In optics, researchers typically use the divergence angle formula to describe the spread of a beam of light as it travels through a medium. This formula often represents as θ = λ / π * D, where θ denotes the divergence angle, λ represents the wavelength of light, and D indicates the diameter of the beam.
Where:
- is the divergence angle,
- is the wavelength of light,
- is the diameter of the beam.