Main Question or Discussion Point
Hi all, can anyone help me understand in which direction skylight would be polarized at sunset, if the sunset was the in the West? I understand Rayleigh scattering, I'm just not sure about this concept.
With training, humans may be able to detect the polarization of skylight with the unaided eye under some conditions (this is a named effect, but unfortunately I can't recall the name). In general engineering terms, however, the human eye is not well designed, so there is considerable interest in producing robotic vision system which can detect and process polarization in addition to sensory modalities such as saturation and hue. The hope is that this will help autonomous "robowarriors" to distinguish between things they should should at and things they should not.I'm not sure of the mechanism, but if your sunglasses are polarised, you need only tilt your head to observe that the light from the sky is also largely polarised.