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# On the existence of undistorted progressive waves (UPWs) of arbitrary speeds 0≤ϑ

• ##### Jian-Yu Lu
Foundations of Physics (Impact Factor: 1.17). 27(3):435-508. DOI: 10.1007/BF02550165

ABSTRACT We present the theory, the experimental evidence and fundamental physical consequences concerning the existence of families
of undistorted progressive waves (UPWs) of arbitrary speeds 0≤ϑ<∞, which are solutions of the homogeneuous wave equation,
the Maxwell equations, and Dirac, Weyl, and Klein-Gordon equations.

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