...Observations to determine the relative number of sunspots are simple observations that can be done with a small telescope, but given the recent thinking that sunspot activity is just one type of solar activity, it can be said to be a very important and most easily obtained indicator of the functioning of the sun. From [Flare]...When the sun is viewed through a monochromatic filter of Hα radiation (6563Å), a bright area (sheep spot) near a sunspot suddenly begins to shine for 10 minutes to several hours. Flares were discovered in 1859 by British RC Carrington (1826-75) who found an unusually bright spot near a sunspot in white light, but flares are rarely visible in white light. In general, flares are more noticeable in radio waves, X-rays, and ultraviolet rays than in visible light, and the amount of radiation of these electromagnetic waves increases significantly. ... *Some of the terminology that mentions "Carrington, RC" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…黒点相対数を求める観測は,小望遠鏡でもできる簡単な観測であるが,黒点活動はいろいろある太陽活動の中の一つであるという最近の考え方からすると,太陽の働きのもっとも手軽に得られる非常に重要な指標ということができる。 【フレア】より…太陽をHα線(6563Å)の単色フィルターで見ていると,黒点の付近の明るい領域(羊斑)が突如10分から数時間にわたって輝き出す現象として知られている。フレアの発見は,1859年イギリスのキャリントンR.C.Carrington(1826‐75)が黒点の近くに白色光で異常に輝く点を見つけたことによるが,フレアが白色光で見えることはまれである。一般にフレアは可視光よりも電波,X線,紫外線でより顕著に見られ,これらの電磁波の放射量が著しく増大する。… ※「キャリントン,R.C.」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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