University of Pennsylvania

Mathematicians Solve 140-Year-Old Boltzmann Equation

(PhysOrg.com) -- Two University of Pennsylvania mathematicians have found solutions to a 140-year-old, 7-dimensional equation that were not known to exist for more than a century despite its widespread use in modeling the ...

May 13, 2010
4.8 / 5 (73) 5 | with audio podcast

Penn astrophysicists zero in on gravity theory

(Phys.org) -- Most people take gravity for granted. But for University of Pennsylvania astrophysicist Bhuvnesh Jain, the nature of gravity is the question of a lifetime. As scientists have been able to see ...

May 11, 2012
4.5 / 5 (40) 263 | with audio podcast

Cosmologists weigh cosmic filaments and voids

(Phys.org) —Cosmologists have established that much of the stuff of the universe is made of dark matter, a mysterious, invisible substance that can't be directly detected but which exerts a gravitational ...

Apr 17, 2014
4.2 / 5 (35) 20