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Rescooped by Scott Torquato from Astronomy physics and quantum physics
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Molecular engineers record an electron's quantum behavior

Molecular engineers record an electron's quantum behavior | Physics N'Stuff | Scoop.it
A team of researchers led by the University of Chicago has developed a technique to record the quantum mechanical behavior of an individual electron contained within a nanoscale defect in diamond. Their technique uses ultrafast pulses of laser light both to control the defect's entire quantum state ...

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Rescooped by Scott Torquato from Physics
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Imaging ferroelectric domains

Imaging ferroelectric domains | Physics N'Stuff | Scoop.it
(Phys.org) —When thin films of ferroelectric materials are grown on single-crystal substrates, they can develop regions of aligned polarization—called "domains"—that often adopt complex patterns.

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Quantum dots provide complete control of photons

Quantum dots provide complete control of photons | Physics N'Stuff | Scoop.it
By emitting photons from a quantum dot at the top of a micropyramid, researchers at Linköping University are creating a polarized light source for such things as energy-saving computer screens and wiretap-proof communications.

Via José Gonçalves
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Rescooped by Scott Torquato from Space & Time
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Long-Term Climate Warming Trend Sunstained in 2013

Long-Term Climate Warming Trend Sunstained in 2013 | Physics N'Stuff | Scoop.it

NASA scientists say 2013 tied with 2009 and 2006 for the seventh warmest year since 1880, continuing a long-term trend of rising global temperatures. With the exception of 1998, the 10 warmest years in the 134-year record all have occurred since 2000, with 2010 and 2005 ranking as the warmest years on record.


Via Michele Diodati
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The Vacuum is NOT Empty

An atom is mostly empty space, but empty space is mostly not empty. The reason it looks empty is because electrons and photons don't interact with the stuff that is there, quark and gluon field fluctuations.


It actually takes energy to clear out space and make a true 'empty' vacuum. This seems incredibly counter-intuitive but we can make an analogy to a permanent magnet. When at low energies, like at room temperature, there is a magnetic field around the magnet due to the alignment of all the magnetic moments of the atoms. But if you add some energy to it by heating it, the particles gain thermal energy, which above the Curie temperature makes their magnetic moments randomly oriented and hence destroying the magnetic field. So in this case energy is needed to clear out the field, just as in the quantum vacuum.

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Smile, hydrogen atom, you're on quantum camera - New Scientist

Smile, hydrogen atom, you're on quantum camera - New Scientist | Physics N'Stuff | Scoop.it
Smile, hydrogen atom, you're on quantum camera
New Scientist
"This addresses a fundamental system in quantum physics," says Christopher Smeenk of the University of Ottawa in Canada. The technique may be used to study larger atoms, he says.

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Rescooped by Scott Torquato from Space & Time
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Scientists capture first images of molecules before and after reaction

Scientists capture first images of molecules before and after reaction | Physics N'Stuff | Scoop.it

Every chemist’s dream – to snap an atomic-scale picture of a chemical before and after it reacts – has now come true, thanks to a new technique developed by chemists and physicists at the University of California, Berkeley.


Via Michele Diodati
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Neutrino Telescopes Launch New Era of Astronomy

Neutrino Telescopes Launch New Era of Astronomy | Physics N'Stuff | Scoop.it

When scientists using a giant, icy detector in Antarctica announced in November they had found evidence of neutrino particles from outer space, scientists hailed the discovery as the beginning of a new era in neutrino astronomy.


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NIF experimental campaign highlighted by Physical Review Letters

NIF experimental campaign highlighted by Physical Review Letters | Physics N'Stuff | Scoop.it

Demonstrating the controlled fusing of deuterium and tritium (hydrogen isotopes), such that more energy is produced than is used to create the fusions, is one of the stated goals of the National Ignition Facility (NIF). Two papers published Feb. 5 in Physical Review Letters describe the "high-foot" series of experiments begun last spring, which bring NIF closer to achieving this goal.


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Rescooped by Scott Torquato from Space & Time
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Stephen Hawking claims our picture of black holes needs a makeover

Stephen Hawking claims our picture of black holes needs a makeover | Physics N'Stuff | Scoop.it

Stephen Hawking's new idea says that even if matter falls toward a black hole, beyond scientists calculate the event horizon to be, it may reemerge in a highly jumbled form later. Here, an artist imagines what black hole Cygnus X-1 looks like as it pulls material from a nearby star.


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Rescooped by Scott Torquato from Science technology and reaserch
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Novel exfoliation method paves the way for two-dimensional materials to be used in printable photonics

Novel exfoliation method paves the way for two-dimensional materials to be used in printable photonics | Physics N'Stuff | Scoop.it
A team of scientists from the National University of Singapore (NUS) has successfully developed a method to chemically exfoliate molybdenum disulfide crystals, a class of chalcogenide compounds, into high quality monolayer flakes, with higher yield...

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The Essence of Quantum Mechanics - S4A

The Essence of Quantum Mechanics - S4A | Physics N'Stuff | Scoop.it

Quantum mechanics is the most accurate and tested scientific theory, Its applications to real life are countless, as all new technologies are based on its principles. Yet, it's also probably the most misunderstood theory, because it constantly contradicts common sense. This article presents the most important features of the theory.

 


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Physics: Transforming lives

Physics: Transforming lives | Physics N'Stuff | Scoop.it
This document presents a series of case studies prepared by the Institute in partnership with the Engineering and Physical Sciences Research Council and the Science and Technology Facilities Council

Via José Gonçalves
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Rescooped by Scott Torquato from PhysicsLearn
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Making Audio Speakers from Household Materials | Carolina.com

Making Audio Speakers from Household Materials | Carolina.com | Physics N'Stuff | Scoop.it

Via Dolores Gende
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Dolores Gende's curator insight, May 10, 2013 6:51 AM

Students will make speakers from ordinary household materials and, in the process, discover the science of how speakers create sound.