Dear Reader ,
Here is your customized PHYSorg.com Newsletter for week 35:
New study suggests researchers can now test the 'theory of everything'
(PhysOrg.com) -- Researchers describe how to carry out the first experimental test of string theory in a paper published tomorrow in Physical Review Letters.
God did not create Universe: Hawking
God no longer has any place in theories on the creation of the Universe due to a series of developments in physics, British scientist Stephen Hawking said in extracts published Thursday from a new book.
White LEDs with super-high luminous efficacy could satisfy all general lighting needs
(PhysOrg.com) -- Researchers from the Nichia Corporation in Tokushima, Japan, have set an ambitious goal: to develop a white LED that can replace every interior and exterior light bulb currently used in homes and offices. The properties of their latest white LED - a luminous flux of 1913 lumens and a luminous efficacy of 135 lumens per watt at 1 amp - enable it to emit more light than a typical 20-watt fluorescent bulb, as well as more light for a given amount of power. With these improvements, the researchers say that the new LED can replace traditional fluorescent bulbs for all general lighting applications, and also be used for automobile headlights and LCD backlighting.
Radioactive decay rates vary with the sun's rotation: research
Radioactive decay rates, thought to be unique physical constants and counted on in such fields as medicine and anthropology, may be more variable than once thought.
Silicon oxide circuits break barrier: Nanocrystal conductors could lead to massive, robust 3-D storage
Rice University scientists have created the first two-terminal memory chips that use only silicon, one of the most common substances on the planet, in a way that should be easily adaptable to nanoelectronic manufacturing techniques and promises to extend the limits of miniaturization subject to Moore's Law.
Glasperlenspiel: Scientists propose new test for gravity
A new experiment proposed* by physicists at the National Institute of Standards and Technology may allow researchers to test the effects of gravity with unprecedented precision at very short distances -- a scale at which exotic new details of gravity's behavior may be detectable.
Variations in fine-structure constant suggest laws of physics not the same everywhere
(PhysOrg.com) -- One of the most controversial questions in cosmology is why the fundamental constants of nature seem fine-tuned for life. One of these fundamental constants is the fine-structure constant, or alpha, which is the coupling constant for the electromagnetic force and equal to about 1/137.0359. If alpha were just 4% bigger or smaller than it is, stars wouldn't be able to make carbon and oxygen, which would have made it impossible for life as we know it to exist. Now, results from a new study show that alpha seems to have varied a tiny bit in different directions of the universe billions of years ago, being slightly smaller in the northern hemisphere and slightly larger in the southern hemisphere. One intriguing possible implication is that the fine-structure constant is continuously varying in space, and seems fine-tuned for life in our neighborhood of the universe.
Why Americans believe Obama is a Muslim
There's something beyond plain old ignorance that motivates Americans to believe President Obama is a Muslim, according to a first-of-its-kind study of smear campaigns led by a Michigan State University psychologist.
Cheaper, better solar cell is full of holes
A new low-cost etching technique developed at the U.S. Department of Energy's National Renewable Energy Laboratory can put a trillion holes in a silicon wafer the size of a compact disc.
High-speed filter uses electrified nanostructures to purify water at low cost
(PhysOrg.com) -- By dipping plain cotton cloth in a high-tech broth full of silver nanowires and carbon nanotubes, Stanford researchers have developed a new high-speed, low-cost filter that could easily be implemented to purify water in the developing world.
First direct observation of unusual magnetic structure could lead to novel electronic, magnetic memory devices
In conventional ferromagnets, the individual magnetic moments of the atoms that together comprise the magnetism of the material are all aligned parallel, pointing in a common direction. In some magnets, quantum-mechanical interactions between the electrons of a material or the presence of internal electric fields, for example, mean that the magnetic arrangements are more complex.
Magnetism's subatomic roots: Study of high-tech materials helps explain everyday phenomenon
(PhysOrg.com) -- The modern world -- with its ubiquitous electronic devices and electrical power -- can trace its lineage directly to the discovery, less than two centuries ago, of the link between electricity and magnetism. But while engineers have harnessed electromagnetic forces on a global scale, physicists still struggle to describe the dance between electrons that creates magnetic fields.
Transition metal catalysts could be key to origin of life, scientists report
One of the big, unsolved problems in explaining how life arose on Earth is a chicken-and-egg paradox: How could the basic biochemicals -- such as amino acids and nucleotides -- have arisen before the biological catalysts (proteins or ribozymes) existed to carry out their formation?
Risk of marijuana's 'gateway effect' overblown, research shows
New research from the University of New Hampshire shows that the "gateway effect" of marijuana - that teenagers who use marijuana are more likely to move on to harder illicit drugs as young adults - is overblown.
Research on resting brains finds there's a lot going on even when 'idle'
The resting brain is anything but idle -- that simple proposition would be clear if you could peer into Mike Mrazek's noggin as he putters around his kitchen preparing his daily morning feast of scrambled eggs, oatmeal and fresh fruit.
Scientific breakthrough to pave the way for human stem cell factories
(PhysOrg.com) -- Large scale, cost-effective stem cell factories able to keep up with demand for new therapies to treat a range of human illnesses are a step closer to reality, thanks to a scientific breakthrough involving researchers at The University of Nottingham.
Dramatic climate change is unpredictable
The fear that global temperature can change very quickly and cause dramatic climate changes that may have a disastrous impact on many countries and populations is great around the world. But what causes climate change and is it possible to predict future climate change? New research from the Niels Bohr Institute at the University of Copenhagen shows that it may be due to an accumulation of different chaotic influences and as a result would be difficult to predict. The results have just been published in Geophysical Research Letters.
Study suggests dinosaurs killed off by more than one asteroid
(PhysOrg.com) -- Dinosaurs, along with over half of other species, became extinct at the end of the Cretaceous period about 65.5 million years ago, and many scientists believe this was due to a single impact with an asteroid that hit at Chicxulub in the Gulf of Mexico. Now a study published in the Geology journal proposes the impact that produced the Boltysh crater in the Ukraine may also have been involved in the extinctions, and there may have been a shower of asteroids or comets.
Researchers develop simple technique to visualize atomic-scale structures
Researchers at the California Institute of Technology (Caltech) have devised a new technique -- using a sheet of carbon just one atom thick -- to visualize the structure of molecules. The technique, which was used to obtain the first direct images of how water coats surfaces at room temperature, can also be used to image a potentially unlimited number of other molecules, including antibodies and other biomolecules.
Why fish oils work swimmingly against diabetes
Researchers at the University of California, San Diego School of Medicine have identified the molecular mechanism that makes omega-3 fatty acids so effective in reducing chronic inflammation and insulin resistance.
This email is a free service of PhysOrg.com
You received this email because you subscribed to our list.
If you no longer want to receive this email use the link below to unsubscribe.
http://www.physorg.com/profile/nwletter/
You are subscribed as mail@joashmabs.com
No comments:
Post a Comment