Das Verhalten ionisierter flüssiger Dielektrika beim Durchgang elektrischer Ströme (The behavior of ionized liquid dielectrics during the passage of electric currents) 1912.

A scientific paper by the prominent South African scientist and industrialist Hendrik van der Bijl.
This is an offprint ("Separat-Abdruck") from the journal Annalen der Physik, Fourth Series, Volume 39.
Dated 1912.
Published in Leipzig by Johann Ambrosius Barth.

This paper represents early research by Hendrik van der Bijl during his time in Germany, where he studied under Max Planck. Van der Bijl is best known for his later contributions to vacuum tube technology and for his pivotal role in South African industry as the first chairman of Escom (now Eskom) and the founder of ISCOR (the South African Iron and Steel Industrial Corporation).

The paper explores the movement and recombination of ions within liquid dielectrics when subjected to electrical currents. The text includes derivations for kinetic energy and potential energy of ionic systems. Specifically, it defines the condition for the recombination of ions using the inequality:

where \bm{R} relates to the "Langevin sphere" or radius.

Footnotes detail specific measurements of ionization in substances like carbon disulfide, hexane, and tetrachloromethane.

Some tearing at the edges of the cover.
Several library or archival markings in blue ink and pencil, including the phrase "Überreicht von dem Verfasser" (Presented by the author), suggesting this may have been a presentation copy.

145mm x 222mm

R800