interplanetary dust

Japanese: interplanetary dust(英語表記)interplanetarydust
interplanetary dust

…This is because the angle between the ecliptic and the horizon is at its maximum during this season, and the zodiacal light becomes easier to see as it moves away from the Milky Way; the brightness of the zodiacal light itself does not change. Zodiacal light is a phenomenon in which tiny solid particles called interplanetary dust, which are distributed along the orbital plane of the planets in the solar system, scatter sunlight. The spectral distribution is almost the same as the solar spectrum, and shows a maximum of about 20% partial polarization. …

*Some terminology that refers to "interplanetary dust" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…これはこの季節に,黄道と地平線のなす角が最大になることと,黄道光が天の川から遠ざかるので見えやすくなるためであって,黄道光自身の明るさが変化するわけではない。黄道光は,太陽系の惑星軌道面に沿って分布している惑星間塵interplanetary dustと呼ばれる微小固体粒子が,太陽光を散乱している現象である。スペクトル分布は太陽スペクトルとほぼ同じで,最大20%程度の部分偏光を示している。…

※「interplanetary dust」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

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