Physics News

Ancient Egyptians Transported Large Objects over Wet Sand, Study Suggests

Drawing of a wall painting from the tomb of Djehutihotep, a semi-feudal ruler of an Ancient Egyptian province, 1880 BC. A person standing at the front of the sled is pouring water onto the sand.
May 1, 2014 by News Staff

According to a new study published in the journal Physical Review Letters, ancient Egyptians used a simple trick to make it easier to transport heavy colossi and pyramid stones by sledge – they moistened the sand. Drawing of a wall painting from the tomb of Djehutihotep, a semi-feudal ruler of an Ancient Egyptian province, 1880 BC. A person standing at the front of the sled is pouring water onto the sand. For the construction of the pyramids, ancient...

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The Large Hadron Collider, the world's largest and most powerful particle accelerator. Image credit: CERN.

Z(4430): CERN Physicists Confirm Existence of Exotic Hadrons

Apr 10, 2014 by News Staff

Scientists from CERN’s Large Hadron Collider beauty collaboration have confirmed the unambiguous observation of the long-sought exotic hadron Z(4430),...

This is an artist's impression of a synthetic magnetic monopole. Image credit: Heikka Valja.

Scientists Create Synthetic Dirac Monopole

Feb 3, 2014 by News Staff

For the first time ever, physicists have created and photographed synthetic magnetic monopoles by engineering an environment that mimics a monopole’s...

ASACUSA's experimental apparatus. Image credit: CERN.

CERN Scientists Create Antihydrogen Atoms

Jan 22, 2014 by News Staff

Physicists from CERN’s Atomic Spectroscopy and Collisions Using Slow Antiprotons (ASACUSA) project say they have produced at least 80 atoms of antihydrogen. Hydrogen’s...

IceCube Detects High-Energy Neutrinos from Outside Solar System

Nov 22, 2013 by Enrico de Lazaro

Physicists using the IceCube Neutrino Observatory at the South Pole have detected for the first time mysterious, high-energy neutrinos that originate outside...

Toronto University scientists have successfully demonstrated a thin, active cloak at microwave frequencies. Image credit: Michael Selvanayagam / George V. Eleftheriades.

Scientists Demonstrate Electromagnetic Invisibility Cloak

Nov 13, 2013 by News Staff

Two researchers at the University of Toronto have created and tested a new type of active invisibility cloak that can hide objects over a wide range of...

This image shows the four-quark structure of Zc (3900). Image credit: APS / Alan Stonebraker.

New Particle Points to Elusive Four-Quark Matter

Nov 12, 2013 by News Staff

According to physicists of the Beijing-based BESIII experiment, their discovery of a new subatomic particle named Zc (4020) hints at a novel class of four-quark...

Proton is a subatomic particle found in the nucleus of every atom. This artist's impression shows a proton and a neutron. Image credit: Joanna Griffin / Jefferson Lab / Penn State.

Physicists Determine Weak Charge of Proton for the First Time

Sep 19, 2013 by News Staff

An international collaboration of physicists conducting experiments at the Thomas Jefferson National Accelerator Facility has determined for the first...

Periodic table of the elements (University of California, Irvine).

Ununpentium: Scientists Confirm Existence of Element 115

Aug 28, 2013 by Sergio Prostak

An international team of physicists led by Lund University scientists has found new evidence for the existence of a synthetic super-heavy element with...

Scientists Detect Antimatter Particles in Solar Flares

Jul 9, 2013 by Sergio Prostak

Researchers from the United States and Russia analyzing microwave and magnetic-field data from solar-dedicated facilities and spacecraft have reported...

This computer simulation visualizes dark matter halo (Heidi Wu / Oliver Hahn / Risa Wechsler / Ralf Kaehler / Kavli Institute for Particle Astrophysics and Cosmology)

Dark Matter May Be Made Out of Majorana Fermions, Say Physicists

Jun 11, 2013 by News Staff

In a paper published online in the journal Physics Letters B (arXiv.org’s version), theoretical physicists from Vanderbilt University propose that dark...

