Ｅ層いーそう

noun

E layer; E region

Technical term in atmospheric physics; refers to the E layer of the ionosphere, a region of ionized air at about 90–150 km altitude.

• Ｅ層そうは昼ひる間まの電でん波ぱ伝でん搬ぱんに影えい響きょうを与あたえる。

  The E layer affects daytime radio wave propagation.