heaviside layer   (TTS Sound)

The heaviside_layer has 1 Senses.

• e layer, heaviside layer, e region, kennelly-heaviside layer
• a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length
• 電離層の一部（地上50マイルから90マイル）で中長波の電波を反射する