Eight lectures on the signs of life from their electrical aspect eightlecturesons00wall Year: 1903 RETINAL DELAY 27 relating to the above described typical positive response to light that demand consideration. I will deal with them as briefly as possible. In the first place, it is of no moment as regards the response, whether the accidental current described in paragraph 13 happens to be positive or negative. Kiihne and Steiner, who paid particular attention to the point, refer to the fact under the heading, Law of Constant Alteration of Tension, and describe it thus :— ' Reversed direc
Eight lectures on the signs of life from their electrical aspect eightlecturesons00wall Year: 1903 RETINAL DELAY 27 relating to the above described typical positive response to light that demand consideration. I will deal with them as briefly as possible. In the first place, it is of no moment as regards the response, whether the accidental current described in paragraph 13 happens to be positive or negative. Kiihne and Steiner, who paid particular attention to the point, refer to the fact under the heading, Law of Constant Alteration of Tension, and describe it thus :— ' Reversed direction of the current of darkness (our accidental current) is without influence upon the magnitude and character of the photo-electrical variations, which reverse their signs.' That is to say, according to the German designation, that the response of a positive current of darkness is in the same direction as that
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