Evershed, J.

Japanese: エバーシェッド,J. - えばーしぇっど
Evershed, J.

...From this perspective, it can be said that the cycle of solar activity is approximately 22 years.
[Evershed Flow]
It is a stream that flows outward from the penumbra of a sunspot and was discovered by John Evershed (1864-1956) in 1909. It reaches a maximum speed of about 2 km/s in the middle of the penumbra or near the photosphere.

*Some of the terminology that mentions "Evershed, J." is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この見地からすると太陽活動の周期は約22年であるということができる。
[エバーシェッドの流れ]
 黒点の半暗部を外向きに流れ出る流れで,1909年エバーシェッドJohn Evershed(1864‐1956)が発見した。半暗部の中ほど,あるいは光球寄りで最大速度2km/sほどになる。…

※「エバーシェッド,J.」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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