Editing Openai/6897769e-4ee4-800f-aba5-69cca34f701c (section)

=== 1. Dₘᵢₙ is sensitive to very small changes in refractive index n(λ). With precise n(λ) (Hale & Querry / refractiveindex.info) your Dₘᵢₙ will shift by fractions of a degree. ===
# Spectral weighting (Planck continuum, line emission) and the scattering intensity (Airy/Mie ripple for finite drop size) determine what angle is actually bright and dominant; those effects must be included to claim a tiny ~0.47° connection.
# The rainbow “ray” ~138° is a first-order geometric value (ray optics). Wave effects and droplet-size distributions produce small shifts (tenths of degrees or less) — exactly the scale of the 0.47° difference you’re chasing, so those effects matter.