Chemical element of metals. Cu comes from Cuprum, Fe comes from Ferrum, Ag from Argentum. The symbols were not followed by a period (full stop) as with abbreviations. Later chemical elements were also assigned unique chemical symbols, based on the name of the element, but not necessarily in English. For example, sodium has the chemical symbol 'Na' after the Latin "natrium". The same applies to "W" (wolfram) for tungsten, "Fe" (ferrum) for iron, "Hg" (hydrargyrum) for mercury, "Sn" (stannum) for tin, "K" (kalium) for potassium, "Au" (aurum) for gold, "Ag" (argentum) for silver, "Pb" (plumbum) for lead, "Cu" (cuprum) for copper, and
Une rose au paradis Une rose au paradis Une rose au paradis is a science-fiction novel written by René Barjavel, and first published in 1981. Buried far beneath what used to be Paris, the last members of the human race live in an automated shelter. They are Mr. and Mrs. Jonas, their twin teenage children Jim and Jil, and Mr. Gé, who is directly responsible for setting the bombs that entirely destroyed the surface of the planet and at the same time for saving the Jonas family, whom he hopes will repopulate the world once it is safe to go out. But innocent games