I The reflection of the sunset on the water is redder--Why?

  • I
  • Thread starter Thread starter wilddouglascounty
  • Start date Start date
  • Tags Tags
    Reflection Water
AI Thread Summary
The redder appearance of sunset reflections on water is attributed to light absorption and polarization effects. When observing sunsets with polarizing sunglasses, the difference in color intensity can be noted, with horizontally polarized light appearing redder than vertically polarized light. This phenomenon occurs because light reflecting off surfaces tends to favor polarization parallel to the surface. The angle of reflection plays a significant role in how colors are perceived. Understanding these optical principles enhances the appreciation of sunset reflections.
wilddouglascounty
Messages
1
Reaction score
1
December 9, 2021 wetlands sunset.jpg

I presume that some kind of absorption occurs when the sunset is reflected on the water, but can anyone describe this in more detail?
 
Science news on Phys.org
Next time you see this, have a set of polarizing sun glasses on hand. I suspect you will discover that the horizontally polarized lunset is redder than the vertically polarized sunset. When light makes a shallow reflection of any surface, the reflection of light polarized parallel to the surface is favored.
 
Thread 'A quartet of epi-illumination methods'
Well, it took almost 20 years (!!!), but I finally obtained a set of epi-phase microscope objectives (Zeiss). The principles of epi-phase contrast is nearly identical to transillumination phase contrast, but the phase ring is a 1/8 wave retarder rather than a 1/4 wave retarder (because with epi-illumination, the light passes through the ring twice). This method was popular only for a very short period of time before epi-DIC (differential interference contrast) became widely available. So...
I am currently undertaking a research internship where I am modelling the heating of silicon wafers with a 515 nm femtosecond laser. In order to increase the absorption of the laser into the oxide layer on top of the wafer it was suggested we use gold nanoparticles. I was tasked with modelling the optical properties of a 5nm gold nanoparticle, in particular the absorption cross section, using COMSOL Multiphysics. My model seems to be getting correct values for the absorption coefficient and...
Back
Top