diff --git a/mas/shrodequ_superpos/main.py b/mas/shrodequ_superpos/main.py
index fac4444..d7d0de4 100755
--- a/mas/shrodequ_superpos/main.py
+++ b/mas/shrodequ_superpos/main.py
@@ -2,22 +2,26 @@
 import matplotlib.pyplot as plt
 import numpy as np
 from phys import *
+from scipy.constants import electron_mass
 
-quantum_system = box(0.001) # box with inf walls
+system = infbox(0.001) # box with inf walls
 
-# x = np.arange(0, BOX_LENGTH, 0.00001)
-# n = np.arange(1, 10, 1)
-# 
-# X, N = np.meshgrid(x, n)
-# P = prob(X, N)
-# 
-# fig = plt.figure()
-# ax = plt.axes(projection='3d')
-# ax.plot_surface(X, N, P, rstride=1, cstride=1, cmap='viridis', edgecolor='none')
-# ax.set_xlabel('x [m]')
-# ax.set_ylabel('n [int]')
-# ax.set_zlabel('probability [frac]');
+p1 = particle(electron_mass, system, 1)
+p2 = particle(electron_mass, system, 2)
+
+x = np.arange(0, BOX_LENGTH, 0.00001)
+t = np.arange(0, 1, 0.01)
 # 
-# plt.show()
+X, T = np.meshgrid(x, t)
+P = system.get_superpos(X, T)
+
+fig = plt.figure()
+ax = plt.axes(projection='3d')
+ax.plot_surface(X, N, P, rstride=1, cstride=1, cmap='viridis', edgecolor='none')
+ax.set_xlabel('x [m]')
+ax.set_ylabel('time [s]')
+ax.set_zlabel('probability [frac]');
+
+plt.show()
 
 
diff --git a/mas/shrodequ_superpos/phys/__pycache__/particle.cpython-310.pyc b/mas/shrodequ_superpos/phys/__pycache__/particle.cpython-310.pyc
index 6e78f4b..9b1bd87 100644
Binary files a/mas/shrodequ_superpos/phys/__pycache__/particle.cpython-310.pyc and b/mas/shrodequ_superpos/phys/__pycache__/particle.cpython-310.pyc differ
diff --git a/mas/shrodequ_superpos/phys/__pycache__/quantum_systems.cpython-310.pyc b/mas/shrodequ_superpos/phys/__pycache__/quantum_systems.cpython-310.pyc
index 97b024b..bf5c30a 100644
Binary files a/mas/shrodequ_superpos/phys/__pycache__/quantum_systems.cpython-310.pyc and b/mas/shrodequ_superpos/phys/__pycache__/quantum_systems.cpython-310.pyc differ
diff --git a/mas/shrodequ_superpos/phys/quantum_systems.py b/mas/shrodequ_superpos/phys/quantum_systems.py
index bf31a46..4feeaa9 100644
--- a/mas/shrodequ_superpos/phys/quantum_systems.py
+++ b/mas/shrodequ_superpos/phys/quantum_systems.py
@@ -1,4 +1,4 @@
-from phys.particle import particle
+#from phys.particle import particle
 import numpy as np
 
 class quantum_system:
@@ -6,16 +6,26 @@ class quantum_system:
         self.name = name
         self.particles = []
 
-    def add_particle(particle: particle):
+    def add_particle(self, particle):
         self.particles.append(particle)
-        print(f"Added particle {particle} to quantum system '{self.name}'")
+        print(f"Added particle {particle} to quantum system '{self.name}' ({self})")
 
 class infbox(quantum_system):
     def __init__(self, length: float):
-        super
-        self.name = "Inf Box"
+        super().__init__("Inf Box")
         self.length = length
         self.norm_factor = np.sqrt(2/self.length)
 
+    def get_superpos(self, x: float, t: float) -> float:
+        waves = []
+        for part in self.particles:
+            waves.append( part.wave(x, t) )
+
+        superpos_wave = sum(waves)
+
+        # normalize the superpos #TODO: ?????
+        # superpos_wave *= 1/abs(superpos_wave) 
+
+        return abs(superpos_wave) ** 2