Propagation constant a conductor. The skin effect causes R along the conductor to be approximately dependent on frequency according to Losses in the dielectric depend on the loss tangent (tan "δ") of the material divided by the wavelength of the signal. Thus they are directly proportional to the frequency. The attenuation constant for a particular propagation mode in an optical fiber is the real part of the axial propagation constant. In electromagnetic theory, the phase constant, also called phase change constant, parameter or coefficient is the imaginary component of the propagation constant for a plane wave. It represents the change in phase
Live! Go for What You Know of Travers and Thrall bridged the gap between what it calls "dramatic changes" in metal in the late 1970s: Travers emblematized "the blues-rock sound of sixties and seventies metal" whereas Thrall's playing represents the newer wave in metal (represented by Eddie van Halen): "The combining of the two players' solos during this time showed a rare detente between two generations of hard rockers and, although short-lived, it was extremely exciting." The album was produced by Tom Allom, who had worked on the first five Black Sabbath albums as a sound engineer, had produced two albums by The Tourists, and would