Open Organ Pipes
A cylindrical acoustic pipe open at both ends, containing displacement antinodes at both openings.
Governing formula
f_n = n v / (2 L) (n = 1, 2, 3, ...)
SI unit
Hz
In depth
Open organ pipes produce all integer harmonics (both even and odd), creating a rich musical tone quality.
Examples in the real world
Flutes and open organ pipes vibrating at all integer harmonic multiples.