…The strength of radio waves is expressed as the amount of energy that pours down on the Earth's surface per unit area (m2) per second per unit frequency (Hz). This is called radio wave flux density, but in the case of solar radio waves, it is convenient to measure the flux density in units of 10-22 W/(m2・Hz), which is called the solar flux unit. Radio waves are emitted not from the main body of the Sun, the so-called photosphere, but from the hot, thin atmosphere surrounding the photosphere. … *Some of the terminology that mentions "solar flux unit" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…電波の強さは,地球表面で単位面積(m2)に単位周波数(Hz)当り毎秒ふりそそぐエネルギー量で表す。これを電波フラックス密度というが,太陽電波の場合にはフラックス密度を10-22W/(m2・Hz)を単位として測るのが便利であり,これを太陽フラックス単位solar flux unitと呼んでいる。 電波が放射されるのは,太陽の本体,いわゆる光球ではなく,光球をとりまく高温希薄な大気の中である。… ※「solar flux unit」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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