Volvelle Denoville âge de la Lune
Author: phm - Observatoire Lyon - France

texte1

Animation volvelle
Age de la Lune
J.B. Denoville
ASSP Rouen

g = 10
α = 0.7504915783575616 rad (slider from 0 to 6.283185307179586, step 0.008726646259971648)
ha: 2289.0 / g / 2.0
X2: (ha, -(ha))
X1: (-(ha), -(ha))
hb: 2370.0 / g / 2.0
lb: 2019.0 / g / 2.0
X3: (-(lb), -(hb))
la: 2289.0 / g / 2.0
X4: (lb, -(hb))
P3: (sqrt(x(X3)^(2.0) + y(X3)^(2.0)); 180.0° + atan(hb / lb) + α)
P4: (sqrt(x(X3)^(2.0) + y(X3)^(2.0)); -atan(hb / lb) + α)