Schumann Resonance Using Elfrad Circuit.
To explain what you are seeing I have marked the 1st., 2nd. and 3rd. Schumann Resonance as seen with the data acquisition software set for a frequency resolution of 0 Hz. to 25 Hz. Periodically the 3rd. resonance can be seen. The reason you see repeated groups of Schumann is due to the software set for oscilloscope mode. The particular software is not capable of a single group capture. Future data acquisition will be done with a higher quality module and software. This method though will give you a good idea as to how Schumann varies. The spectras you will see after are of Schumann as it is subjected to a Magnetic Storm. Please make note you do not see any effects of 60 Hz. or the harmonics thereof. This provides evidence of the superior filtering properties of the Elfrad circuit for use in a city environment.
As the storm progresses note how Schumann changes. Also please note the up and down wave motion the storm creates.
Schumann continues to change with magnetic storm intensity.
Wave motion becomes more pronounced.
Further changes.
Schumann begins to return to normal.
Stabilized until the next Magnetic effect from the storm begins.
