abacus


Значение термина abacus в knolik


abacus - Abacus (Lat. abacus, Gr. abax, slab, board)
abacus - Mechanical contrivance for facilitating arithmetical calculations. It consists of an oblong wooden frame with several wires stretched across it lengthwise. Ten beads are strung upon each wire to allow full play for moving them into different positions and combinations. The abacus of ancient Greece and Rome survives in the Russian shckoti, the Chinese swanpan, and in Japan. The name was given by the Romans to a board strewn with sand for use with a stilus; in mathematical drawing, to a dice-board, and to a side-board.

Рядом со словом abacus в knolik


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abacus

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