Observations on skylight polarization in Nebraska
نویسندگان
چکیده
منابع مشابه
An Analytical Model for Skylight Polarization
Under certain circumstances the polarisation state of the illumination can have a significant influence on the appearance of scenes; outdoor scenes with specular surfaces – such as water bodies or windows – under clear, blue skies are good examples of such environments. In cases like that it can be essential to use a polarising renderer if a true prediction of nature is intended, but so far no ...
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Skylight polarization provides a significant navigation cue for certain polarization-sensitive animals. However, the precision of the angle of polarization (AOP) of skylight for vehicle orientation is not clear. An evaluation of AOP must be performed before it is utilized. This paper reports an evaluation of AOP of skylight by measuring the skylight polarization patterns of clear and cloudy ski...
متن کاملThe polarization of skylight: An example from nature
A simple analytical model is presented for calculating the major features of the polarization of skylight over a hemisphere centered on an earthbound observer. The model brings together material from different topics in optics: polarization of plane waves, natural unpolarized light, and dipole scattering. Results calculated with the simple model are compared with experimental data. A brief desc...
متن کاملStudy on measuring system for characteristics and distribution of skylight polarization
A new system has been developed and calibrated to measure the charactristics and distribution of skylight polarization. With a series of measurements obtained, we verified that the distribution of degree and angle of skylight polarization accords well with the predictions of Rayleigh scattering. The differences of the characteristics and distribution of skylight polarization across the principa...
متن کاملNeutral points of skylight polarization observed during the total eclipse on 11 August 1999.
We report here on the observation of unpolarized (neutral) points in the sky during the total solar eclipse on 11 August 1999. Near the zenith a neutral point was observed at 450 nm at two different points of time during totality. Around this celestial point the distribution of the angle of polarization was heterogeneous: The electric field vectors on the one side were approximately perpendicul...
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ژورنال
عنوان ژورنال: American Journal of Science
سال: 1868
ISSN: 0002-9599
DOI: 10.2475/ajs.s2-45.133.96-a