normal

i

b

STOF 1

STOF 2

u

Vis spejling stof 2

u

Vis spejling stof 1

A = (4, 7)
B = (18, 7)
f = Line(A, B)
C = (11, 12)
D = (11, 3)
g = Line(C, D)
i = 0.5759586531581288 rad (slider from 0° to 90°, step 0.1°)
E = (11, 11.18)
F = (11, 7)
E' = Rotate(E, i, F)
α = Angle(E, F, E')
h = Ray(F, E')
n_1 = 1 (slider from 1 to 5, step 0.01)
n_2 = 1.33 (slider from 1 to 5, step 0.01)
b: asin((sin(i) * n_1 / n_2))
G = (11, 5)
G' = Rotate(G, b, F)
β = Angle(G, F, G')
j = Ray(F, G')
H: (-40, 7)
I: (-40, -5)
J: (60, -5)
K: (60, 7)
q1, h_1, i_1, j_1, k = Polygon(H, I, J, K)
γ, δ, ε, ζ = InteriorAngles(q1)
L = (11, 3.48)
L' = Rotate(L, (-b), F)
η = Angle(L', F, L)
l = Ray(F, L')
a = false
M = (11, 9.3)
M' = Rotate(M, (-i), F)
θ = Angle(M', F, M)
m = Ray(F, M')
c = false