Although the Navier-Stokes equations are the foundation of modern hydrodynamics, adopting them to quantum systems has so far been a major challenge. Researchers from the Faculty of Physics at the University of Warsaw, Maciej Łebek, M.Sc. and Miłosz Panfil, Ph.D., Prof. UW, have shown that these equations can be generalised to quantum systems, specifically quantum liquids in which the motion of particles is restricted to one dimension. This discovery opens up new avenues for research into transport in one-dimensional quantum systems. The paper, published in the prestigious Physical Review Letters, was awarded an ‘editors’ suggestion'.