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

Why does Sun appear red during Sunrise or Sunset - Teachoo.jpg

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

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.