W. PREECE. - The effects of temperature on the electromotive force and resistance of batteries (Effets de la température sur la force électromotrice et la résistance des piles); Proceedings of the Royal Society, vol. XXXV, p. 48 ; 1883

1883 ◽  
Vol 2 (1) ◽  
pp. 475-476
Author(s):  
Foussereau
Keyword(s):  
Royal Society ◽  
Electromotive Force ◽  
Effects Of Temperature

II. The electrical measurement of starlight. Observations made at the Observatory of Daramona House, co. Westmeath, in January, 1896. Second report

1896 ◽  
Vol 59 (353-358) ◽  
pp. 231-233 ◽  
Keyword(s):  
Royal Society ◽  
Electromotive Force ◽  
Electrical Measurement ◽  
Stellar Radiation ◽  
In The Beginning

In the ‘Proceedings of the Royal Society,’ vol. 58, pp. 142, &c., will be found the first account of the measurement of stellar radiation by means of the electromotive force generated by the action of starlight on my photo-electric cells. The observations were resumed in the beginning of January, 1896, in Mr. W . E. Wilson’s observatory by the same three observer—namely, Mr. Wilson, Professor Fitzgerald, and myself.

scholarly journals II. Measurement of the electromotive force required to produce a spark in air between parallel metal plates at different distances

1860 ◽  
Vol 10 ◽  
pp. 326-338 ◽  
Keyword(s):  
Royal Society ◽  
Electromotive Force ◽  
Flat Surface ◽  
Lower Plate ◽  
Watch Glass ◽  
Screw Head ◽  
Micrometer Screw ◽  
Metal Plates ◽  
Electric Pressure ◽  
Flat Piece

The electrometers used in this investigation were the absolute electrometer and the portable electrometer described in my last communication to the Royal Society, and the operations were ex­ecuted by the same gentlemen, Mr. Smith and Mr. Ferguson. The conductors between which the sparks passed were two unvarnished plates of a condenser, of which one was moved by a micrometer screw, giving a motion of 1/25 of an inch per turn, and having its head divided into 40 equal parts of circumference. The readings on the screw-head could be readily taken to tenth parts of a division, that is to say, to 1/10000 of an inch on the distance to be measured. The point from which the spark would pass in successive trials being somewhat variable and often near the edges of the discs, a thin flat piece of metal, made very slightly convex on its upper surface like an extremely flat watch glass, was laid on the lower plate. It was then found that the spark always passed between the crown of this con­vex piece of metal and the flat upper plate. The curvature of the former was so small, that the physical circumstances of its own elec­trification near its crown, the opposite electrification of the opposed flat surface in the parts near the crown of the convex, and the electric pressure on or tension in the air between them could not, it was supposed, differ sensibly from those between two plane conducting surfaces at the same distance and maintained at the same differenee of potentials.

scholarly journals I. The action of tidal streams on metals during diffusion of salt and fresh water. Experimental research. Part II (gravimetric)

1885 ◽  
Vol 38 (235-238) ◽  
pp. 372-378
Keyword(s):  
Fresh Water ◽  
Experimental Research ◽  
Royal Society ◽  
Electromotive Force ◽  
Present Communication ◽  
Tidal Estuaries ◽  
Electrical Part ◽  
Tidal Streams ◽  
One Year

In a paper last session “On the Electromotive Force during Diffusion in Tidal Streams” (see “Proceedings Royal Society,” No. 232), the author recorded the electrical part of this investigation. The present communication contains the concluding gravimetric experiments of the research. The effects attending the diffusion of the salt and fresh water in tidal estuaries, on parts of the same metal, were estimated in each case for a period of one year , during which the metals were constantly exposed to conditions of galvanic action similar to those obtaining in some tidal streams.

scholarly journals III. Influence of the chemical energy of electrolytes upon the 'minimum point' and change of potential of a voltaic couple in water

1888 ◽  
Vol 44 (266-272) ◽  
pp. 300-308
Keyword(s):  
Hydrochloric Acid ◽  
Royal Society ◽  
Electromotive Force ◽  
Chemical Energy ◽  
Soluble Salt ◽  
Minimum Point ◽  
Distilled Water ◽  
Effect Of Chlorine

In a communication to the Royal Society, May 3rd, 1888, on "The Effect of Chlorine upon the Electromotive Force of a Voltaic Couple," and in a subsequent one on "The Minimum Point of Change of Potential of a Voltaic Couple," I have shown that by opposing to each other two currents of equal electromotive force from two perfectly similar couples of magnesium-platinum or zinc-platinum in distilled water, and gradually adding to one of the cells sufficiently minute quantities of a suitable substance, sue as chlorine, hydrochloric acid, or a soluble salt, &c., the voltaic balance is not disturbed until a certain definite proportion of the substance has been added, and that the proportion required to be added is excessively small (about 1 in 17,000 millions) in the case of chlorine with. a magnesium-platinum couple, and extremely different with unlike substances.

scholarly journals I. The effects of temperature on the electromotive force and resistance of batteries

1883 ◽  
Vol 35 (224-226) ◽  
pp. 48-62 ◽  
Keyword(s):  
Electromotive Force ◽  
Chemical Affinity ◽  
Cold Fluid ◽  
Effects Of Temperature

It is well known that heat influences the conditions of galvanic elements so as to vary the strength of the currents generated by them in those parts of the circuits connecting their poles. In 1840 De la Rive found that the action of a galvanic pair was accelerated when it was put into hot fluid instead of cold fluid, and he attributed the result to increased chemical affinity

scholarly journals III. The effects of temperature on the electromotive force and resistance of batteries. II

1883 ◽  
Vol 35 (224-226) ◽  
pp. 250-257
Keyword(s):  
Electromotive Force ◽  
Influence Of Temperature ◽  
Effects Of Temperature

In the discussion on my previous paper read on February 22, 1883, it was suggested that I should continue the observations on the influence of temperature to the case of secondary batteries. I am indebted to Mr. Tribe for one of his cells made so as to fit my apparatus, and charged at different times with solutions of various degrees of saturation.

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