When light that is spatially partially coherent, such as sunlight, is incident on a sphere, the scattered field exhibits surprising coherence properties. The observed oscillatory behavior with deep minima means that the field in certain pairs of directions is highly correlated, whereas in others, it is essentially uncorrelated, and can even have correlation singularities. Because any subsequent scattering event is strongly affected by the state of coherence, these results are particularly important for multiple scattering in discrete disordered media.

中文翻译：

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球体散射时的相干修改和相位奇异性：Mie公式。

当空间上部分相干的光（例如太阳光）入射到球体上时，散射场显示出令人惊讶的相干特性。观察到的具有极小深度的振荡行为意味着在某些方向对上的磁场高度相关，而在其他方向上，则本质上是不相关的，甚至可能具有相关的奇点。因为任何后续散射事件都受到相干状态的强烈影响，所以这些结果对于离散无序介质中的多次散射特别重要。