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radio waves

An historical illustration of radio waves. Heinrich Rudolf Hertz (1857-1894) discovered radio waves in 1886-1889. He used Maxwell's theories to construct an oscillating electrical circuit with a spark gap. With such a circuit, Maxwell had predicted that electromagnetic radiation would be produced. Hertz showed this to be correct, and devised a loop antenna to detect the waves. He was also able to show that these waves travelled at the speed of light.
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Title:
radio waves
Caption:
An historical illustration of radio waves. Heinrich Rudolf Hertz (1857-1894) discovered radio waves in 1886-1889. He used Maxwell's theories to construct an oscillating electrical circuit with a spark gap. With such a circuit, Maxwell had predicted that electromagnetic radiation would be produced. Hertz showed this to be correct, and devised a loop antenna to detect the waves. He was also able to show that these waves travelled at the speed of light.
Credit:
Album / NYPL/SCIENCE SOURCE
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Image size:
6033 x 1832 px | 31.6 MB
Print size:
51.1 x 15.5 cm | 20.1 x 6.1 in (300 dpi)
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