You are looking for
Advanced search
Neutrinos Hint of Matter-Antimatter Rift
An early sign that neutrinos behave differently than antineutrinos suggests an answer to one of the biggest questions in physics. As neutrinos and antineutrinos change flavors they may illuminate the...
Mass and Angular Momentum, Left Ambiguous by Einstein, Get Defined
...mathematical physicist Roger Penrose, another pioneer of black hole physics, identified the task of characterizing quasilocal mass — “where one does not need to go ‘all the way to infinity’...
Tadashi Tokieda’s Special Kind of Magic
...the world in a toy. Tadashi sees in toys, — just like children’s toys, little playthings — the whole universe that’s in there, the principles of physics. He is a...
Beyond the Second Law
...law of thermodynamics has reigned over physics, chemistry, engineering and biology. Now, an upgrade is underway. Thermodynamics — the study of energy — originated during the 1800s, as steam engines...
Physicists Nail Down the ‘Magic Number’ That Shapes the Universe
...no understanding,” as Richard Feynman described it. Paul Dirac considered the origin of the number “the most fundamental unsolved problem of physics.” Numerically, the fine-structure constant, denoted by the Greek...
Cryptographers Discover a New Foundation for Quantum Secrecy
...to information security in the 1980s, a few researchers discovered that computational hardness wasn’t the only way to safeguard secrets. Quantum theory, originally developed to understand the physics of atoms,...
Particle Physicists Puzzle Over a New Duality
A hidden link has been found between two seemingly unrelated particle collision outcomes. It’s the latest example of a mysterious web of mathematical connections between disparate theories of physics. Last...
Toward a Grand Unified Theory of Snowflakes
Snow crystals come in two main types. The “pope” of snowflake physics has a new theory that explains why. Kenneth Libbrecht is that rare person who, in the middle of...
Physicists Rewrite a Quantum Rule That Clashes With Our Universe
...of Harvard University have collaborated on an effort to replace unitarity in quantum physics with an alternative rule called isometry. Bianca Dittrich, of the Perimeter Institute for Theoretical Physics, struck...