(Phys.org) —Splitting water into its components, two parts hydrogen and one part oxygen, is an important first step in achieving carbon-neutral fuels to power our transportation infrastructure – including automobiles and planes.
(Phys.org) —A team of scientists who specialize in multiple-choice test assessment at Brock and Trent University's in Canada has conducted a study to find out if students could use Benford's law to help them pass multiple-choice physics tests.
The Guardian Do Comets Zoom Across the Sky? Wired Note: I wrote this before comet ISON had it's close encounter with the Sun. The first reports were that ISON had broken up and not survived the intense sunlight.
(Phys.org) —Japanese construction firm Shimizu Corp. has unveiled a proposal that entails building a solar panel array around the moon's equator, then sending the power it collects back to Earth. They are calling the project LUNA RING.
On April 27, a powerful flash of radiation erupted from deep space -- the gamma-ray burst was the brightest on record, challenging some of the leading theories on how the most powerful explosions in the known Universe occur.
Almost all the mass of an atom is concentrated in its nucleus in the form of protons and neutrons. Some nuclei are intrinsically unstable, existing for only a short time before decaying into stable nuclei.
Karlsruhe Institute of Technology (KIT) researchers have taken a big step towards miniaturizing magnetic data memory down to a single-atom bit: they fixed a single atom on a surface so the magnetic spin remained stable for ten minutes.
“A single atom fixed to a substrate is [typically] so sensitive that its magnetic orientation is stable only for less than a microsecond,” said Wulf Wulfhekel of KIT.
A compound of several million atoms has been needed to stabilize a magnetic bit longer than that. That’s because the magnetic moments of these atoms are normally easily destabilized by interactions with electrons, nuclear spins, and lattice vibrations of the substrate.
The finding opens up the possibility of designing more compact computer memories and could also be the basis for quantum computers, Wulfhekel said.
In their experiment, the researchers placed a single holmium atom onto a platinum substrate. At temperatures close to absolute zero (about 1 degree Kelvin), the atom was nearly vibration-free. They measured the magnetic orientation of the atom using the fine tip of a scanning tunneling microscope. The magnetic spin changed after about 10 minutes — “about a billion times longer than that of comparable atomic systems,” Wulfhekel said.
Toshio Miyamachi et al., Stabilizing the magnetic moment of single holmium atoms by symmetry, Nature, 2013, DOI: 10.1038/nature12759
The ATLAS experiment at CERN has released preliminary results that show evidence that the Higgs boson decays to two tau particles. Taus belong to a group of subatomic particles called the fermions, which make up matter.
Lidar rangefinders, which are common tools in surveying and in autonomous-vehicle control, among other applications, gauge depth by emitting short bursts of laser light and measuring the time it takes for reflected photons to arrive back and be...
(Phys.org) —The frictional characteristics of nanotextured surfaces cannot be fully described by the framework of Amontons' laws of friction, according to new research from the University of Bristol, published in ACS Nano.
NASA uses F/A-18 to test Space Launch System Gizmag Earlier this month, NASA carried out tests on a new flight system for the Space Launch System (SLS), the heavy lifting rocket that will send the manned Orion spacecraft into deep space.
A combination of pop songs, talkback radio and cutting-edge science has enabled Australian astronomers to identify a way to prevent catastrophic, multi-billion dollar space junk collisions, a new study has revealed.
The NASA image of the day shows the supermassive black hole at the center of spiral galaxy M81. At the center of spiral galaxy M81 is a supermassive black hole about 70 million times more massive than our sun.