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Anything that is round or has cyclical or repeating properties — such as radio waves — involves pi.—ABC News, 14 Mar. 2026 However, in 2022, scientists managed to capture an image of light, in the form of radio waves, from hot gases swirling around the edge of Sgr A*.—Brett Tingley, Space.com, 11 Mar. 2026 Just the invisible radio waves.—Kaitlyn Tiffany, The Atlantic, 10 Mar. 2026 Beneath the sea, visibility is low and the radio waves used for radar don’t travel far.—James Dwyer, Fortune, 6 Mar. 2026 See All Example Sentences for radio wave