Eight lectures on the signs Eight lectures on the signs of life from their electrical aspect eightlectureson00wall Year: 1903 158 THE SIGNS OF LIFE Fig. 59.—Photographic record of the galvanometric deflections in + and - directions, caused by (approximate) voltages of , , , , and again , through a circuit of (approximately) one Megohm ( = 1000000 ohms).

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