What is the purpose of a rainbow?

Related questions

1. What is the straight ally flag?
2. Who was Noah in the Bible?
3. Why is the LGBT flag rainbow?
4. What are the different LGBT flags?
5. Who is Cain in the Bible?
6. How did the rainbow flag become an LGBT symbol?
7. What do clouds mean in the Bible?
8. What does the Q stand for in Lgbtq?
9. What do the colors on the LGBT flags mean?
10. What does each color of the rainbow flag mean?

Tags

1. #rainbows
2. #resulting
3. #sunlight
4. #dispersion
5. #droplets
6. #caused
7. #section
8. #water
9. #appearing
10. #light
11. #opposite
12. #directly
13. #rainbow
14. #meteorological
15. #multicoloured
16. #circular
17. #always
18. #takes
19. #spectrum
20. #refraction
21. #appear
22. #reflection
23. #phenomenon