| 翻訳と辞書 |
| optical depth ： ウィキペディア英語版 |
optical depth
In physics, optical depth or optical thickness, is the ''natural logarithm'' of the ratio of incident to ''transmitted'' radiant power through a material, and spectral optical depth or spectral optical thickness or is the natural logarithm of the ratio of incident to ''transmitted'' spectral radiant power through a material. Optical depth is dimensionless, and in particular is not a length, though it is a monotonically increasing function of path length, and approaches zero as the path length approaches zero. The use of the term "optical density" for optical depth is discouraged.
In chemistry, a closely related quantity called "absorbance" or "decadic absorbance" is used instead of optical depth: the ''common logarithm'' of the ratio of incident to ''transmitted'' radiant power through a material, that is the optical depth divided by ln 10.
==Mathematical definitions==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「optical depth」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|