Topic
Atmospheric diffraction
About: Atmospheric diffraction is a research topic. Over the lifetime, 4 publications have been published within this topic receiving 17 citations.
Papers
TL;DR: This paper uses Mie theory simulations to demonstrate that the inner 3 red rings of the corona have angular radii of θ≈16/r, 31/R, and 47/ r, when θ is measured in degrees and r is measuring in μm.
Abstract: The atmospheric corona is a well-known diffraction phenomenon, typically seen as colored rings surrounding the Sun or Moon. In many respects, Fraunhofer diffraction provides a good explanation of the corona. As the angular sizes of the corona's rings are inversely proportional to the radius, r, of the spherical particles causing the corona, it should be easy to estimate the particle size from observations and photographs. Noting that some of the techniques commonly used for particle sizing based on diffraction theory can give misleading results for coronas caused by the scattering of sunlight, this paper uses Mie theory simulations to demonstrate that the inner 3 red rings of the corona have angular radii of θ≈16/r, 31/r, and 47/r, when θ is measured in degrees and r is measured in μm.
7 citations
TL;DR: In this article, the authors describe diffraction phenomena in transmission gratings made as strips of alternating color and suggest that atmospheric seeing should be influenced by selective diffraction in telluric lines.
Abstract: The writer describes diffraction phenomena in transmission gratings made as strips of alternating color. He discusses diffraction in slits formed in semitransparent material including liquid or gaseous layers and particularly when line- and band-absorption is present. He suggests that atmospheric seeing should be influenced by selective diffraction in telluric lines. He also discusses possible seeing effects in the solar atmosphere and prominences and hints at the possibility that irregular or semiregular selective diffraction may appear in the deep layers of sunspots possibly contributing to the scattering of light.
1 citations
TL;DR: In this paper, light curves are calculated for stellar occultations by a planetary body with an isothermal atmosphere from diffraction theory, and the character of the resulting curves is determined by the scale height H, the Fresnel zone size l, the surface atmospheric refractivity and the planetary radius.
Abstract: From diffraction theory, light curves are calculated for stellar occultations by a planetary body with an isothermal atmosphere. The character of the resulting curves is determined by the scale height H, the Fresnel zone size l, the surface atmospheric refractivity, and the planetary radius. An exact general solution and two approximations are presented which are valid when H is much greater than l. The importance is assessed of accounting for diffraction effects of the limb when deducing atmospheric parameters from occultation light curves
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2015 | 1 |
| 1979 | 1 |
| 1976 | 1 |
| 1974 | 1 |