Encyclopaedia Britannica, 11th Edition, "Hydromechanics" to "Ichnography" / Volume 14, Slice 2

by Various

φ = ψ = nt, suppose,

(28)

Ω1ξ + Ω2η = Ωω,

(29)

dφ	= ζ −	a2 + c2		ω	ζ,
dt		a2 − c2		Ω

(30)

dψ	= −	2a2		Ω	ζ,
dt		a2 + c2		ω

(31)

1 −	a2 + c2		ω	= −	2a2		Ω	,
	a2 − c2		Ω		a2 + c2		ω

(32)