The discussion centers on the secondary refraction of light in rainbows, specifically addressing the angles at which red and violet light refract. It clarifies that in a secondary rainbow, the angles differ from the primary rainbow, with red light refracting at approximately 50 degrees and violet at about 40 degrees. Participants emphasize the importance of distinguishing between primary and secondary rainbows when discussing refraction angles. A hyperlink is provided for further details on the specific angles involved. Understanding these nuances is crucial for accurately interpreting the phenomenon of double refraction in secondary rainbows.
