. An essay on electricity : explaining the theory and practice of that useful science; and the mode of applying it to medical purposes ; with An essay on magnetism . e of the copper fet of Experiments being compleated, hemade others, where the ball only was oppofed ;and after them, where the point only was op-pofed to the copper ball. Having f88 ANSSSAY ON Having gone through all thefe experiments,as they are fet down in the firil table, he thenrepeated the experiment with the chain, afterMr. Henlys manner. The refult of which,and with the apparatus reverfed, will appear-in the fecon
. An essay on electricity : explaining the theory and practice of that useful science; and the mode of applying it to medical purposes ; with An essay on magnetism . e of the copper fet of Experiments being compleated, hemade others, where the ball only was oppofed ;and after them, where the point only was op-pofed to the copper ball. Having f88 ANSSSAY ON Having gone through all thefe experiments,as they are fet down in the firil table, he thenrepeated the experiment with the chain, afterMr. Henlys manner. The refult of which,and with the apparatus reverfed, will appear-in the fecond table. TABLE ELECTRICITY. 189 TABLE I. EXPERIMENTS MADE AT DR, HIGGINS S, JUNE I 9,1778, WITH THE LEYDEN PHIAL AND FORKEDAPPARATUS. N-B. The meafures exprelTed in the following tables wer©taken from a fcale containing 32 parts in one inch. The number oppofite the word eledrometer, denotes thediftance between the balls which conftitute the eledtro-nieter ; and the numbers oppolite to the words l>all andpointy fliew the greatefl dillancc at which they were re-fpedively ftruck. Ball and Point oppojitethe Lcyden Phial, r Eledromcter L \ Ball [ Point — —. Ball Pt,only, only. 32 r32 [32 34i 48^ —45 1-188 28 r28 [28 3o\ 43^ —38 1-178 2^ f 26 c 2b28-^ 36< — 371—167 20 f20 f 20 2S< 29< 51L—U4 16 Cib fi6 22< 20<( 44 L— 147 13 f^3 f^S21^ i4<j — 38 I L30 10 f 10 f 10 I2<{ lO-j ? i8L-Us ? apparatusre-verfed. 10 33 TABLE 19a AN ESSAY on TABLE IT. EXPERIMENTS WITH THE CHAIN, AFTER MR. HENLys MANNER, P^lnt and Ball oppojttethe Ley den PhldU ^pparatui reverfed. [ ^3 j repeated — < 28 V at differ-—- I 26 I ^t times. r Eleflrometer ?—21 —i Ball — — 26 -«[^ Point — — 24 — TABLE IIL THE EXPERIMENTS OF THE 2(1 AND 3d TARLE3 REPEATED AT MR. PARTINGTONS, JUNE 23, 1778, A BRASS CHAIN BEING MADE USE OF INSTEAD OF THE FORKED APPARATUS. Ball and Voint oppojite B. P. Apparatus B, P, the Ley den PhiaU only, only, I. i Bail 40-^ 39^ — I Poi
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Keywords: ., booka, booksubjectelectricity, booksubjectmagnetism, bookyear1785
