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  2. Dounce homogenizer - Wikipedia

    en.wikipedia.org/wiki/Dounce_homogenizer

    The Dounce homogenizers, devices used for mechanical lysis of tissue or cells, were invented by and named after Alexander Dounce. Invented by and named for Alexander Dounce [1] [2], a Dounce homogenizer or "Douncer", is a cylindrical glass tube, closed at one end, with two glass pestles of carefully specified outer diameters, intended for the gentle homogenization of eukaryotic cells (e.g ...

  3. Ceramics of Indigenous peoples of the Americas - Wikipedia

    en.wikipedia.org/wiki/Ceramics_of_indigenous...

    Negative painting is a technique employed by precontact Mississippian potters in the Eastern Woodlands, Mayan potters in Mesoamerica, and others, which involves covering the ceramic piece in beeswax or another resist, incising a design in the resist, then soaking the piece with a slip. In the firing process the resists melts away, leaving the ...

  4. Glass bead making - Wikipedia

    en.wikipedia.org/wiki/Glass_bead_making

    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 ...

  5. Powder glass beads - Wikipedia

    en.wikipedia.org/wiki/Powder_glass_beads

    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.

  6. Jasperware - Wikipedia

    en.wikipedia.org/wiki/Jasperware

    Wedgwood jasperware can often be dated by the style of potter's marks, although there are exceptions to the rules: Before 1860: Mark is "Wedgwood". Usually accompanied by other potter markings and a single letter. From 1860 to 1929: A three-letter mark represents in order, the month, the potter, and the year. The year code starts mid-alphabet ...

  7. Glossary of pottery terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_pottery_terms

    The material used to form an article of pottery. Thus a potter might prepare, or order from a supplier, such an amount of earthenware body, stoneware body or porcelain body. Coiling A hand method of forming pottery by building up the walls with coils of rope-like rolls of clay. Cone See pyrometric cone Crackle glaze

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  9. Indo-Pacific beads - Wikipedia

    en.wikipedia.org/wiki/Indo-Pacific_beads

    Indo-Pacific beads are a type of mainly tube drawn glass beads which originated in the Indian subcontinent but are manufactured widely in Southeast Asia.These are usually 6mm in diameter, undecorated and come in various colours for example green, yellow, black, opaque red, etc.

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