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Books Books 11 - 14 of 14 on ... into still water the velocity of the group is less than that of the individual....  
" ... into still water the velocity of the group is less than that of the individual waves of which it is composed ; the waves appear to advance through the group, dying away as they approach its anterior limit. This phenomenon seems to have been first... "
The Theory of Sound - Page 475
by John William Strutt Baron Rayleigh - 1894 - 984 pages
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Tribute to Emil Wolf: Science and Engineering Legacy of Physical Optics

Tomasz Jannson - Biography & Autobiography - 2005 - 510 pages
...Rayleigh [3] then mistakenly attributed the original definition of the group velocity to Stokes, stating that "when a group of waves advances into still water,...equal wavelengths, advancing in the same direction? Rayleigh [4] then applied these results to explain the difference between the phase and group velocities...
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Electromagnetic and Optical Pulse Propagation 1: Spectral Representations in ...

Kurt E. Oughstun - Science - 2006 - 456 pages
...then mistakenly attributed the original definition of the group velocity to Stokes, stating that [43] when a group of waves advances into still water, the...equal wave-lengths, advancing in the same direction. Rayleigh then applied these results to explain the difference between the phase and group velocities...
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Proceedings of the London Mathematical Society, Volume 9

Electronic journals - 1878
"Papers presented to J. E. Littlewood on his 80th birthday" issued as 3d ser., v. 14 A, 1965.
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Nature, Volume 17

Sir Norman Lockyer - Electronic journals - 1878
...away as they approach its anterior limit. This phenomenon seems to have been first explained by Prof. Stokes, who regarded the group as formed by the superposition...equal wave-lengths advancing in the same direction. The writer's attention was called to the subject about two years since by Mr. Froude, and the same...
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