“optical thickness”的概念、定义、翻译、参考文献-科学参考

单词	optical thickness
释义	optical thickness [`äp·tǝ·kǝl `thik·nǝs] ^METEOROLOGY 1. In calculations of the transfer of radiant energy, the mass of a given absorbing or emitting material lying in a vertical column of unit cross-sectional area and extending between two specified levels. Also known as optical depth. 2. Subjectively, the degree to which a cloud prevents light from passing through it; depends upon the physical constitution (crystals, drops, droplets), the form, the concentration of particles, and the vertical extent of the cloud. ^OPTICS The thickness of an optical material times its index of refraction.
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