PhysLink.com Logo

Question

Why we can see the sunlight for over 20 minutes even after sunset?
Asked by: Joy Wing-kai Lam

Answer

For the same reason that when the sun is overhead, you can see the sky: refraction. When passing through mixtures, light is scattered in various directions. After the light from the sun no longer directly meets your eyes, it is still passing through miles of atmosphere over your head, and being scattered all around. It is indirect lighting.
Answered by: Steve Story





Support US

Our server costs have gone up and our advertising revenue has gone down. You do the math! If you find our site useful, consider donating to keep us going. Thanks!


Science Quote

'There is no inductive method which could lead to the fundamental concepts of physics. Failure to understand this fact constituted the basic philosophical error of so many investigators of the nineteenth century.'

Albert Einstein
(1879-1955)





All rights reserved. © Copyright '1995-'2018 PhysLink.com   Privacy Statement | Cookie Policy