Although H2O has been the topic of considerable research since the beginning of the century, the peculiar physical properties are still not well understood. We discuss recent experiments and simulations relating to the hypothesis that, in addition to the known critical point in water, there...

We investigate for the first time spin-lattice relaxation caused by particles diffusing in disordered environments. For noninteracting particles on a fractal substrate with fractal dimension df and diffusion exponent dw, we find that the NMR correlation functions G(q)(t) are asymptotically...