Ice crystals are not round and they create different patterns depending on the shape they take. Look up sun halos. There is even a specific one called a sun dog.
It would produce a completely different effect. Ice crystals, which tend to be hexagonal prisms, produce some atmospheric optical effects and they can be a variety of shapes.
This is interesting, but what I want to know is what shape they would be if water droplets were not round.
Like, if they were cuboid or pyramidal instead, would that change the shape of the rainbow?
Ice crystals are not round and they create different patterns depending on the shape they take. Look up sun halos. There is even a specific one called a sun dog.
It would produce a completely different effect. Ice crystals, which tend to be hexagonal prisms, produce some atmospheric optical effects and they can be a variety of shapes.