Telephone experiments

✍ Scribed by C.

• Publisher: Elsevier Science
• Year: 1878
• Tongue: English
• Weight: 54 KB
• Volume: 105
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(78)90237-5

✦ Synopsis

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 appear to contradict BSrnstein's views. Dr. L. A. Forssmann, of Stockholm, finds that even the selenium experiments do not seem to depend upon the influence of either the luminous, the thermal or the chemical rays ; but upon waves of some other octave, or even, perhaps, upon longitudinal vibrations.--Ann, der _Phys. u. Crhem.

C.