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Uranium (0.1 to 2%) can be added to give glass a fluorescent yellow or green color. [8] Uranium glass is typically not radioactive enough to be dangerous, but if ground into a powder, such as by polishing with sandpaper, and inhaled, it can be carcinogenic. When used with lead glass with very high proportion of lead, produces a deep red color.
The Arab poet al-Buhturi (820–897) described the clarity of such glass: "Its color hides the glass as if it is standing in it without a container." [ 41 ] In the 8th century, the Persian - Arab chemist Jābir ibn Hayyān (Geber) described 46 recipes for producing colored glass in Kitab al-Durra al-Maknuna ( The Book of the Hidden Pearl ), in ...
Sommerso ("submerged" in Italian), is a form of artistic Murano glass that has layers of different colors (typically two), which are formed by dipping colored glass into another molten glass and then blowing the combination into a desired shape. The outermost layer, or casing, is often clear.
The remaining frequencies (or wavelengths) are free to be reflected or transmitted. This is how colored glass is produced. Most liquids and aqueous solutions are highly transparent. For example, water, cooking oil, rubbing alcohol, air, and natural gas are all clear.
Depression glass is glassware made in the period 1929–1939, often clear or colored translucent machine-made glassware that was distributed free, or at low cost, in the United States and Canada around the time of the Great Depression. Depression glass is so called because collectors generally associate mass-produced glassware in pink, yellow ...
Stiegel's glass works in the Province of Pennsylvania was the first in America to make fine lead crystal, which is often mislabeled as flint glass. [64] Amelung invested more money in glassmaking than anyone ever had and produced impressive quality glass with engraving —although his Maryland glass works failed after 11 years. [ 65 ]
Once this method was found for making red glass, other colours were made this way as well. A great advantage is that the double-layered glass can be engraved or abraded to reveal the clear or tinted glass below. The method allows rich detailing and patterns to be achieved without needing to add more lead-lines, giving artists greater freedom in ...
Flashed glass fused a thin outer layer of glass to a thicker glass object, often of a different color. The larger object was dipped into molten glass, then heated to fuse the outer layer to the object. The outer layer could then be etched, often diamond, to reveal the color beneath. Glass marquetry was a technique developed by Émile Gallé in ...
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