Question

what conditions must be met to be able to witness the magical formation of rainbow in sky ?

Answer 1

Answer:

The formation of a rainbow involves a series of physical phenomena- reflaction, refraction, dispersion and total internal reflection.

Conditions necessary to observe a rainbow:

1. The sun should be behind us.

2. It should have rained and the sun should be present.

Answer 2

• The sun needs to be behind the viewer

• The sun needs to be low in the sky, at an angle of less than 42° above the horizon. The lower the sun in the sky the more of an arc of a rainbow the viewer will see

• Rain, fog or some other source of water droplets must be in front of the viewer

• To observe the arc of a natural rainbow we must look at raindrops at an angle of 138° from the sun's direction, or 42° from the antisolar point