nemfrog:“Dependence of echo elongation on aspect angle.” The physics of sound in the sea. 1946. Colo
nemfrog:“Dependence of echo elongation on aspect angle.” The physics of sound in the sea. 1946. Color inverted.Internet Archive -- source link
nemfrog:“Dependence of echo elongation on aspect angle.” The physics of sound in the sea. 1946. Color inverted.Internet Archive -- source link