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| IV: Tin oxide | e twentieth-century artists painted on tin-glazed pottery, for example, Picasso, who produced much work of this kind in the 1940s and 1950s. ==The Nature of Tin Glaze== Tin oxide (IV), has found widespread use in glaze, where it has been valued as an opacifier. The opacity of glaze could be determined by the particles which spread through the glaze, therefore the light is abso |