7.8 Hertz Resonant Circuit

[tim123]

Hi Folks,
  I've recently been looking at Schumann Resonance stuff in my research...

I've a simple-ish question for the forum:

- Schumann Resonance is reportedly 7.83Hz
- Circumference of Earth is 40008 Km (minimum)
- Formula for calculating one from the other is: F = C / L, where C is speed of light. (http://www.1728.org/freqwave.htm)
- Speed of light is 299792458 m/s

Question: Do the calcs, and it doesn't add up!

- If F = 7.83 Hz, then L = 38,287,670 m.
- If L = 42,008,000 m, then F = 7.14Hz

What's going on? Anyone have any idea?

Thanks
Tim

PS. It's a big, big difference! between 7.14Hz and 7.83...

[wings]

This article deals primarily with spherical and ellipsoidal models of the Earth
http://en.wikipedia.org/wiki/Earth_radius

[tim123]

Here's a table showing the Earth resonance harmonics - and the differences between the two...

[tim123]

This article deals primarily with spherical and ellipsoidal models of the Earth
http://en.wikipedia.org/wiki/Earth_radius

Hi Wings
  Mmm, I know the earth's not spherical... The thing is - how can the observed wavelength be * less than * the minimum circumference...?

I could understand if it was a wavelength a bit bigger than the circumference, but less? Does it go inside the Earth? No... So how does that work?

Regards, Tim

[Groundloop]

Hi Wings
  Mmm, I know the earth's not spherical... The thing is - how can the observed wavelength be * less than * the minimum circumference...?

I could understand if it was a wavelength a bit bigger than the circumference, but less? Does it go inside the Earth? No... So how does that work?

Regards, Tim

Hi Tim,

See: https://en.wikipedia.org/wiki/Schumann_resonances

GL.