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Updated: June 6, 2025
'You mistake me, she said quickly; and with a sudden movement she went up to him and put her hand on his shoulder. The caress, so innocent, unpremeditated, and instinctive, ran through him like a voltaic shock. These two were almost strangers; they had scarcely met till within the past week, Mark being seldom in Bursley. 'You mistake me it is a shame of him! I'm fearfully angry.
We cannot have a magnet with one pole: if we break a natural loadstone into a thousand pieces, each piece will have its two oppositely electrified poles complete within itself. In the voltaic circuit, again, we cannot have one current without its opposite. In the ordinary electric machine, the glass cylinder or plate, and the rubber, acquire opposite electricities.
Thus, if galena and zinc blende in acid solutions be connected in the usual manner by a voltaic pair, sulphuretted hydrogen is evolved from the surface of the former, and a current generated which is sufficient to reduce gold, silver or copper from their solutions in coherent electro-plate films.
If the rock in the fair-way is got ready before my return, blast it at once, without waiting for me. You will find one of Siebe and Gorman's voltaic batteries in my lodging, also a frictional electrical machine, which you can use if you prefer it. In the store there is a large supply of tin-cases for gunpowder and compressed gun-cotton charges.
The terms Anion and Cation, which he applied to the constituents of the decomposed electrolyte, and the term Ion, which included both anions and cations, are still less frequently employed. Faraday now passes from terminology to research; he sees the necessity of quantitative determinations, and seeks to supply himself with a measure of voltaic electricity.
Carbon was the first non-metallic element discovered in the sun. Messrs. Trowbridge and Hutchins of Harvard College concluded in 1887, on the ground of certain spectral coincidences, that this protean substance is vaporised in the solar atmosphere at a temperature approximately that of the voltaic arc.
Let us from this point of view contemplate the following series of chemical elements, which is a representation of the so-called voltaic series: Graphite, Platinum, Gold, Silver, Copper, Iron, Tin, Lead, Zinc, Aluminium, Magnesium, Sodium, Potassium. Any two of these metals constitute a voltaic cell. Its electromotive force is determined by the distance in the series between the metals used.
On either side innumerable huge Leyden jars stood ranged in rows, tier topping tier, while above them were columns of Voltaic cells. Robert's eyes, as he glanced around, lit on vast wheels, complicated networks of wire, stands, test-tubes, coloured bottles, graduated glasses, Bunsen burners, porcelain insulators, and all the varied debris of a chemical and electrical workshop.
He thought that with a single voltaic cell he had obtained the spark before the metals touched, but he subsequently discovered his error.
The energy of burning coal, through the steam-engine, working the dynamo, is far cheaper and more efficient for producing electricity than the consumption of metals through the voltaic pile.
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