Supplement to the research on the propagation of sound
In this paper, Euler gets a result that is equivalent to the general formulae of inversion for partial differentiations. He also discovers the wave equation for aerial acoustics, noting in addition that cylindrical and spherical waves also follow it. (Based on Clifford Truesdell's introduction to Opera Omnia Series II, Volume 12.)
Original Source Citation
Mémoires de l'académie des sciences de Berlin, Volume 15, pp. 452-483.
Opera Omnia Citation
Series 3, Volume 1, pp.452-483.