Have you noticed the Sun during Sunrise or Sunset?

It appears red

Sun appearing reddish during sunset - Teachoo.jpeg

But, in the afternoon, it appears white.

Sun appearing white in the afternoon - Teachoo.jpeg

Let's see why it happens


During Afternoon

Sun is directly above us

Light rays from Sun take lesser time to reach us

Hence there is less scattering of blue light

So Sun appears to be white


During Morning and Evening

Sun is at the horizon

Light rays from sun take more time to reach us

Hence, there is more scattering of blue color of sunlight which is of shorter wavelength

Hence we are able to see red colored sun because there is less scattering of red color


  1. Class 10
  2. Chapter 11 Class 10 - Human Eye and Colourful World (Term 1)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo