On 7 Apr 2007 08:55:58 -0700, "Keith Dysart" wrote:

If the waves are mutually incoherent, there is
NO interference which means no effect on each other.
Constructive and destructive interference is
impossible between two mutually incoherent waves
(under ordinary experimental conditions).

By "NO interference" did you mean "sufficiently close to zero
that it can be ignored for engineering purposes", or "exactly
zero"?

Hi Keith,

Your question of parsing "NO" reveals one of those binary shifts in an
otherwise analog word that has me puzzled too. There is also the
amusing "mutually incoherent" redundancy. Aside from these sophisms,
there is a conceptual, quixotic tilting at windmills in the phrase:
no effect on each other
as if waves ever affected each other (irrespective of coherence -
mutuality notwithstanding).

If the past is an indicator of future activity, this topic is about to
split into other discussion with a desperate attempt to appear to be
answering for these strange theses.

73's
Richard Clark, KB7QHC