Graphene-like structure of hydrogen phase IV (University of Edinburgh)

Physicists Measure Properties of Hydrogen Phase IV

Jun 5, 2013 by Enrico de Lazaro

Using high-pressure synchrotron radiation techniques at Brookhaven National Laboratory (BNL), a team of researchers has examined the structure, bonding...

Resonance ionization laser ion source of ISOLDE (CERN)

Physicists Measure Ionization Potential of Astatine, Rarest Naturally Occurring Element on Earth

May 23, 2013 by Sergio Prostak

In ground-breaking experiments conducted at the radioactive isotope facility ISOLDE at CERN, a multinational research team has investigated the atomic...

Artist's illustration of a butterfly as if departing from a moire pattern in graphene formed on top of a sheet of boron nitride (James Hedberg)

Hofstadter Butterfly Effect Observed for the First Time

May 17, 2013 by News Staff

Scientists from Japan and the United States have directly observed a rare quantum effect that produces a repeating butterfly-shaped energy spectrum first...

Heat cloak: a series of concentric rings lets heat propagating from left to right across a metallic sheet flow more readily around a thermally isolated disk than toward its center, leaving no sign of the disk in the temperature distribution on the right side; the colors represent temperatures measured with an infrared camera and are superimposed on a photo of the structure before the rubbery insulating material was added to the holes and gaps; the white lines connect points at the same temperature (R. Schittny / KIT)

Scientists Create Thermal Invisibility Cloak

May 15, 2013 by News Staff

A team of researchers from Germany and France reporting in the Physical Review Letters has developed and successfully tested a form of invisibility cloak...

The two observed events from August 2011, left, and January 2012, right. Each sphere represents a digital optical module; colors represent the arrival times of the photons where red indicates early and blue late times; the size of the spheres is a measure for the recorded number of photoelectrons (IceCube Collaboration)

IceCube Physicists Detect Two Record-Breaking Neutrinos

May 7, 2013 by Sergio Prostak

According to a new study submitted for publication in Physical Review Letters (arXiv.org version), two rare events observed in 2011 and 2012 by the IceCube...

The times and vertical (y) annihilation locations (green dots) of 10,000 simulated antihydrogen atoms in the decaying magnetic fields. There is a tendency for the anti-atoms to annihilate in the bottom half of the trap, as shown by the black solid line. The blue dotted line includes the effects of detector azimuthal smearing on the average; the smearing reduces the effect of gravity observed in the data. The red circles are the annihilation times and locations for 434 real anti-atoms, as measured by the particle detector (A. E. Charman, the ALPHA Collaboration)

Physicists Attempt to Measure Gravitational Mass of Antihydrogen

May 1, 2013 by News Staff

A team of researchers working with CERN’s Antihydrogen Laser Physics Apparatus (ALPHA) has reported the first direct measurement of gravity’s effect...

The layers of the Earth and their temperatures (European Synchrotron Radiation Facility)

Scientists: Earth’s Core Hotter than Previously Thought

Apr 29, 2013 by Sergio Prostak

French researchers have determined that the temperature of the Earth’s core is 10,800 degrees Fahrenheit (6,000 oC) – about 1,800 oF (1,000 oC)...

The B0 and B0s meson decays into K and π mesons were studied by CERN scientists. The decay into a negative K meson red track and a positive π green track is show here (LHCb experiment)

CERN Physicists Observe New Matter-Antimatter Difference

Apr 25, 2013 by Sergio Prostak

Scientists from CERN’s Large Hadron Collider beauty (LHCb) experiment have reported the first observation of matter-antimatter asymmetry in the decays...

This 3D image shows a cosmic-ray muon producing a large shower of energy as it passes through the NOvA far detector in Minnesota (NOvA collaboration)

NOvA Neutrino Detector Sees Particles in 3D

Apr 10, 2013 by News Staff

What will soon be the most powerful neutrino detector in the U.S. has recorded its first 3D images of particles. This 3D image shows a cosmic-ray muon...

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