Metallurgy of nickel
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C.
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Article
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1878
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Elsevier Science
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English
β 54 KB
Photo-Electricity.--The marked influence of sunlight on the electric conductivity of selenium, led Biirnstein to experiment with other metals. He concluded that all bodies were affected by photoelectricity, but G. Hausemann, at the suggestion of Dr. Werner Siemens, entered upon investigations which