Physik Schwingungen Wellen?

You can’t do that either if you yourself are not a researcher and an experimental physicist.
So research (you said earlier) or googles:

(b)
“Orgelpfeife vibrational knot”
leads to a document
“Klang Spektrum von Pfeifen”

(d)
“The reason for overblowing” leads to
https://de.wikipedia.org/wiki/Naturtonserie
And there you will find the natural-septime, the interval that can also be generated when blowing a bottle (actually very strongly!)
https://de.wikipedia.org/wiki/Naturseptime