A treatise on electricity wherein its various phoenomena are accounted for, and the cause of the attraction and gravitation of solids, assigned : To which is added, a short account, how the electrical effluvia act upon the animal frame, and in what disorders the same may probably be applied with success, and in what not / By Francis Penrose.

  • Penrose, Francis, 1718-1798.
Date:
1752
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on electricity wherein its various phoenomena are accounted for, and the cause of the attraction and gravitation of solids, assigned : To which is added, a short account, how the electrical effluvia act upon the animal frame, and in what disorders the same may probably be applied with success, and in what not / By Francis Penrose. Source: Wellcome Collection.

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    [ *6 ] light) the method of its firjl production, we Ihould not be at fuch a lofs to account for that light in electricity, as we hitherto feem to have been; for we are there told, that the heavens, or airs, were created in a ftate of darknefs, or inactivity; and that the firft thing God did, was to caufe a motion, or wW amongfl the airs; which motion was to continue, and encreafe, till it produced light; and, after this was produced, God called it Day, or as it is exp reded in the origi¬ nal, tumultuoufnefs; it being produced from the impetuous or violent motion of the airs : and the darknefs he called night, or, as it is likewife ex- prefled, the time when this languijhes or decays; for the congealing or thickning of the air, by which darknefs is produced, is in proportion as the force of the light abates. By all which, X think, we may be allured, that the light, and all the phenomena produced in eleClricity, are caufed by a violent friStion or grinding of the grains of air between the glafs globe and the hand. To illuftrate and prove, that this is the me¬ thod by which the electrical light is produced, X fhall bring fome experiments, from Mr. Haukf- bee^ which, I imagine, will make it indifputable. In his frit and fecond experiments, he fhews us, that by dropping mercury on a glafs in an ex- haufted