partially polarized light

…However, it is known that even with natural light, when it is reflected or refracted several times, the component of light that has a plane of vibration in a certain direction (i.e., linearly polarized light) increases little by little each time it is reflected or refracted. In this way, a state in which light with a plane of vibration in a certain direction is stronger than light with a plane of vibration in other directions is called partially polarized light. Analyzing this, we can say that partially polarized light is light in which a certain degree of linear polarization is mixed into natural light. …

*Some of the terminology that refers to "partially polarized light" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…しかし自然光であっても，何回か反射や屈折を受けると，受けるたびに少しずつある特定の方向に振動面をもつ光(すなわち直線偏光)の成分が増してくることが知られている。このように，ある特定方向の振動面をもった光がそれ以外の方向の振動面をもつ光より強くなった状態を部分偏光partially polarized lightと呼ぶ。このことを解析してみると，部分偏光とは自然光にある程度強い直線偏光が混じった光ということができる。…

※「partially polarized light」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報