Static noise

Japanese: 空電雑音 - くうでんざつおん
Static noise

…When the source exists in nature, it is called natural noise, and when it is caused by man-made objects, it is called artificial noise. Natural noise includes atmospheric noise, solar noise, and cosmic noise. Atmospheric noise is caused by lightning discharges in the atmosphere, and is strong in the long wave to short wave frequency range, and is a major disruptive factor for wireless communication in these frequency bands. …

*Some of the terminology that refers to "atmospheric noise" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…発生源が自然界に存在するとき,自然雑音と呼び,人工物によるとき人工雑音という。自然雑音には空電雑音,太陽雑音,宇宙雑音などがある。空電雑音は大気中の雷放電によるもので,長波帯から短波帯の周波数領域で強く,この周波数帯の無線通信にとって大きな妨害要因となる。…

※「空電雑音」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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