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O'Neill cylinder. An O'Neill cylinder (also called an O'Neill colony) is a space settlement concept proposed by American physicist Gerard K. O'Neill in his 1976 book The High Frontier: Human Colonies in Space. [1] O'Neill proposed the colonization of space for the 21st century, using materials extracted from the Moon and later from asteroids.
Linescan camera image (reversed to resemble an impression). A cylinder seal is a small round cylinder, typically about one inch (2 to 3 cm) in length, engraved with written characters or figurative scenes or both, used in ancient times to roll an impression onto a two-dimensional surface, generally wet clay.
The Haniwa (埴輪) are terracotta clay [2][3] figures that were made for ritual use and buried with the dead as funerary objects during the Kofun period (3rd to 6th centuries AD) of the history of Japan. Haniwa were created according to the wazumi technique, in which mounds of coiled clay were built up to shape the figure, layer by layer. [4]
In projective geometry, a cylinder is simply a cone whose apex (vertex) lies on the plane at infinity. If the cone is a quadratic cone, the plane at infinity (which passes through the vertex) can intersect the cone at two real lines, a single real line (actually a coincident pair of lines), or only at the vertex.
A Stanford torus interior (cutaway view) Interior view of a large scale O'Neill cylinder, showing alternating land and window stripes. A space settlement (also called a space habitat, spacestead, space city or space colony) is a settlement in outer space, sustaining more extensively habitation facilities in space than a general space station or spacecraft.
Gas cylinder. Industrial compressed gas cylinders used for oxy-fuel welding and cutting of steel. A gas cylinder is a pressure vessel for storage and containment of gases at above atmospheric pressure. High- pressure gas cylinders are also called bottles. Inside the cylinder the stored contents may be in a state of compressed gas, vapor over ...
The Gudea cylinders are a pair of terracotta cylinders dating to c. 2125 BC, on which is written in cuneiform a Sumerian myth called the Building of Ningirsu 's temple. [1] The cylinders were made by Gudea, the ruler of Lagash, and were found in 1877 during excavations at Telloh (ancient Girsu), Iraq and are now displayed in the Louvre in Paris ...
The translation of the Nabonidus Cylinder of Sippar was made by Paul-Alain Beaulieu, author of, "The Reign of Nabonidus, King of Babylon 556-539 B.C." [4] [5] [i.1-7] I, Nabonidus, the great king, the strong king, the king of the universe, the king of Babylon, the king of the four corners, the caretaker of Esagila and Ezida, for whom Sin and Ningal in his mother's womb decreed a royal fate as ...