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Radio waves are low-frequency electromagnetic waves that are used for various types of communications and astronomy. Learn about their properties, applications, and examples from Britannica's experts.
Radio waves are a type of electromagnetic radiation with low frequencies and long wavelengths, used for communication, broadcasting and other applications. Learn how radio waves are generated, received, propagated and regulated, and see examples of natural and artificial sources of radio waves.
10 Αυγ 2016 · Learn what radio waves are, how they are produced by astronomical objects with changing magnetic fields, and how they are observed by radio telescopes. See examples of radio emissions from the Sun, planets, stars, and galaxies, and how they differ from visible light.
23 Ιουν 2023 · Learn how radio waves are utilized in various fields, such as communication, entertainment, navigation, and science. From AM and FM radio to Wi-Fi networks, GPS, radar, and MRI, discover the applications of this type of electromagnetic radiation.
27 Μαΐ 2024 · Radio waves, a type of electromagnetic radiation, are fundamentally important in the field of electrodynamics and modern communication. They are waves of electric and magnetic fields traveling through space at the speed of light, approximately 3 ×108 meters per second.
Learn about radio waves, a type of electromagnetic radiation with long wavelengths and low frequencies. Find out how humans use radio waves for communications and how they interact with Earth's atmosphere.
