Talk:Radio atmospheric signal

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Whistler as an Impulse response[edit]

This was really my personal idea, but people in my research group at Stanford agree with the concept. However, impulse response is generally a term that we apply to linear and time-invariant systems. The magnetosphere is certainly not time-invariant (though it can be quasi-static on short time scales) and it is sometimes (but not always) nonlinear. Also, a sferic is not a perfect impulse; it has most of its energy concentrated in the VLF range, and it's (obviously) a finite-duration signal. But it's still a pretty good approximation to an impulse for VLF measurement purposes.

Here's the point: should we cut out the bit about the whistler being the impulse response of the magnetosphere (with the sferic as the impulse), or should we elaborate on it?

Also, should we move/copy it to the whistler article?

Drdan14 05:21, 12 May 2007 (UTC)[reply]

Three illustrations nominated for deletion on Commons[edit]

Three figures in this article appear to be scans from journal articles, so the copyrights are not clear. I have nominated all three for deletion on Commons. Glrx (talk) 02:59, 18 June 2012 (UTC)[reply]

Two reappeared after being deleted on Commons. I've renominated them. Glrx (talk) 17:28, 2 October 2012 (UTC)[reply]

Insufficient scope[edit]

Sferics do arise from lightning discharge, but also from other sources of atmospheric phenomena which are not mentioned in the article. Movement and friction of large masses of air can also cause atmospheric electricity, also tornados. This should be mentioned in the article. See https://en.wikipedia.org/wiki/Foehn_wind Ontologix (talk) 22:00, 15 August 2019 (UTC)[reply]

Effect of sferics on humans pseudoscience?[edit]

One of the supporting citations for this section is "The Invisible Rainbow" Arthur Firstenberg. Arthur Firstenberg seems to be an advocate of the fringe beliefs centering around the electromagnetic spectrum. I do not have access to this book but reviews on amazon and search results on google seem to suggest that the book is reflective of his opinions. I have not marked the whole section as questionable as the other source is in german and I am unable to verify it as I can not read the german language. 96.84.73.145 (talk) 02:44, 28 February 2020 (UTC)[reply]