Abstract
A CONSIDERABLE amount of work has been done on the ‘speed of fading’ of radio waves1–3. This quantity, often referred to as ντ, denotes the change in the amplitude in a certain time, τ, expressed as a fraction of the root mean square amplitude of the wave. The first-order theory indicates that the distribution-in-speed should be a normal one representable by: 
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References
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Banerji, R. B., Scientific Report No. 71, Ionosphere Research Laboratory, The Pennsylvania State University.
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BANERJI, R. Distribution-in-Speed of Fading of 150-kc./s. Waves. Nature 176, 131 (1955). https://doi.org/10.1038/176131a0
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DOI: https://doi.org/10.1038/176131a0


