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In addition, beads can be fused from sheet glass or using ground glass. Modern Ghana has an industry in beads molded from powdered glass. Also in Africa, Kiffa beads are made in Mauritania, historically by women, using powdered glass that the bead maker usually grinds from commercially available glass seed beads and recycled glass.
They are also used as a material to increase the scanning range of barcodes in factory settings. The sheeting consists of retroreflective glass beads, microprisms, or encapsulated lenses sealed onto a fabric or plastic substrate. Many different colors and degrees of reflection intensity are provided by numerous manufacturers for various ...
Retroglo is composed of 50,000 minute glass beads per square inch. The material is retroreflective, meaning it reflects light back to a light source, such as toward a car's headlights. The glass beads used in Retroglo are much smaller than the beads used in reflective road surface marking paint used on highways. Retroglo can be woven, braided ...
The production of beads from imported glass shards, cullet (scraps) and undesired glass beads has a lively presence in the history of Sub-Saharan Africa. Imported glass was either formed by melting such imported glass, potentially adding desired colorants, and then shaping the melt into a bead form; or, by grinding down the imported glass to ...
Kiffa beads represent one of the highest levels of artistic skill and ingenuity in beadmaking, being manufactured with the simplest materials and tools available: pulverized European glass beads or fragments of them, bottle glass, pottery shards, tin cans, twigs, steel needles, some gum arabic, and open fires.
Krobo powder glass beads, bicones. Powder glass beads are a type of necklace ornamentation. The earliest such beads were discovered during archaeological excavations at Mapungubwe in South Africa, and dated to between 970-1000 CE. Manufacturing of the powder glass beads is now concentrated in West Africa, particularly in the Ghana area.
The term rosetta first appeared in the inventory of the Barovier Glass works in Murano, in 1496, in context with beads as well as with other glass objects. Venetian chevron beads are drawn beads, made from glass canes, which are shaped using specifically constructed star moulds. The first chevron beads were made towards the end of the 15th ...
Prince Rupert's drops. Prince Rupert's drops (also known as Dutch tears or Batavian tears) [1] [2] are toughened glass beads created by dripping molten glass into cold water, which causes it to solidify into a tadpole-shaped droplet with a long, thin tail.