Weird effect: Have you ever noticed that screwdrivers in your toolbox can seemingly change form? (Courtesy: iStock/M_a_y_a) As a new decade dawns, you will be thrilled to learn that I have come across ...

In the Fall I'll be starting teaching again, after a semester away on sabbatical and then enjoying teaching relief during my first semester at Penn. I'll be teaching a course that I truly love, and ...

Whether it is a cube of sugar or a chunk of a mineral, a mathematical analysis can identify how many fragments of each size ...

Our group studies the physics of imaging and new methods of imaging physics. Examples include optical hydrodynamics, in which the propagation of light is described in terms of fluid flow, statistical ...

Optical lattice clocks are devices that measure the passing of time via the frequency of light that is absorbed or emitted by ...

A trio of professors in the U.S. won the Nobel Prize in physics for work that enabled the creation of macroscopic quantum systems, a foundation of quantum computers and other technology. John Clarke, ...