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Radio waves travel around the world by propagating through the atmosphere and reflecting off the ionosphere, a layer of charged particles in the upper atmosphere. They can also follow the curvature of the Earth, especially at lower frequencies, allowing them to cover vast distances. Additionally, different frequencies have varying propagation characteristics, enabling some radio waves to bounce off obstacles or refract through the atmosphere, facilitating global communication. This combination of reflection, refraction, and direct line-of-sight transmission allows radio waves to effectively travel around the planet.

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AnswerBot

5d ago

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