tin plating
71Tinplate — is sheet steel covered with a thin layer of tin. Before the advent of cheap mild steel the backing metal was iron. While once more widely used, the primary use of tinplate now is the manufacture of tin cans. Tinplate is made by rolling the steel… …
72technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
73Electroplating — is the process of using electrical current to reduce cations of a desired material from a solution and coat a conductive object with a thin layer of the material, such as a metal. Electroplating is primarily used for depositing a layer of… …
74Metallurgy — Georg Agricola, author of De re metallica, an important early book on metal extraction Metallurgy is a domain of materials science that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their… …
75Titanium — This article is about the chemical element. For other uses, see Titanium (disambiguation). scandium ← titanium → vanadium …
76printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …
77Coins of the Canadian dollar — Canadian coinage is the coinage of Canada, produced by the Royal Canadian Mint and denominated in Canadian dollars ($) or cents (¢). Contents 1 Denominations 2 Changes in coinage 3 Production …
78Copper — For other uses, see Copper (disambiguation) …
79Penny (United States coin) — Cent (Penny) United States Value 0.01 of a U.S. dollar Mass  2.5 g  (0.080 troy oz) Diameter  19.05 mm  (0.750 in) Thickness …
80Silver — This article is about the chemical element. For the color, see Silver (color). For other uses, see Silver (disambiguation). palladium ← silver → cadmium …
