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An Account of a Method of Etching Or Engraving Vi‚ Sicc‚, by Means of ...
James H. Pring
No preview available - 2017
An Account of a Method of Etching Or Engraving, Via Sicca, by Means of ...
James H. Pring
No preview available - 2015
accompanying anode apparatus employed appears application arrangement attached brief notice cathode circumstances crotchet needle-holder deflagration deposit direct contact direct voltaic action effect produced effect thus produced electrical science electro-engraving electro-magnetic coil electrode or pole electrotype Elements of Electro-metallurgy employment ETCHING OR ENGRAVING etching or graving etching tool fluence forming the subject furnished galvanic battery galvanic current gold graving tool handle hydrogen instance likewise mark metallic salt method of engraving METHOD OF ETCHING mode once apparent operating on metals ordinary ornamental designs oxide of copper oxygen plate or blade platinized silver ployed polished steel present process Professor Faraday reduction of metals regards relations to electrical render Royal Society scientific point secondary effect attributable Sicca Smee Society in 1846 solution spark steel plate tion transfer various metals vić humidd voltaic current VOLTAIC ELECTRICITY voltaic power WESTON-SUPER-MARE whilst wholly wire employed wire in connection zinc extremity
Page 14 - aqueous solution of a metallic salt, for instance, copper, being subjected to a voltaic current, has hydrogen presented at the cathode, and oxygen at the anode. But at the same time this change is taking place, oxide of copper is passing to the cathode and sulphuric acid to the anode. The hydrogen seizes upon the oxygen of the oxide of copper, and forms water, whilst
Page 14 - we find a body at the pole of a battery, it is by no means certain that it has passed by direct decomposition of the Voltaic current ; because, if the compound of which it formed a part was dissolved in water, the elements of the latter being set free, often act in an important way to form new combinations, which result from the secondary effects ; thus
Page 8 - to the platinized silver, a very different effect is produced. With the apparatus thus arranged, the spark that results from the contact of the wire with the steel plate is accompanied
Page 14 - metallic copper is thrown down on the electrode or pole, not by direct voltaic action,
Page 15 - not by direct voltaic action, but as a secondary effect attributable to the hydrogen,
Page 9 - by a deposition of a minute portion of the substance of the wire on the steel