Search results
Results from the WOW.Com Content Network
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 ...
More recently, aluminium yarns, aluminized plastic yarns, and aluminized nylon yarns have replaced gold and silver. Today's metal fiber industry mainly offers fibers in stainless steel, nickel, titanium, copper and aluminium for various applications. [2] Metallic filaments can be coated with transparent films to minimize tarnishing.
Jewelry wire is wire, usually copper, brass, nickel, aluminium, silver, or gold, used in jewelry making. Wire is defined today as a single, usually cylindrical, elongated strand of drawn metal . However, when wire was first invented over 2,000 years BC, it was made from gold nuggets pounded into flat sheets, which were then cut into strips.
Copper wires Copper cable Coaxial cable made from copper. Copper has been used in electrical wiring since the invention of the electromagnet and the telegraph in the 1820s. [1] [2] The invention of the telephone in 1876 created further demand for copper wire as an electrical conductor. [3]
Although, the advantages of copper were many, the material was too soft to find large scale usefulness. Through experimentation or by chance, additions to copper lead to increased hardness of a new metal alloy, called bronze. [3] Bronze was originally composed of copper and arsenic, forming arsenic bronze. [4]
Copper wire can be hammered quite thin. Brass wire is a little stiffer than copper, but it can be manipulated very easily. Sterling silver is soft enough to manipulate, but holds its shape well once it has been formed. Gold-filled wire is made by fusing a layer of 12-or 14-karat gold to a supporting material. Silver-filled wire is made in the ...
Crystalate is an early plastic. [78] Faturan is a phenolic resin, also similar to Bakelite, that turns red over time, regardless of its original color. [79] Galalith is an early plastic derived from milk products. [80] Micarta is an early composite insulating plate that used
The metal usually used for making the body is copper, since it is cheap, light and easily hammered and stretched, but gold, silver or other metals may be used. Cloisonné wire is made from fine silver or fine gold and is usually about .010 x .040 inches in cross section. It is bent into shapes that define the colored areas.