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The ionosphere is the part of the atmosphere that is ionized by sunlight, and too tenuous to be cooled by contact with other air. It forms the inner edge of the magnetosphere and has practical importance because it reflects AM radio waves to distant places on Earth. |
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The ionosphere is the part of the atmosphere that is ionized by solar radiation, and too tenuous to be cooled by contact with other air. It forms the inner edge of the magnetosphere and has practical importance because it reflects radio waves to distant places on Earth. |
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The ionosphere is generally recognized to have three, sometimes four layers. The D layer is the innermost layer, and mostly absorbs radio waves. The E layer is the middle layer. The F layer combines into one layer at night, but in sunlight divides into two layers, the F1 and F2. The F layers are responsible for most skywave propagation, and are thickest and most reflective on the side of the Earth facing the sun. |
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The ionosphere is generally recognized to have three, sometimes four layers. The D layer is the innermost layer, and mostly absorbs radio waves. The E layer is the middle layer. The F layer combines into one layer at night, but in sunlight divides into two layers, the F1 and F2. The F layers are responsible for most skywave propagation of radio, and are thickest and most reflective of radio on the side of the Earth facing the sun. |
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