Electro-therapeutics, or, Electricity in its relation to medicine and surgery.

  • King, William Harvey, 1861-1942.
Date:
[1889], [©1889]
Catalogue details

Licence: Public Domain Mark

Credit: Electro-therapeutics, or, Electricity in its relation to medicine and surgery. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    strength of these shocks may be varied in five different ways: First, the shocks are decreased by removing the iron core and strengthened by replacing it. Second, by placing a brass or copper tube over the iron coil. Third, by placing the same tube between the primary and secondary coil. Fourth, by placing the same tube over the secondary coil. In w Fig. 14. the last three cases the shocks are strengthened as the tube is withdrawn and lessened as it is replaced over the coils. If this tube were divided its entire length so that it is not a com- plete circle, it will have no effect on the strength of the shocks. In all of the above cases the primary and secondary currents are affected in the same manner. Fifth, the shocks are modified by the distance the secondary coil is shoved over the primary.