diff --git a/reflection.py b/reflection.py
new file mode 100644
index 0000000000000000000000000000000000000000..bdb61f998c1218aff88110a3a10b5cc2990f44f3
--- /dev/null
+++ b/reflection.py
@@ -0,0 +1,26 @@
+# Show to python where to find the modules
+from scene import *
+from light import Spotlight
+from camera import Camera
+from raytracer import raytracer_render
+from matplotlib.image import imsave
+
+camera = Camera(600,600,1)
+materiau_sphere_bleue = Material(Vector((0,0,1)), .5, .3, .3, 100, .5)
+materiau_sphere_rouge = Material(Vector((1,0,0)), .5, .3, .3, 100, .3)
+materiau_sphere_blanche = Material(Vector((1,1,1)), .5, .3, .3, 100, .7)
+materiau_sphere_verte= Material(Vector((0,1,0)), .5, .3, .3, 100, .3)
+sphere_bleue = Sphere(Vector([0,0,3]), .8, materiau_sphere_bleue)
+sphere_rouge = Sphere(Vector([0.5,0.5,2]), .5, materiau_sphere_rouge)
+sphere_blanche = Sphere(Vector([0,0,0]), 50, materiau_sphere_blanche)
+sphere_verte = Sphere(Vector([2,-2,3]), .5, materiau_sphere_verte)
+lumiere = Spotlight(Vector((1,1,0)), Vector((1,1,1)))
+scene = Scene()
+scene.add_object(sphere_bleue)
+scene.add_object(sphere_rouge)
+scene.add_object(sphere_blanche)
+scene.add_object(sphere_verte)
+scene.add_light(lumiere)
+affiche = raytracer_render(camera, scene)
+imsave('two_spheres_reflection.png',affiche)
+print('Done')
diff --git a/scenes/reflection.py b/scenes/reflection.py
index cde3e1bdd15015c77dbfa529760682662ad46c6d..694f63659c36addf02c0e93597c6d83f6b6a1512 100644
--- a/scenes/reflection.py
+++ b/scenes/reflection.py
@@ -10,8 +10,8 @@ from matplotlib.image import imsave
 import sys
 
 camera = Camera(200,200,1)
-materiau_sphere_bleue = Material(Vector((0,0,1)), .7, .7, .7, 100, .7)
-materiau_sphere_rouge = Material(Vector((1,0,0)), .7, .7, .7, 100, .7)
+materiau_sphere_bleue = Material(Vector((0,0,1)), .5, .3, .3, 100, .5)
+materiau_sphere_rouge = Material(Vector((1,0,0)), .5, .3, .3, 100, .3)
 sphere_bleue = Sphere(Vector([0,0,3]), .8, materiau_sphere_bleue)
 sphere_rouge = Sphere(Vector([0.5,0.5,2]), .5, materiau_sphere_rouge)
 lumiere = Spotlight(Vector((1,1,0)), Vector((1,1,1)))
@@ -21,3 +21,4 @@ scene.add_object(sphere_rouge)
 scene.add_light(lumiere)
 affiche = raytracer_render(camera, scene)
 imsave('two_spheres_reflection.png',affiche)
+print('Done')
diff --git a/scenes/two_spheres_reflection.png b/scenes/two_spheres_reflection.png
index 3345277b857a806c034bb22e1094bef0573fbc05..196361e20de713ac5dc8d7c1f2cb55ff4706606a 100644
Binary files a/scenes/two_spheres_reflection.png and b/scenes/two_spheres_reflection.png differ
diff --git a/tests/02_rayon.py b/tests/02_rayon.py
index 1ce0c2f0970b1d1b089debc914b25d951318e8fa..d3389e7f53cdc89f67fffea9df4ae5dee2900879 100644
--- a/tests/02_rayon.py
+++ b/tests/02_rayon.py
@@ -25,7 +25,6 @@ r_one = c.ray_at(c.image_nrows, c.image_ncols);
 r_one_ref_dir = Vector([-1,-1,c.focal_length])
 r_one_ref_dir = r_one_ref_dir / r_one_ref_dir.norm()
 
-assert abs(r_one.direction*(r_one_ref_dir) -
-           r_one.direction.norm() < 0.01), "c.ray_at(c.nrows,c.ncols) should have the direction [-1,-1,c.focal_length.";
+assert abs(r_one.direction*(r_one_ref_dir) - r_one.direction.norm()) < 0.01, "c.ray_at(c.nrows,c.ncols) should have the direction [-1,-1,c.focal_length.";
 
 
diff --git a/two_spheres_reflection.png b/two_spheres_reflection.png
new file mode 100644
index 0000000000000000000000000000000000000000..89fa5b3d0f4ce9c9ebddff669a4909cf3cf51d8d
Binary files /dev/null and b/two_spheres_reflection.png differ