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• Ionosphere - Wikipedia, the free encyclopedia

  Solar radiation, acting on the different compositions of the atmosphere with height, generates layers of ionization: D layer. The D layer is the innermost layer, 50 km to 90 km above ...

• D layer definition of D layer in the Free Online Encyclopedia.

  ionosphere (īŏn`əsfēr), series of concentric ionized layers forming part of the upper atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial ...

• D-layer definition of D-layer in the Free Online Encyclopedia.

  ionosphere (īŏn`əsfēr), series of concentric ionized layers forming part of the upper atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial ...