I am.
Not at all. There is no physical adjustment mechanism to do this on a guitar. One simply sets the bridge so that the harmonic at the 12 fret matches the note at the 12th fret. If you don't do this, it sounds out of tune. Why don't you try this sometime, as it doesn't appear that you have.
The frets certainly can't be moved. Their distances are based on 2^1/12.
Today, I would say the majority of guitar players use an electronic tuner.
You obviously don't play guitar.
Ahmmmm...interesting word "embouchure". Why did you use this term? Why not just say "mouth piece"?
Its certainly true that wind instrumentalists may well use techniques as a method to correct overtone frequencies, so as to make them more closer to harmonics. It is certainly correct that the overtone frequencies of such instruments get progressively more in error at the higher overtone numbers.
Oh dear...
Matching the fundamental is way more important then matching harmonics.
Your certainly entitled to your meanderings.
They most certainly do not, well, not in this universe anyway. Overtones may well beat, as these are not harmonically related.
If the notes are at exact harmonics, then there is no beating. The case for the octave situation is trivially obvious. All harmonic locks on to the basic fundamental such that the wave form is a continuous repeat at the fundamental period. If the basic frequencies are not harmonically related there will be beating, that is, there is a repeating pattern over many cycles of the fundamental.
You actually sound like a troll, as you are so er...fundamentally incorrect in what you say. Maybe you are confusing overtones with harmonics?
Kevin Aylward snipped-for-privacy@anasoft.co.uk