Base-metals sentence example

base-metals
  • In the narrow sense of the word, alchemy is the pretended art of making gold and silver, or transmuting the base metals into the noble ones.
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  • Some are in Greek and demotic, and one, of peculiar interest from the chemical point of view, gives a number of receipts, in Greek, for the manipulation of base metals to form alloys which simulate gold and are intended to be used in the manufacture of imitation jewellery.
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  • The second process depends upon the fact that, if chlorine be led into the molten alloy, the base metals and the silver are converted into chlorides.
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  • It is especially suitable to gold containing little silver and base metals - a character of Australian gold - but it yields to the sulphuric acid and electrolytic methods in point of economy.
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  • transmutation of base metals into precious metals.
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  • A longtime goal of the alchemists was the transmutation of base metals into precious metals.
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  • The rest of the earring can be made from base metals or plastics as these are not in direct contact with the skin.
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  • If poor quality base metals are used skin irritations can be caused which are unpleasant and irritating.
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  • Some base metals may cause a skin allergy.
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