raggi solari

20-21 dicembre:
- solstizio d'inverno per l'emisfero Boreale
- solstizio d'estate per l'emisfero Australe

66.5°

42°

47°

23.5°

A = (-7.923, -6.885)
B = (7.967, -6.885)
C = (9.566684333154738, 4.238255660841938)
D = (15.566684333154738, 4.238255660841938)
a = Line(C, D)
E = (13.12, 2.03)
F = (0, 0)
G = (3.242, 4.868)
c = Circle(F, G)
H = (11.36, -2.436)
I = (10.964, -4.416)
J, K = Intersect(c, a)
L = Point(a)
N = (0, -6)
O = Point(c)
P = Point(c)
Q = Point(xAxis)
R = Point(xAxis)
U = (-12.126903988139855, 0.6832258145808832)
V = (-16.198225132338266, 0.6563513246542811)
e = Segment(U, V)
W = (16.69446474855578, 0.9850301804558704)
Z = (8.486716125312327, 5.330044205266196)
B_1 = Point(c)
D_1 = (5.395055430406206, -2.409642468732226)
E_1 = (3.987330479660203, -4.459124382318322)
F_1 = (0, -6)
O_1 = (-0.07051074062723085, -25.377150059060497)
P_1 = (-7.395824627483262, -17.963223504218305)
Q_1 = (-0.011435628636456413, -10.696984729353053)
S_1 = (0.011510902467395785, -12.452150246764894)
T_1 = (4.234649073708707, -14.356224104318782)
C_1 = Point(e)
G_1 = (-12.916206427929223, 1.1666467702635768)
g = Segment(C_1, G_1)
M = (11.351457975792389, 5.76218454771253)
b = Line(M, a)
S = (11.08271307652637, 2.2685008572542613)
d = Line(S, a)
f = Line(S, d)
T = (10, 0)
h = Line(T, f)
A_1 = (11.190211036232778, -3.9932552956440195)
i = Line(A_1, h)
H_1 = (12.238316143370255, -5.498226731533735)
j = Line(H_1, i)
I_1 = (10, -6)
k = Line(I_1, j)
J_1 = Point(k)
K_1 = Point(h)
L_1 = Point(b)
p = CircumcircleSector(J_1, K_1, L_1)
M_1 = Intersect(p, b, 1)
N_1 = Point(a)
R_1 = Point(f)
q = CircumcircleArc(M_1, N_1, R_1)
l = Tangent(N_1, q)
m = Tangent(R_1, q)
U_1 = Point(m)
V_1 = Point(f)
α = Angle(V_1, R_1, U_1)
W_1 = Point(l)
Z_1 = Point(a)
β = Angle(Z_1, N_1, W_1)
A_2 = Point(h)
n = OrthogonalLine(A_2, h)
B_2 = Intersect(h, l)
C_2 = Point(n)
γ = Angle(B_2, A_2, C_2)
D_2 = Point(i)
E_2 = Point(j)
F_2 = Point(k)
r = CircumcircleArc(D_2, E_2, F_2)
s = Tangent(D_2, r)
t = Tangent(E_2, r)
G_2 = Point(s)
H_2 = Point(i)
I_2 = Point(t)
J_2 = Point(j)
δ = Angle(G_2, D_2, H_2)
ε = Angle(I_2, E_2, J_2)