"Brian Reay" wrote in message
...

I went over this at the time, although in connection with another of his
wild claims (he claimed that you couldn't divide complex numbers).
Basically, the mathematical concept, which wasn't Evans' point, of
negative frequency arises from Euler's Identities for sin (theta) and cos
(theta) which leads to the result that a simple, real, sinusoid, is the
sum (using Euler's Identities) of positive and negative terms. In DSP
circles, the negative terms, are generally referred to the 'negative
frequency terms' (or some variation, depending on local usage). These are
generally removed, or filtered (numerically) to simplify the overall
processing task.
If you dig into the archive to the time when Evans first raised this, you
will see he was clearly not referring to 'negative frequency' in terms of
the above. I pointed out his error, although I did under estimate his
lack of understanding and/or ability to twist facts. This is one of the
topics he drags up after a drubbing and he promptly gets another one.

Well, brian, that's another attempt by you to save face by resorting to
rather silly and infantile abusive remarks.

When you grow up, you will realise that there are many different viewpoints
about the phenomena that you discuss that are not wrong just because you
disagree with them (or fail to understand them), and grownups can
disambiguate
the situation by mature and reasonable debate, and not by the nasty
sneering that you adopt for years on end.

How can you ever justify your claim to be assisting newcomers when you
always
sneer at attempts to resolove misunderstandings or promote technical
discussion?

You are your own worse enemy.