Ads
related to: roman hand abacus
Search results
Results From The WOW.Com Content Network
The Late Roman hand abacus shown here as a reconstruction contains seven longer and seven shorter grooves used for whole number counting, the former having up to four beads in each, and the latter having just one. The rightmost two grooves were for fractional counting. The abacus was made of a metal plate where the beads ran in slots.
In classical architecture, the shape of the abacus and its edge profile varies in the different classical orders. In the Greek Doric order, the abacus is a plain square slab without mouldings, supported on an echinus. [2] In the Roman and Renaissance Doric orders, it is crowned by a moulding (known as "crown moulding").
This is supported even more firmly by the replica Roman hand abacus at Jörn's Online Museum shown alone here Replica Roman Abacus. As is obvious, the lower right hand slot has 2 beads, while the upper two slots have only 1 bead. This makes sense only if the lower slot is used for counting 1/12 s of an uncia.
An abacus (pl. abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Hindu–Arabic numeral system. [1] An abacus consists of a two-dimensional array of slidable beads (or similar objects). In their ...
The two earliest Egyptian capitals of importance are those based on the lotus and papyrus plants respectively, and these, with the palm tree capital, were the chief types employed by the Egyptians, until under the Ptolemies in the 3rd to 1st centuries BC, various other river plants were also employed, and the conventional lotus capital went through various modifications.
The lifelike hand had been found in a ditch near a temple dedicated to Jupiter Dolichenus, a Roman god worshipped by a mysterious, weather-related cult. Archaeologists have unearthed a 3rd century ...
The column and forum of Arcadius were on the Seventh Hill of Constantinople, also known as the Xerolophos (Greek Ξηρόλοφος). [2] [3] The column's construction was begun after 401 to commemorate Arcadius's triumph over the Goths under the renegade magister militum Gainas in the wars of 399–401. [1]
Ancient Roman decorative mosaic panels and floor mosaics were also produced during the 2nd century BC, particularly at sites such as Pompeii. Marble or limestone were cut into small cubes and arranged into representational designs and geometric patterns. Later, tesserae were made from colored glass, or clear glass backed with metal foils.