Poynting, JH

Japanese: Poynting,J.H.(英語表記)PoyntingJH
Poynting, JH

...This phenomenon occurs when interplanetary matter, which revolves around the sun due to its gravitational force, draws a spiral orbit due to the influence of the sun's light pressure, gradually approaching the sun. This phenomenon was pointed out by British JH Poynting and HP Robertson. For objects with large masses such as planets, the effect of light pressure can be ignored, but for tiny particles such as interplanetary matter, the strength of light pressure, which is proportional to the cross-sectional area, cannot be ignored in comparison with the gravitational force, which is proportional to the mass. ...

*Some of the terminology that mentions "Poynting, JH" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…太陽の引力で公転している惑星間物質が,太陽の光圧の影響で,渦巻状の軌道を描いて,しだいに太陽に近づいていく現象をいう。イギリスのポインティングJ.H.PoyntingとロバートソンH.P.Robertsonによって指摘されたもの。惑星のように質量の大きいものは,光圧の影響が無視できるが,惑星間物質のような微小な粒子では,質量に比例する引力に対して,断面積に比例する光圧の強さが無視できない。…

※「Poynting,J.H.」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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