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News articles about "Physics"

Negative temperature negated

Negative temperature
Over the past 60 years several theories and experiments have claimed the existence of negative absolute temperatures in certain quantum systems This fuelled speculations about hyper efficient heat engines that could act as perpetual motion ... - Read More

Producing electricity on the Moon at night

Heat
Scientists from the Polytechnic University of Catalonia and other international collaborators have proposed a system of mirrors processed lunar soil and a heat engine to provide energy to vehicles and crew during the lunar night ... - Read More

Researchers grow liquid crystal 'flowers' that can be used as lenses

Crystal
A team of material scientists chemical engineers and physicists from the University of Pennsylvania has made another advance in their effort to use liquid crystals as a medium for assembling structures In their earlier studies ... - Read More

Physicists delve into fundamental laws of biological materials

Biological materials, biological
Physicists at the University of Chicago and the University of Massachusetts Amherst are uncovering the fundamental physical laws that govern the behavior of cellular materials We don't have any tools or formalism to think about ... - Read More

Ways of the photoelectric effect; How physicists have learned how to select them

In contrast to its apparent simplicity that brought Einstein his Nobel Prize the photoelectric effect when an electron is knocked out from its parent atom by a photon is quite complicated to analyze in general ... - Read More

Oil- and metal-munching microbes dominate deep sandstone formations

Analysis
Halomonas are a hardy breed of bacteria They can withstand heat high salinity low oxygen utter darkness and pressures that would kill most other organisms These traits enable these microbes to eke out a living ... - Read More

Radioactivity muddles alphabet of DNA

Curtin University researchers have shown natural radioactivity within DNA can alter chemical compounds providing a new pathway for genetic mutation The research recently published in Biochimica et Biophysica Acta General Subjects for the first time ... - Read More

Researchers develop advanced 3D 'force microscope'

Membrane proteins are the gatekeepers that allow information and molecules to pass into and out of a cell Until recently the microscopic study of these complex proteins has been restricted due to limitations of force ... - Read More

Ultrafast heating of water: This pot boils faster than you can watch it

Water, Water, Water
Scientists from the Hamburg Center for Free Electron Laser Science have devised a novel way to boil water in less than a trillionth of a second The theoretical concept which has not yet been demonstrated ... - Read More

Nanoparticles and their orbital positions

Physicists have developed a planet satellite model to precisely connect and arrange nanoparticles in three dimensional structures Inspired by the photosystems of plants and algae these artificial nanoassemblies might in the future serve to collect ... - Read More

Nanoscale friction: High energy losses in the vicinity of charge density waves

Friction, Density
In collaboration with the University of Basel an international team of researchers has observed a strong energy loss caused by frictional effects in the vicinity of charge density waves This may have practical significance in ... - Read More

New results from inside the ozone hole

Ozone, Ozone
NASA scientists have revealed the inner workings of the ozone hole that forms annually over Antarctica and found that declining chlorine in the stratosphere has not yet caused a recovery of the ozone hole More ... - Read More

Physicists provide answers for predicted behavior in relaxors: Thin films studied used in electronic devices

Thin films, Films
New research at the University of Arkansas shows that behavior can be predicted and understood in thin films made of materials called relaxors which can be used in electronic devices Physicists Sergey Prosandeev and Laurent ... - Read More

Noble gas molecule discovered in space

Gas, Space
A molecule containing a noble gas has been discovered in space by a team including astronomers from Cardiff University The find was made using a Cardiff led instrument aboard Europe's Herschel Space Observatory The molecule ... - Read More

Astronomers solve temperature mystery of planetary atmospheres

Astronomers
An atmospheric peculiarity Earth shares with Jupiter Saturn Uranus and Neptune is likely common to billions of planets University of Washington astronomers have found and knowing that may help in the search for potentially habitable ... - Read More

RAVAN to help solve an earth science mystery

Science, Science, Earth, earth
A new low cost cubesat mission led by the Johns Hopkins Applied Physics Laboratory in Laurel Md will demonstrate technology needed to measure the absolute imbalance in Earth's radiation budget for the first time giving ... - Read More

2012 solar storm points up need for society to prepare

A massive ejection of material from the sun initially traveling at over 7 million miles per hour that narrowly missed Earth last year is an event solar scientists hope will open the eyes of policymakers ... - Read More

Polymers can behave like insulators, semiconductors and metals -- as well as semimetals

Metals
Polymers can behave like insulators semiconductors and metals as well as semimetals Twenty researchers under the leadership of Xavier Crispin Docent in organic electronics at Linköping University are behind the breakthrough published in Nature Materials ... - Read More

Scientists scale terahertz peaks in nanotubes

Carbon, carbon
Carbon nanotubes carry plasmonic signals in the terahertz range of the electromagnetic spectrum but only if they're metallic by nature or doped In new research the Rice University laboratory of physicist Junichiro Kono disproved previous ... - Read More

A stopwatch for electron flashes: duration of energetic electron pulses measured using laser fields

Electron, Electron, Electron
A stopwatch made of light can determine the duration of extremely brief electron flashes Teams based in the Laboratory for Attosecond Physics LAP at LMU and at the Max Planck Institute of Quantum Optics have ... - Read More
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