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Until George Jacobs invented a practical enamel for the purpose, cloth was used to insulate magnet wire. This had a number of drawbacks such as, the cloth being too expensive, becoming worn, and bulky. Wire with enamel insulation could be more densely packed, allowing smaller, more efficient motors, coils and other electromagnetic devices.
A ewer with painted enamel was a wedding gift for William, Prince of Hohenzollern and Princess Maria Teresa of Bourbon-Two Sicilies. [24] The European enamel paintings in the collection include a portrait of Marshal Turenne by the Geneva-born artist Jean Petitot who worked for the English court of Charles I as well as for the French court. [25]
An ignition coil consists of an iron core surrounded by two coils (windings) made from copper wire.The primary winding has relatively few turns of heavy wire, while the secondary winding consists of thousands of turns of smaller wire and is insulated from the high voltage by enamel on the wires and layers of oiled paper insulation.
Aluminum or copper strip casting: Commercial twin-belt continuous strip casting machines are capable of producing as-cast dimensions from 10–35 mm thick, and up to 2035 mm wide. After being directly fed into a hot rolling mill, the as-cast strip is typically rolled down to 1–3 mm thickness strip.
A modern copper refinery tankhouse using IsaKidd technology. The IsaKidd Technology is a copper electrorefining and electrowinning technology that was developed independently by Copper Refineries Proprietary Limited (“CRL”), a Townsville, Queensland, subsidiary of MIM Holdings Limited (which is now part of the Glencore group of companies), and at the Falconbridge Limited (“Falconbridge ...
In January 1986 Testors released a model kit of a hypothetical F-19 Stealth Fighter, designed using open source intelligence [6] [7] before the real F-117 Nighthawk was introduced. Although it was very different from the actual plane, [8] video games and many other toys and models were inspired by this fictional design. Many features, such as ...
Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between 750 and 850 °C (1,380 and 1,560 °F). The powder melts, flows, and then hardens to a smooth, durable vitreous coating.
Romanesque champlevé enamel was applied to a cheap copper or copper alloy form, which was a great advantage, but for some pieces the prestige of precious metal was desired, and a small number of nielloed silver pieces from c. 1175–1200 adopt the ornamental vocabulary developed in Limoges enamel. [25]