appearance. If an object is placed into such a well and left there for a period of months or years, the object acquires a stony ...
A well-ordered set S contains for every subset T with an upper bound a least upper bound, namely the least element of the subset of all upper bounds of T in S. If ≤ is a non-strict well ordering, then < is a strict well ordering. A relation is a strict well ordering if and only if it is a well-founded strict total order. The distinction ...
A keychain containing a four-leaf clover. A good luck charm is an amulet or other item that is believed to bring good luck.Almost any object can be used as a charm. Coins, horseshoes and buttons are examples, as are small objects given as gifts, due to the favorable associations they make.
A Quantum Well Infrared Photodetector (QWIP) is an infrared photodetector, which uses electronic intersubband transitions in quantum wells to absorb photons. In order to be used for infrared detection, the parameters of the quantum wells in the quantum well infrared photodetector are adjusted so that the energy difference between its first and ...
Ruyi (As Desired or As [You] Wish), a curved decorative object that serves as a ceremonial sceptre in Chinese Buddhism or a talisman symbolizing power and good fortune in Chinese folklore. (Chinese folklore) Was (Power or Dominion), a scepter associated with the gods as well as with the pharaoh. In later use, it was a symbol of control over the ...
The official position taken by the Wikimedia Foundation is that "faithful reproductions of two-dimensional public domain works of art are public domain".This photographic reproduction is therefore also considered to be in the public domain in the United States.