Physics

Physicists discover hidden aspects of electrodynamics

Radio waves, microwaves and even light itself are all made of electric and magnetic fields. The classical theory of electromagnetism was completed in the 1860s by James Clerk Maxwell. At the time, Maxwell's theory was revolutionary, and provided a unified framework to understand electricity, magnetism and optics. Now, new research advances knowledge of this theory.

'Indistinguishable photons' key to advancing quantum technologies

To really take off, advanced quantum information processing will require getting a better (experimental) grasp of an essential phenomenon called “indistinguishable photons.” A high degree of “indistinguishability” requires almost complete wave-packet overlap, or perfect photon matching, of energy, space, time and polarization.

NASA Astronaut to Star in First Ultra-High-Definition Live Stream from Space

NASA astronaut and Expedition 51 commander Peggy Whitson will take viewers 250 miles off the Earth to the International Space Station in the highest resolution video ever broadcast live from space at 1:30 p.m. EDT on Wednesday, April 26.

ATLAS Experiment searches for new symmetries of nature

The fundamental forces of nature are intimately related to corresponding symmetries. For example, the properties of electromagnetic interactions (or force) can be derived by requiring the theory that describes it to remain unchanged (or invariant) under a certain localised transformation. Such an invariance is referred to as a symmetry, just as one would refer to an object as being symmetric if it looks the same after being rotated or reflected. The particular symmetry related to the forces acting among particles is called gauge symmetry.

A prototype for a spin-wave majority logic gate that uses wave interference for information processing

Computer electronics are shrinking to small-enough sizes that the very electrical currents underlying their functions can no longer be used for logic computations in the ways of their larger-scale ancestors. A traditional semiconductor-based logic gate called a majority gate, for instance, outputs current to match either the "0" or "1" state that comprise at least two of its three input currents (or equivalently, three voltages). But how do you build a logic gate for devices too small for classical physics?

NASA to Reveal New Discoveries in News Conference on Oceans Beyond Earth

NASA will discuss new results about ocean worlds in our solar system from the agency’s Cassini spacecraft and the Hubble Space Telescope during a news briefing 2 p.m. EDT on Thursday, April 13.

Proton-nuclei smashups yield clues about 'quark gluon plasma'

Findings from physicists working at Europe's Large Hadron Collider are providing new insight about an exotic state of matter called the 'quark-gluon plasma' that occurs when protons and neutrons melt.

Diamonds coupled using quantum physics

Researchers at TU Wien have succeeded in coupling the specific defects in two such diamonds with one another. This is an important prerequisite for the development of new applications, such as highly sensitive sensors and switches for quantum computers.

Physicist discovers strange forces acting on nanoparticles

A new scientific paper published, in part, by a University of New Mexico physicist is shedding light on a strange force impacting particles at the smallest level of the material world.

NASA Astronaut Shane Kimbrough, Space Station Crewmates Return to Earth

Expedition 50 Commander Shane Kimbrough of NASA is among three crew members from the International Space Station (ISS) who returned to Earth Monday, after 173 days in space, landing in Kazakhstan at approximately 7:20 a.m. EDT (5:20 p.m. Kazakhstan time).

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