Register to reply

Polarization physics problem

by sachi
Tags: polarisation
Share this thread:
Apr3-06, 08:53 AM
P: 76
"by what factor may the glare off water be reduced when the sun is at

a) 45 degrees above the horizon
b)60 degrees above the horizon

n.b refractive index of water is 1.33"

I have derived the fresnel reflection coefficients for the cases when E is perpendicular to the plane of incidence, and when E is parallel to the plane of incidence. I am also assuming that "glare" is caused by the E-field. But I'm not sure which reflection coeffient to use i.e do we assume that E is parallel to plane of incidence of perp.?

Phys.Org News Partner Science news on
Wildfires and other burns play bigger role in climate change, professor finds
SR Labs research to expose BadUSB next week in Vegas
New study advances 'DNA revolution,' tells butterflies' evolutionary history
Meir Achuz
Apr3-06, 10:01 AM
Sci Advisor
HW Helper
PF Gold
P: 1,991
The E field from the blue sky is predominantly horizontally polarized.
This is because the Rayleigh scattering polarizes the scattered radiation.
The horizontal polarization comes out to be
You will have to use both E polarizations at the water surface.
The above factor gives the polarized horizontal E^2. Then you have to include both E polarizations with E^2 = one half of the unpolarized component.

Register to reply

Related Discussions
Sigma polarisation General Physics 4
Polarisation Introductory Physics Homework 3
Polarisation of light Introductory Physics Homework 2
Polarisation of light... General Physics 3
Polarisation of light! help please! General Physics 2