This study investigated how visual attention differed between those who correctly versus incorrectly answered introductory physics problems. We recorded eye movements of 24 individuals on six different conceptual physics ...

We have compared students’ responses on four multiple-choice force concept inventory ~FCI! questions with similar responses to equivalent open-ended questions. Our results indicate a good agreement between the percentages ...

We describe a pump-probe scheme with which the spatial asymmetry of dissociating molecular fragments—as controlled by the carrier-envelope phase of an intense few-cycle laser pulse—can be enhanced by an order of magnitude ...

We study the evolution of an inflation-generated magnetic field, due to its coupling to fluid motions, during cosmological phase transitions. We find that the magnetic field stays almost unchanged on large scales, while ...

The next generation of space-based galaxy surveys is expected to measure the growth rate of structure to a level of about one percent over a range of redshifts. The rate of growth of structure as a function of redshift ...

We use angular size versus redshift data for galaxy clusters provided by Bonamente and collaborators to place constraints on model parameters of constant and time-evolving dark energy cosmological models. These constraints ...

We use 21 Hubble parameter versus redshift data points, from Simon et al. (2005), Gazta~naga et al. (2009), Stern et al. (2010), and Moresco et al. (2012a), to place constraints on model parameters of constant and time-evolving ...

We investigated introductory physics students’ mental models of sound propagation. We used a phenomenographic method to analyze the data in the study. In addition to the scientifically accepted Wave model, students used ...

We report measurements and theoretical simulations of high-order harmonic generation (HHG) in aligned N2 molecules using a 1200-nm intense laser field when the generating pulse is perpendicular to the aligning ...