Photochemische Versuchstechnik

Abstract

THIS book forms the complement of a previous volume by Dr. Plotnikow on the theory of photochemistry (“Photochemie,” W. Knapp in Halle a. S., 1910). In the present work he describes at length the apparatus and the experimental methods used in photochemical research. Part i. contains a useful summary of the characteristics of the various sources of light that may be employed. The mercury arc lamp, in which a steady electric current is passed through the vapour of mercury in a highly exhausted tube of Uviol glass or of fused quartz, is recommended as providing a constant and trustworthy source. Other sources discussed are the arc and spark between metal terminals, the carbon arc, the Nernst lamp, and the Röntgen ray tube. In part ii. Dr. Plotnikow describes the construction of the special forms of thermostat which he has devised for photochemical experiments, and enumerates a number of solutions that may be employed as light filters with the mercury vapour lamp in order to give approximately monochromatic light.

Photochemische Versuchstechnik.

By Dr. Johannes Plotnikow. Pp. xv + 371. (Leipzig: Akademische Verlagsgesellschaft m.b.H., 1912.) Price 11 marks.