. Medical electricity; a practical treatise on the applications of electricity to medicine and surgery. due to this. A me-chanical device is necessary to keep the terminal carbonsat the proper interval, since a gradual erosion of the carbonpoint is going on. In Dubosqs lamp, and others of thesame pattern (Fig. 94), a clock-work is so arranged as toeffect this object. If the terminals are connected by platinum or a fine filmof carbon, the large quantity of electricity passing is so con-densed as to heat the material conducting it to an intensedegree, which renders it brilliantly luminous. Stora
. Medical electricity; a practical treatise on the applications of electricity to medicine and surgery. due to this. A me-chanical device is necessary to keep the terminal carbonsat the proper interval, since a gradual erosion of the carbonpoint is going on. In Dubosqs lamp, and others of thesame pattern (Fig. 94), a clock-work is so arranged as toeffect this object. If the terminals are connected by platinum or a fine filmof carbon, the large quantity of electricity passing is so con-densed as to heat the material conducting it to an intensedegree, which renders it brilliantly luminous. Storage Cells.—It has been ascertained that certainelements may be charged by another battery, so as to fur-nish a current of considerable quantity for several principle is that of polarization, and may be explainedas follows: When two strips of platinum in water are made MEDICAL ELECTRIC HEATING AND LIGHTING. 288 the terminals of a battery, it is found that the strip con-nected with the anode is covered with minute bubbles ofoxygen gas, and the other, connected with the cathode, is Fig. Klectric lamps covered with bubbles of hydrogen gas. If now the stripsare separated from the battery, and connected with a gal-vanometer, it is at once seen that a current of polarizationis passing from the hydrogen to the oxygen through theliquid, which is opposite in direction to the battery current. 284 ELECTRICITY IN SURGERY. It has been further ascertained by Plante that this polariza-tion current may last a long time if the plates are largeenough. Availing himself of these facts, Plante has con-structed secondary cells as they are entitled, which fur-nish a large volume of electricity, sufficient, indeed, to beused for the purpose of illumination and the principle here involved is of great importance, andas it is likely to enter largely into the construction of medi-cal electrical apparatus, the reader ought to have a clearcomprehension of it and of the appar
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectro, bookyear1887
