Somewhere etc
Bright sunshine in the morning and we took the dogs for a walk to Fraserburgh beach.
Thunder and heavy rain in the afternoon followed by this rather “ flattened” rainbow.
Here’s an explanation of why it seems to be brighter inside the rainbow.
“The sky inside a primary rainbow is brighter than the sky outside of the bow. This is because each raindrop is a sphere and it scatters light over an entire circular disc in the sky. The radius of the disc depends on the wavelength of light, with red light being scattered over a larger angle than blue light. Over most of the disc, scattered light at all wavelengths overlaps, resulting in white light which brightens the sky. At the edge, the wavelength dependence of the scattering gives rise to the rainbow.”
So, there you go!
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