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The picture below shows how ionosphere plays a role in the radio transmission. The ionosphere can...
The picture below shows how ionosphere plays a role in the radio transmission. The ionosphere can be considered to have an index variation along the altitude. (a) Explain what is happening (Hint: there is an optical device based on a similar property.) (b) If the trajectories for different frequency (HF>MH>LF) are as below, what can be said about the dispersion of ionosphere?
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