d region, d region anlamı, İngilizce İngilizce Sözlük, Dictionary

Bulunduğunuz Sayfa: Anasayfa

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d region

İngilizce Anlamı - English Translation

* Noun1. the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves
(synonym) D-layer
(hypernym) region, part
(part-holonym) ionosphere
* That portion of the ionosphere existing approximately 50 to 95 km above the surface of the Earth. ( 188 ) Note: Attenuation of radio waves, caused by ionospheric free-electron density generated by solar radiation, is pronounced during daylight hours. Because solar radiation is not present at night, ionization ceases, and hence attenuation of radio waves ceases.