. Electro-physiology. Electrophysiology. Fig. 2. Fig. 3. electrodes are connected with the two outer of the four binding-screws, and the two inner ones joined together, the current to be investigated will pass through both coils; by removing the connecting wire between the two inner screws,the instrument may be converted into a differential galvanometer, and the relative intensities of two currents easily deter- mined. The particular galvanometer which is used in the physiological laboratorjr of the Jefferson Medical College has a resistance of 6821 ohms at a temperature of 18° C. A single Dan
. Electro-physiology. Electrophysiology. Fig. 2. Fig. 3. electrodes are connected with the two outer of the four binding-screws, and the two inner ones joined together, the current to be investigated will pass through both coils; by removing the connecting wire between the two inner screws,the instrument may be converted into a differential galvanometer, and the relative intensities of two currents easily deter- mined. The particular galvanometer which is used in the physiological laboratorjr of the Jefferson Medical College has a resistance of 6821 ohms at a temperature of 18° C. A single Daniell element produces through a circuit of 204,660,000 ohms resistance a deflection of 180 degrees on the scale, or a deflection of 1 division thi'ough a circuit of 36,838,800,000 ohms resistance. Owing to the extreme delicacy of tliis instrument it is provided with a shunt, by means of which a fractional part only of the current to be investigated is permitted to pass into the galvanometer. The coils of wire of which the shunt is composed are of varying lengths, and so ai'ranged that they can be united by brass plugs. The resistance of the coils is so graduated, with reference to the resistance of the galva-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Brubaker, Albert P. (Albert Philson), 1852-1943.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectelectro, bookyear1894
