Nikola Tesla Books
[Sec. 7., cont.] could have been the result of a measurements by means of a cyclically repetitive detector described in Nikola Tesla's patent No. 685,953, "Method of Intensifying and Utilizing Effects Transmitted Through Natural Media," applied for June 24, 1899 (while in Colorado Springs), and granted November 5, 1901. Notice that the application date preceded the date that Nikola Tesla believed he detected stationary waves generated in the earth by a July 3, 1899, lightning storm.
Dr. Corum and Aidinejad show that the 0.08484 second time interval could have resulted from a measurement of the first Schumann cavity resonance mode. They point out how a misinterpretation of the interval of reflected pulse signals, common to all pulse type range measuring devices, could have given this interval value, whereas in actuality it most probably was 0.13333 sec. + 0.08484 sec. = 0.21817 sec. (where the first term is 1/7.5, the period of the fundamental Schumann resonance mode frequency, and the second term is the period of return from the preceding pulse rather than the immediate pulse.)
Nikola Tesla employed instrumentation at Colorado Springs of sufficient accuracy to measure pulse-time intervals for waves under 10 Hz. With this in mind, it is not convincing to this writer that Nikola Tesla deliberately excited the first Schumann resonance mode at 7.5 Hz with his relaxation oscillator, rather than accidentally in non-resonance excitation, because he certainly would have taken note of this frequency with his cyclically repetitive detector if near either the 6 Hz or 12 Hz measurement points and questioned the 7.5 Hz value.
8. Conclusions
Lynde P. Wheeler, past President of the IRE, commented in his appreciation of Nikola Tesla which appeared in the August 1943 issue of Electrical Engineering, page 355, that
"If there still remained some question as to the existence of some novel effect dependent on the very high voltages or frequencies or to their combination (a thesis maintained by Nikola Tesla himself throughout his life), the very general lack of existing equipment for dealing with the problems of insulation involved effectually discouraged any research in that direction."
A good point is made here. This writer is not aware of any duplication of the effects produced by Nikola Tesla 90 years ago, especially with regard to the high intensity ground currents, including effects associated with operation of the reconstruction of Nikola Tesla's Magnifying Transmitter by Robert Golka or Will Mische.
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