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Vases in use are sometimes depicted in paintings on vases, which can help scholars interpret written descriptions. Much of our written information about Greek pots come from such late writers as Athenaios and Pollux and other lexicographers who described vases unknown to them, and their accounts are often contradictory or confused. With those ...
Diagram of the parts of a typical Athenian vase, in this case a volute krater. The names we use for Greek vase shapes are often a matter of convention rather than historical fact. A few do illustrate their own use or are labeled with their original names, while others are the result of early archaeologists' attempt to reconcile the physical ...
A right circular hollow cylinder (or cylindrical shell) is a three-dimensional region bounded by two right circular cylinders having the same axis and two parallel annular bases perpendicular to the cylinders' common axis, as in the diagram. Let the height be h, internal radius r, and external radius R.
Graphs of surface area, A against volume, V of the Platonic solids and a sphere, showing that the surface area decreases for rounder shapes, and the surface-area-to-volume ratio decreases with increasing volume. Their intercepts with the dashed lines show that when the volume increases 8 (2³) times, the surface area increases 4 (2²) times.
A cylindrical grinder used to grind, or mill, raw materials for use in ceramic bodies or glazes. Size reduction of the feed materials is achieved by a combination of impact and attrition resulting from the tumbling of hard media, such as pebbles, inside the mill during the rotation of the mill.
A bronze casting showing the sprue and risers. A riser, also known as a feeder, [1] is a reservoir built into a metal casting mold to prevent cavities due to shrinkage.Most metals are less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify.
A new shape is the straight-sided cylindrical cup. [ 26 ] MMIA wares and local pottery imitating them are found at coastal sites in the eastern Peloponnese , though not more widely in the Aegean until MMIB; their influence on local pottery in the nearby Cyclades has been studied by Angelia G. Papagiannopoulou (1991).
In geometry, a slab is a region between two parallel lines in the Euclidean plane, [1] or between two parallel planes in three-dimensional Euclidean space or between two hyperplanes in higher dimensions.