Theory of Fluids Enters the 21st Century
The Navier-Stokes equations, first developed in the 19th century, are enormously successful at predicting how fluids flow and swirl, but they fail to account for the existence of swarms of microscopic bits that make up matter. Now physicists have a theory that does. It is the fruit of a 20-year effort to rebuild the theory of fluids from the ground up. Along the way, physicists have come up with a whole new way of defining what it means to be a fluid, based on fundamental properties known as symmetries, and have shown that the Navier-Stokes equations are a consequence of symmetries, which explains why the equations take the forms that they do. Dr. Kristan Jensen, a physicist at the University of Victoria, has contributed to this effort through the study of black holes.
