In L'Atmosphere, Flammarion describes several other extremely unusual types of rainbows. He tells of Edmund Halley's observation of "three arches, one of which … reflected upon a river.

The different colours of light that we get from the sun What happens when light hits a raindrop Why rainbows are arch-shaped How you can create your own rainbow This resource is suitable for ...

Hawaii’s sunshine, short rain showers and clean air together create some of the planet's best conditions for viewing rainbows ...