What is a Rainbow? - Light Refraction

The video explains how rainbows form, requiring sunlight at a low angle and water droplets. Light slows and bends when entering water, a process called refraction. Inside the droplet, light reflects and refracts again, splitting into colors due to different wavelengths. This creates a spectrum visible as a rainbow arc. The angle of refraction makes rainbows appear distant and unreachable.

Why do we see rainbows as an arc?

What does the statement 'you can never get closer to a rainbow' mean?