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Parkesine, the first member of the Celluloid class of compounds and considered the first man-made plastic, is patented by Alexander Parkes. [4] 1869: John Wesley Hyatt discovers a method to simplify the production of celluloid, making industrial production possible. 1872: PVC was accidentally synthesized in 1872 by German chemist Eugen Baumann ...
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 most commonly produced plastic consumer products include packaging made from LDPE (e.g. bags, containers, food packaging film), containers made from HDPE (e.g. milk bottles, shampoo bottles, ice cream tubs), and PET (e.g. bottles for water and other drinks). Together these products account for around 36% of plastics use in the world.
The metallic part may be silvered or silver-plated, and the silver-plating inside the glass stem can create the illusion that the chandelier is made entirely of glass. [51] A glass bowl at the bottom disguises the metal disc onto which the glass arms are attached. [4] The early glass chandeliers were molded and uncut, often with solid rope ...
The first plastic made from synthetic components, it was developed by Leo Baekeland in Yonkers, New York, in 1907, and patented on December 7, 1909. [ 3 ] Bakelite was one of the first plastic-like materials to be introduced into the modern world and was popular because it could be moulded and then hardened into any shape.
The Vulci set of jewelry; early 5th century; gold, glass, rock crystal, agate and carnelian; various dimensions; Metropolitan Museum of Art (New York City) Earring in the form of a dolphin; 5th century BC; gold; 2.1 by 1.4 by 4.9 centimetres (0.83 in × 0.55 in × 1.93 in); Metropolitan Museum of Art
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A pendant made from modern dichroic glass. Dichroic glass is glass which can display multiple different colors depending on lighting conditions.. One dichroic material is a modern composite non-translucent glass that is produced by stacking layers of metal oxides which give the glass shifting colors depending on the angle of view, causing an array of colors to be displayed as an example of ...