A new material developed at Penn State defies a fundamental law of physics, opening doors to highly efficient solar cells.

The first semester of an undergraduate physics course invariably spends a lot of time on two big ideas: The momentum principle and the work energy principle. Both deal with forces acting on an ...

If energy is the basic unit of currency in physics, the basic unit of currency in energy is not the Joule or the kilowatt-hour but the dollar. It is hard to believe that it would be financially viable ...

According to quantum physics, energy can be 'borrowed' -- at least for some time. Energies lower than zero are possible, much like a bank account that can be overdrawn. There are, however, certain ...

Low-energy experimental physics, on the other hand-- work in Atomic, Molecular, and Optical (AMO), or "Condensed Matter" (CM, the study of solids and liquids) physics, among others-- is much more ...

Astronomy Unknown physics may help dark energy act as 'antigravity' throughout the universe. Astronomy A 'cosmic car radio' could help scientists tune in to dark matter within the next 15 years.

The committee, formally known as the Particle Physics Project Prioritization Panel, or P5, was tasked by the U.S. Department of Energy and the National Science Foundation to lay out a road map for ...

Astronomers have spotted the highest-energy outburst of light from a pulsar ever seen. The discovery could indicate new physics around these incredibly dense, rapidly spinning dead stars.

Dark energy may have a completely unknown aspect of physics acting as an accomplice in its efforts to defy gravity, suppressing the growth of large-scale structures like galaxy superclusters.

The novel new approach is detailed in a paper published June 2 in the journal Classical and Quantum Gravity, by University of Geneva professor of theoretical physics Lucas Lombriser.. Related ...

Einstein’s cosmological constant (lambda) implied the existence of a repulsive form of gravity. Quantum physics holds that even the emptiest vacuum is teeming with energy in the form of ...