Add Yahoo as a preferred source to see more of our stories on Google. Galileo, holding two balls, about to perform his legendary experiment. Hulton Archive/Stringer via Getty Images If you drop a ...

Researchers from the Okinawa Institute of Science and Technology (OIST) say they've taken a step towards "Schrödinger’s cat ...

A radical theory that consistently unifies gravity and quantum mechanics while preserving Einstein's classical concept of spacetime has been announced in two papers published simultaneously by UCL ...

Three experiments have vetted quantum Darwinism, a theory that explains how quantum possibilities can give rise to objective, classical reality. Click to tell Google to prioritize Quanta and see more ...

Explicit learning goals Interactive lectures Transformed homework problems (including a "bank" of potential HW problems) Common student difficulties & in-class group activities/tutorials Concept tests ...

In a new Physical Review Letters study, researchers propose an experimental approach that could finally determine whether gravity is fundamentally classical or quantum in nature. The nature of gravity ...

Two people measure the time it takes for a pendulum to complete one full swing separately. They check how their clocks are running, agree on what counts as one full swing from start to finish, and ...

Exploring cause and effect A photo of the Sagnac interferometer used to generate polarization-entangled photon pairs during a basis measurement. (Courtesy: Davide Poderini/Sapienza University of Rome) ...

Exotic paths: artist's impression of the microwave triple-slot experiment. Courtesy: G Rengaraj et al/New Journal of Physics) The importance of including exotic “non-classical paths” in analyses of ...