Velocity Distribution Graph (IMAGE) Penn State Caption Evolution of the velocity distribution of a trapped gas of strongly interacting bosons expanding in one dimension. The initially peaked 'bosonic' distribution (purple line) gradually changes into the rounded 'fermionic' distribution (dark red line). The final shape is just like the Fermi sea that would characterize fermions in the same initial trap. Credit Weiss Laboratory, Penn State Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.