Publisher's Synopsis
Excerpt from Spectral Photoelectric Sensitivity of Silver Sulphide and Several Other Substances
The sample examined was a bundle of acicular crystals, ro'by. 2. 5 by '2 mm. The electrodes were No. 36 copper wire tightly wound in grooves filed close to the ends of the crystal. This outfit was mounted securel'y upon a fiber base.
In the. Previous examination, using heterogeneous light, this mineral was found to be only slightly sensitive photoelectrically. The present tests were disappointing in that for the highest spec tral intensities obtainable no evidence of photoelectrical sensitivity was found at 160° C.
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