Electric Field - Point Charge

import matplotlib.pyplot as plt
import numpy as np

# Electric field from point charge at origin
n = 5
x = np.linspace(-2, 2, n)
y = np.linspace(-2, 2, n)
z = np.linspace(-2, 2, n)
X, Y, Z = np.meshgrid(x, y, z)

# Radial field (Coulomb's law)
r = np.sqrt(X**2 + Y**2 + Z**2) + 0.3
U = X / r**3
V = Y / r**3
W = Z / r**3

fig = plt.figure(figsize=(10, 8), facecolor='#0a0a0f')
ax = fig.add_subplot(111, projection='3d', facecolor='#0a0a0f')

ax.quiver(X, Y, Z, U, V, W, length=0.5, normalize=True,
          color='#fbbf24', alpha=0.85, arrow_length_ratio=0.3)

# Mark the charge at origin
ax.scatter([0], [0], [0], color='#ef4444', s=150, marker='o')

ax.set_xlim(-2.5, 2.5)
ax.set_ylim(-2.5, 2.5)
ax.set_zlim(-2.5, 2.5)

ax.set_xlabel('X', color='white', fontsize=10)
ax.set_ylabel('Y', color='white', fontsize=10)
ax.set_zlabel('Z', color='white', fontsize=10)
ax.set_title('Electric Field - Point Charge', color='white', fontsize=14, fontweight='bold', pad=20)

ax.tick_params(colors='#64748b', labelsize=8)
ax.xaxis.pane.fill = False
ax.yaxis.pane.fill = False
ax.zaxis.pane.fill = False
ax.xaxis.pane.set_edgecolor('#1e293b')
ax.yaxis.pane.set_edgecolor('#1e293b')
ax.zaxis.pane.set_edgecolor('#1e293b')

ax.view_init(elev=25, azim=45)
plt.tight_layout()
plt.show()