Abstracts of Technical Articles From Bell System Sources (01 January 1930)

And in the work here reported 0 has been measured in the range 0.33 X to 1 X. Experiment has shown that in this range 0 is that theoretically calculable for a Hertzian doublet. Actually this range is equivalent to X/3 to co. The discussion of experimental procedure is purposely thorough. 

An Experimental Method for the Determination of the Ballistic Demagnetization Factor* DONALD FOSTER. A method is described for experimentally determining the ballistic demagnetization factor. By means of a double search coil of novel design the magnetization and 1 Proceedings of the Institute of Radio Engineers, September, 1929. - Proceedings of the Institute of Radio Engineers, August, 1929. 3 Philosophical Magazine, September, 1929.