If you are interested in the topic of the firmament and/or rainbows (or other related topics) please join us to explore and exchange our views further on flatearthresearch.
It is possible that a curved (and reflective) firmament could be involved in the curved rainbow, but it is by no means necessary/certain.
The rainbow is actually circular, and the bottom typically gets clipped off by the ground due to the angle of the light.
The rainbow is circular because the refractor/prism (water droplets) has a circular (-ish) cross section.
There are a few threads about the topic (both rainbows and the firmament) over on flatearthresearch you may want to check out and/or contribute your thoughts/questions to!
If you are interested in the topic of the firmament and/or rainbows (or other related topics) please join us to explore and exchange our views further on flatearthresearch.
It is possible that a curved (and reflective) firmament could be involved in the curved rainbow, but it is by no means necessary/certain.
The rainbow is actually circular, and the bottom typically gets clipped off by the ground due to the angle of the light.
The rainbow is circular because the refractor/prism (water droplets) has a circular (-ish) cross section.
There are a few threads about the topic (both rainbows and the firmament) over on flatearthresearch you may want to check out and/or contribute your thoughts/questions to!