Magnetograph

Japanese: マグネトグラフ(英語表記)magnetgraph
Magnetograph
The term "solar magnetograph" is used to refer to a device that measures the amount of polarization of spectral lines caused by the Zeeman effect, and is used to determine the solar magnetic field. The combination of a polarimeter and a spectrometer, or a polarizing filter (Lyot ​​filter), has been attempted to be developed since the discovery of the magnetic field of sunspots, but with the advancement of electronic technology, it was first put to practical use in 1953 by H. W. Babcock (1912- ) at the Mount Wilson Observatory.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
一般には磁場測定装置のことであるが,とくにスペクトル線のゼーマン効果で生ずる偏光量を測定して太陽磁場を求める装置solar magnetgraphをこう呼んでいる。偏光計と分光器,あるいは偏光フィルター(リヨ・フィルター)の組合せで,黒点磁場の発見以来開発が試みられてきたが,電子技術の進歩にともない,1953年ウィルソン山天文台でバブコックH.W.Babcock(1912‐ )によって太陽磁場測定に初めて実用化された。

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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