e-14371 for demonstrating the movement of progressive transverse waves. comprises 18 numbers of circular discs mounted equidistant from each others on a horizontal shaft in gradually varying degrees of eccentricity, with each disc having a vertical rod of same length supported onmore...
E-14375 For demonstrating the movement of progressive transverse and longitudinal waves. Comprises 18 numbers of circular discs mounted equidistant from each others on a horizontal shaft in gradually varying degrees of eccentricity, with each disc having a vertical rod of same lemore...
E-14376 For demonstrating the movement of progressive transverse and longitudinal waves. Comprises 24 numbers of circular discs mounted equidistant from each others on a horizontal shaft in gradually varying degrees of eccentricity, with each disc having a vertical rod of same lemore...