Experiments in Magnetohydrodynamics Available to Purchase

Three student experiments in magnetohydrodynamics (MHD) are described which show that the electrical conductivity of the local water supply $(∼3×10−3 mho/m)$ can be sufficient to produce observable effects. Measurements are made of the distribution of induced voltage along a diverging duct, the power extracted from a duct under load, and the change in the pressure gradient along a duct produced by an applied MHD body force.