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Powder glass beads are made from finely ground glass, the main source being broken and unusable bottles and a great variety of other scrap glasses. Special glasses such as old cobalt medicine bottles, cold cream jars, and many other types of glasses from plates, ashtrays, window panes - to name only a few - are occasionally bought new, just for ...
An abacus consists of a two-dimensional array of slidable beads (or similar objects). In their earliest designs, the beads could be loose on a flat surface or sliding in grooves. Later the beads were made to slide on rods and built into a frame, allowing faster manipulation.
Abacus seeds (Chinese: 算盘子) or abacus beads is a Hakka Chinese dish consisting of dimpled, disc-shaped dumplings made with taro and tapioca flour. The dumplings are boiled then stir-fried with minced pork, shiitake or wood ear mushrooms , dried shrimp , dried cuttlefish and firm bean curd .
Greek worry beads generally have an odd number of beads, often one more than a multiple of four (e.g. (4×4)+1, (5×4)+1, and so on) or a prime number (usually 17, 19 or 23), and usually have a head composed of a fixed bead (παπάς "priest"), a shield (θυρεός) to separate the two threads and help the beads to flow freely, and a tassel ...
A very important advance in glass manufacture was the technique of adding lead oxide to the molten glass; this improved the appearance of the glass and made it easier to melt using sea-coal as a furnace fuel. This technique also increased the "working period" of the glass, making it easier to manipulate.
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.
A selection of glass beads Merovingian bead Trade beads, 18th century Trade beads, 18th century. A bead is a small, decorative object that is formed in a variety of shapes and sizes of a material such as stone, bone, shell, glass, plastic, wood, or pearl and with a small hole for threading or stringing.
Lampworked dichroic glass bead showing thin film application Furnace glass beads. A variant of the wound glass bead making technique, and a labor-intensive one, is what is traditionally called lampworking. In the Venetian industry, where very large quantities of beads were produced in the 19th century for the African trade, the core of a ...