. Carnegie Institution of Washington publication. INFLUENCE OF RED AND INFRA-RED RAYS UPON SIDOT BLENDE. 79 For the curve shown in Figs. 70 and 71 the exciting light was the violet of the carbon arc spectrum. For the curves of Figs. 72 to 75 a spark between cadmium terminals was used in excitation. The intensity of phospho- rescence has been plotted in all of these curves instead of the reciprocal square root, although in some cases the latter value has been plotted also. 100r I Fig. 70. Influence of exposure to infra- red on form of decay curve. Curve /. Ordinary decay curve for X = tx.
. Carnegie Institution of Washington publication. INFLUENCE OF RED AND INFRA-RED RAYS UPON SIDOT BLENDE. 79 For the curve shown in Figs. 70 and 71 the exciting light was the violet of the carbon arc spectrum. For the curves of Figs. 72 to 75 a spark between cadmium terminals was used in excitation. The intensity of phospho- rescence has been plotted in all of these curves instead of the reciprocal square root, although in some cases the latter value has been plotted also. 100r I Fig. 70. Influence of exposure to infra- red on form of decay curve. Curve /. Ordinary decay curve for X = tx. Curve /'. Screen exposed to infra-red immediately after end of 6 Sec? 100 I \ f / tJU \ &-' 40 \I \l to Fig. 71. Curve /. Ordinary decay curve for X = M- Curve /'. Screen exposed to infra-red after decay had proceeded to A. O, Sec. S. 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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