Metal brackets hold the instrument together at the corner, with two wooden supports at the back. Two thinner cross pieces divide the groups of seven into groups of two and five. A relatively thick wooden cross piece down the center divides the beads into groups of seven. It apparently was designed for use by two people at once. Suan-p'an, or Chinese Abacus (Double) Description This double abacus has a wooden frame with 25 columns of wooden beads which slide on bamboo rods. Location Currently not on view date made 1958 ID Number 1989.0709.01 catalog number 1989.0709.01 accession number 1989.0709 Data Source National Museum of American History Crook (1886-1976)," digitized by the Stanford Historical Society. On Crook, see: Stanford University Faculty Memorials, “Memorial Resolution Welton J. The abacus and the related book were given to the Smithsonian by Washington, D. For a copy of this paperback, see 1989.0709.03. His short book was published in 1958 by Pacific Books in Palo Alto, California, and sold tens of thousands of copies. Crook became fascinated with the abacus on a visit to Hong Kong, and resolved to publish a clear exposition on the instrument in English. This form of abacus was sold in combination with a book entitled Abacus Arithmetic by the Australian-born metallurgist, Stanford University graduate, and later Stanford professor of metallurgy Welton J. The beads are rounded, as on other Chinese abaci. Each column has two beads above the crossbar and five beads below. A wooden cross bar holds 13 columns of beads. Suan-p'an, or Chinese Abacus Description This instrument has an open wooden frame held together with brass nails passing through metal bands.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |