. Carnegie Institution of Washington publication. f a c? aTe,' yaT cf e'. e' g: a1 e,' cL' e'(jf a? Adjusting the siren for the maximum c", the sensitiveness with different resistances in circuit (2,000 to 9,000 ohms) was determined. The curve is shown in series 9, figure 18, and is the highest thus far obtained. The equation rs = constant does not fit so well here, a result inseparable from the slightly fluctuating note; for this makes much difference in the maximum. The mean value is about rs = 80 X io3. Referred to a circuit resistance of 100 ohms, this is equivalent to a deflection of
. Carnegie Institution of Washington publication. f a c? aTe,' yaT cf e'. e' g: a1 e,' cL' e'(jf a? Adjusting the siren for the maximum c", the sensitiveness with different resistances in circuit (2,000 to 9,000 ohms) was determined. The curve is shown in series 9, figure 18, and is the highest thus far obtained. The equation rs = constant does not fit so well here, a result inseparable from the slightly fluctuating note; for this makes much difference in the maximum. The mean value is about rs = 80 X io3. Referred to a circuit resistance of 100 ohms, this is equivalent to a deflection of 800 fringes and a pressure of Ap = cm. of mercury. In the course of the work this was at least doubled. Treated in the same way, the minimum at a", if the resistance in circuit were but 100 ohms, would produce negative deflection of 400 fringes, equiv- alent to a negative pressure increment of A£= — cm. of mercury. This also was later much increased. These are striking results deserving more careful investigation than I have thus far been able to give them. The pres- sure, decrements also, are real, as may be shown by inserting a stop-cock and. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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