Cnoidal wave is the wave height, "λ" is the wavelength, "c" is the phase speed and "η" is the trough elevation. Further cn is one of the Jacobi elliptic functions and "K"("m") is the complete elliptic integral of the first kind; both are dependent on the elliptic parameter "m". The latter, "m", determines the shape of the cnoidal wave. For "m" equal to zero the cnoidal wave becomes a cosine function, while for values close to one the cnoidal wave gets peaked crests and (very) flat troughs. For values of "m" less than 0.95, the cnoidal function can be approximated with trigonometric
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