Diffuse sky radiation is solar radiation reaching the Earth 's surface after having been scattered from the direct solar beam by molecules or particulates in the atmosphere. It is also called sky radiation, the determinative process for changing the colors of the sky.

Light from the sky is polarized horizontally along the horizon. During twilight at either the vernal or autumnal equinox, the band of maximal polarization is defined by the north-zenith-south plane, or meridian. In particular, the polarization is vertical at the horizon in the north and south, where the meridian meets the horizon.

Rayleigh scattering refers to the scattering of light off of the molecules of the air, and can be extended to scattering from particles up to about a tenth of the wavelength of the light. It is Rayleigh scattering off the molecules of the air which gives us the blue sky.

2024年12月14日 · When sunlight or moonlight passes through a thin cloud of water droplets, diffraction and interference can produce a disk of bright sky centered on the luminary (light source), surrounded by one or more colored rings or fringes (Fig. 22.48).

Skylight Polarization. The sky is blue because of the light scattered from the sky by Rayleigh scattering. That Rayleigh scattering partially polarizes the light. Because of this, you can use a polarizer on your camera to get more dramatic sky colors.

2020年11月6日 · Skylight is characterised by sunlight scattered by the atmosphere and clouds, resulting in soft, diffuse light. In a cloudy climate, the diffuse sky is often the main source of useful daylight. If a single wavelength is present, we say that we have monochromatic light.

Diffraction of light is defined as the bending of light around corners such that it spreads out and illuminates areas where a shadow is expected. In general, it is hard to separate diffraction from interference since both occur simultaneously. The silver lining which we witness in the sky is caused due to diffraction of light.

'Sky radiation' refers to the spectral distribution of radiation in the atmosphere, influenced by Rayleigh scattering which causes blue light to scatter more prominently than red light, giving the sky its blue appearance. You might find these chapters and articles relevant to this topic.

Light waves show the same phenomenon, called light diffraction, when they bend around an obstacle larger than their wavelength. Meanwhile, when these waves of light collide with particles and molecules smaller than their wavelengths in the atmosphere, they cause the particles and molecules to "relay" their wave motion, radiating light in the ...

2017年1月20日 · In this paper, the real-time measurement of the sky light polarization pattern across the sky has been achieved with a wide field of view camera. The images were processed under a new reference...