Practical notes on the use of galvanism and faradism in the diagnosis and treatment of disease / by Julius Althaus.

  • Althaus, Julius.
Date:
1876
Catalogue details

Licence: Public Domain Mark

Credit: Practical notes on the use of galvanism and faradism in the diagnosis and treatment of disease / by Julius Althaus. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    thereby generate new electric currents in the coil of copper wire. This is the reason why this form of electricity is likewise called electro- magnetism. It is further noticed that, when the instrument is arranged in this manner, two principal currents come into play, viz., one in the first wire which is connected with the bat- tery, and is called the primary or extra current ; and another in the second wire communicating with the first, and this latter is called the induced or secondary current. Faraday likewise discovered a form of elec- tricity which is produced by the influence of a permanent magnet of steel upon a coil of copper wires, without the intervention of a battery; and which, in order to distinguish it from electro-magnetism, is called magneto- electricity. This magneto-electric or magneto- faradic current was formerly much used in medicine, but has recently been discarded, as being in all respects inferior to its twin-brother, electro-magnetism. All the different forms of electricty are pro- pagated with far greater velocity than any other agent with which we are acquainted, light itself not excepted. According to the calculations of Sir Charles Wheatstone, elec- tricity travels at the rate of 288,000 miles per
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