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2. Vitreous enamel - Wikipedia

   en.wikipedia.org/wiki/Vitreous_enamel

   The powder melts, flows, and then hardens to a smooth, durable vitreous coating. The word vitreous comes from the Latin vitreus, meaning "glassy". Enamel can be used on metal, glass, ceramics, stone, or any material that will withstand the fusing temperature. In technical terms fired enamelware is an integrated layered composite of glass and ...

3. Aperiodic set of prototiles - Wikipedia

   en.wikipedia.org/wiki/Aperiodic_set_of_prototiles

   Berger later reduced his set to 104, and Hans Läuchli subsequently found an aperiodic set requiring only 40 Wang tiles. [9] The set of 13 tiles given in the illustration on the right is an aperiodic set published by Karel Culik, II, in 1996. However, a smaller aperiodic set, of six non-Wang tiles, was discovered by Raphael M. Robinson in 1971 ...

4. Mosaic gold - Wikipedia

   en.wikipedia.org/wiki/Mosaic_gold

   The term mosaic gold has also been used to refer to ormolu [3] and to cut shapes of gold leaf, some darkened for contrast, arranged as a mosaic. [4] The term bronze powder may also refer to powdered bronze alloy. A recipe for mosaic gold is already provided in the 3th century A.D. treatise Baopuzi, composed by the Chinese alchemist Ge Hong. [5]

5. Powder room - Wikipedia

   en.wikipedia.org/wiki/Powder_room

   A powder room may refer to: Powder Room, a 2013 film; A public toilet; A toilet (room), a room containing a toilet in a private dwelling, often for guests (U.S.)

6. Compaction of ceramic powders - Wikipedia

   en.wikipedia.org/wiki/Compaction_of_ceramic_powders

   The industrial technologies involved in the production of ceramics, with particular reference to tile and sanitaryware products, generate a huge amount of waste of material and energy. [note 1] Consequently, the set-up of manufacturing processes is very costly and time consuming and not yet optimal in terms of quality of the final piece.

7. Gold (color) - Wikipedia

   en.wikipedia.org/wiki/Gold_(color)

   This is an accepted version of this page This is the latest accepted revision, reviewed on 8 January 2025. Color "Gold tone" redirects here. For the type of photographic print, see Gold tone (print). For treatments that change the natural color of gold, see Colored gold. For the element, see Gold. This article needs additional citations for verification. Please help improve this article by ...