Important issues in stable, strongly-stratified flows, often occurring in the atmosphere and oceans, are when and how `classical' 3D turbulence appears, and the properties of the resulting turbulence. In the oceans, at horizontal scales above a few meters, for example, buoyancy often exerts a dominant...

Cellular processes are typically controlled by gene regulatory circuits that are comprised of interactions among genes and proteins. However, the functional importance of a particular pattern of interactions (architecture) that constitutes a genetic circuit is typically poorly understood. Our model...

In the early 1950’s Purcell and Ramsey hypothesized that the electron might have a CP-violating electric dipole moment proportional to its spin.  This hypothesis set in motion a hunt for the electron’s electric dipole moment (e-EDM) that is still ongoing.   In a prototypical experiment,...

The tools to prepare mechanical structures in fundamental quantum states are being rapidly developed, using both optical and electrical techniques. The first major goal of this community is to prepare and measure the quantum ground state. To accomplish this, we are preforming experiments with a...

Internal waves are ubiquitous in the ocean, and they play an important role in energy exchange. Internal wave spatial structures range from very localized beams to very large scale modes. We present a novel laboratory internal wave generator that enables us to study internal waves in a fluid with...

Experiments on the Belousov-Zhabotinskii reaction in a stirred flow reactor reveal behavior that is strikingly similar to that generated by one-dimensional maps with a single extremum.  In particular, a period-doubling sequence is observed that leads to a regime containing both chaotic and periodic...