Author_Institution :
Emory University, Department of Anatomy, Atlanta, USA
Abstract :
This lecture was given by Balth. van der Pol on the 8th December 1938, on his acceptance of the Chair of Electrical Engineering with the Delft Institute. The lecture was printed for local distribution by Martinus Nijhoff, The Hague, in 1938, and this translation is from that edition. The lecture has been edited to about four-fifths its original length
