Base-metals Sentence Examples

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.

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.

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.

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.

A longtime goal of the alchemists was the transmutation of base metals into precious metals.

The rest of the earring can be made from base metals or plastics as these are not in direct contact with the skin.

If poor quality base metals are used skin irritations can be caused which are unpleasant and irritating.

Some base metals may cause a skin allergy.