Word: enamels
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Dates: during 1920-1929
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Butchers, bakers and candlestick makers, waiters, tailors and candy-store clerks must beware their teeth. So said German scientist K. F. Hoffman last week. Indoor work tends to wear down bodily resistance. Poor ventilation helps teeth decay; dusts discolor teeth; sugar and flour ferment to form enamel-destroying acids...
...across his breast in the manner of the transverse strap of a Sam Brown Belt. Soon by a gold safety pin there was attached to M. Franqui the highest decoration in the gift of the Belgian Crown-the Order of Leopold. Twinkling it dangled, glittered: a gold edged white enamel cross suspended from a royal crown and resting on a green laurel and oak wreath, at the centre on a black field the golden lion of Belgium, below the motto L'Union Fait La Force. . . . King Albert of the Belgians stepped back from decorating M. Franqui. All the world...
...sealed tube was reduced to a surprisingly large quantity of yellow powder, resembling varnish, which resisted all chemical reagents and a heat of 4000°. The powder was a substance utterly unknown to chemists. Precipitated by the ray upon an aluminum disc, the powder became an enamel which could not be removed...
...insistently needs tin for bronzes, solders, collapsible tubes, pewter, babbitt and other bearing metals, type and brittania metals, tin foil for wrappings, soda fountain and chemical laboratory pipes, cans and boxes, white enamel, making silks heavy, mordants in dyeing textiles and printing calicoes. For these uses, this country last year imported 50% (76,646 long tons, value $95,121,000) of the total world supply of tin. This was an increase of nearly 20% over 1924 imports, whereas the world supply increased only 2% over that of 1924. On Dec. 31, 1925, there were only 2,654 tons...
...printing one after the other with different inks, would reproduce a subject in its natural colors. Half Tones. The basis of half-tone printing as evolved by Mr. Ives lies in photographing the copy (subject) and transferring the negative to a copper or zinc plate treated with light-sensitive enamel; etching away the proper portions of the plate with acid; mounting the plate, inking and running it through a press. To produce a clear image (keep the ink from smearing) it is necessary to make the plate a mass of tiny points, whose size and proximity determine the value...