diff --git a/physics/bragg_angle.py b/physics/bragg_angle.py
index 928e3256b..3dbdeb224 100644
--- a/physics/bragg_angle.py
+++ b/physics/bragg_angle.py
@@ -1,24 +1,26 @@
 import math
+
+
 def bragg_angle(distance: float, order: int, wavelength: float) -> float:
     """
     Calculate the Bragg diffraction angle using the formula:
     sin(θ) = (n * λ) / (2 * d)
-    
+
     Parameters:
     distance d (float): Distance between crystal planes (in meters).
     order n (int): Order of reflection.
     wavelength λ (float): Wavelength of the radiation (in meters).
- 
+
     Examples:
     >>> bragg_angle(2.2e-10, 1, 2.2e-10)
     30.0
-    
+
     >>> bragg_angle(5e-10, 2, 1e-10)
     11.5
-    
+
     >>> bragg_angle(4e-10, 1, 4e-10)
     30.0
-    
+
     # Test case for an invalid sine value (out of range)
     >>> bragg_angle(1e-10, 2, 3e-10)
     Traceback (most recent call last):
@@ -32,6 +34,8 @@ def bragg_angle(distance: float, order: int, wavelength: float) -> float:
     theta_degrees = math.degrees(theta_radians)
     return round(theta_degrees, 1)
 
+
 if __name__ == "__main__":
     import doctest
+
     doctest.testmod(verbose=True)