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They are reflected round the curve of the Earth off layers in the atmosphere which act as mirrors (the ionosphere).

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15y ago
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2mo ago

AM carrier waves have lower frequencies compared to FM waves, which allows them to travel farther. Lower frequencies have longer wavelengths, which can diffract and bend around obstacles, enabling AM signals to cover long distances by reaching around the curvature of the Earth. This property makes AM transmission suitable for long-distance communication, such as broadcasting over large geographic areas.

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Q: AM carrier waves have relatively low frequencies they can travel quite a distance why?
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