diff --git a/particles.py b/particles.py
index d92096c..c56ce87 100644
--- a/particles.py
+++ b/particles.py
@@ -28,13 +28,13 @@ dt = 0.1
 c[-1] = dt
 
 # Initial positions.
-x_coords = np.random.uniform(borders_x[0] / spawn_restriction, borders_x[1] / spawn_restriction, n_particles).astype(np.float16)
-y_coords = np.random.uniform(borders_y[0] / spawn_restriction, borders_y[1] / spawn_restriction, n_particles).astype(np.float16)
+x_coords = np.random.uniform(borders_x[0] / spawn_restriction, borders_x[1] / spawn_restriction, n_particles).astype(np.float32)
+y_coords = np.random.uniform(borders_y[0] / spawn_restriction, borders_y[1] / spawn_restriction, n_particles).astype(np.float32)
 
 
 # Initial momenta are 0.
-x_momenta = np.zeros(n_particles, dtype=np.float16)
-y_momenta = np.zeros(n_particles, dtype=np.float16)
+x_momenta = np.zeros(n_particles, dtype=np.float32)
+y_momenta = np.zeros(n_particles, dtype=np.float32)
 
 
 
@@ -57,9 +57,9 @@ brown = BrownIterator(-1, c # Max iterations, simulation parameters.
 			, x_coords, y_coords
 			, y_momenta, y_momenta
 			# The boundary condition: reflect at the borders,
-			, borders_x, borders_y
+			#, borders_x, borders_y
 			# or just let propagate to infinity.
-			#, [], []
+			, [], []
 			# Let the border dampen the system, border_dampening < 1 => energy is absorbed.
 			, border_dampening=1
 			, dt=dt)