An essay on electricity : explaining the principles of that useful science, and describing the instruments, contrived either to illustrate the theory, or render the practice entertaining : illustrated with six plates. To which is added, a letter to the author, from Mr. John Birch, surgeon, on the subject of medical electricity / by the late George Adams.

  • Adams, George, 1750-1795.
Date:
1799
Catalogue details

Licence: Public Domain Mark

Credit: An essay on electricity : explaining the principles of that useful science, and describing the instruments, contrived either to illustrate the theory, or render the practice entertaining : illustrated with six plates. To which is added, a letter to the author, from Mr. John Birch, surgeon, on the subject of medical electricity / by the late George Adams. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    1 r OF THE ELECTEIC FLUID. 71 I .Exteriment X. On the effects of a solution of continuity. Break a stick of sealing-wax in two pieces; those extremities that were contiguous will be found electrified with contrary powers; one will be positively^ the other negatively^ elec- trified. ' Since the third edition of this work, Mr. Ni- cholson has made many experiments on the nature of excitation, and on the most efficacious me- thods of exciting an electric machine powerfully; they were communicated to the Royal Society, and read before them, June 25, 1789^ and have since been published in the Philosophical Trans- actions; I have, therefore thought it a duty to add them to this edition of the work, as contain- ing much important matter. EXPERIMENTS AND OBSERVATIONS ON THE EXCITATION OF ELECTRICITY, BY WILLIAM NICHOLSON. ON THE EXCITATION OF ELECTRICITY. 1. A glass cylinder was mounted, and a cushion applied with a silk flap, proceeding from the edge of the cushion over its surface, and thence half round the cylinder. The cylinder was then excited by applying an amalgamed leather in the usual manner. The electricity was received by a