Boron, arsenic, and antimony, among other substances, are used as dopants when added to a pure semiconductor material to alter its electrical characteristics.
Artificially produced gemstones[?] (such as Ruby (gemstone)) usually contain a dopant to identify them as such.
... Tasmania and New Zealand
Luis Vaez de Torres[?], sea explorer
V
Giovanni da Verrazano, (died 1528), sea explorer
Amerigo Vespucci, (1454-1512), discovered ...