d4t_formulas/assets/formulas/optics.d4rt

[
  // Snell's Law
  {
    "name": "Snell's Law",
    "description": r"""
Law describing refraction of light at interface between media.

$$n_1\sin(\theta_1) = n_2\sin(\theta_2)$$

Where:
- $n_1, n_2$: Refractive indices of the two media
- $\theta_1$: Angle of incidence
- $\theta_2$: Angle of refraction

This law explains how light bends when passing between materials.""",
    "input": [
      {"name": "n1", "unit": "scalar"},
      {"name": "n2", "unit": "scalar"},
      {"name": "theta1", "unit": "degree"}
    ],
    "output": {"name": "theta2", "unit": "degree"},
    "d4rtCode": """
       var theta1Rad = theta1 * (pi / 180);
       var sinTheta2 = (n1 * sin(theta1Rad)) / n2;
       theta2 = asin(sinTheta2) * (180 / pi);
    """,
    "tags": ["physics", "optics", "light"]
  }
]