Physics
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The anatomy of an asteroid

The anatomy of an asteroid | Physics | Scoop.it
ESO's New Technology Telescope has been used to find the first evidence that asteroids can have a highly varied internal structure. By making measurements astronomers have found that different parts of the asteroid Itokawa have different densities. As well as revealing secrets about the asteroid's formation, ...

Via THE *OFFICIAL ANDREASCY*, John Purificati
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Room-temperature quantum dots emit single photons - nanotechweb.org

Room-temperature quantum dots emit single photons - nanotechweb.org | Physics | Scoop.it
III-nitride QDs might be ideal for on-chip communications in quantum information processors of the future
Mikko Hakala's insight:

Controlled gallium nitride quantum dots demonstrated to emit single photons at room temperature.

 

As next steps the team aims to measure operating speeds and whether current injection, instead of laser, could be used for operation.

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'Diamane': Diamond film possible without the pressure

'Diamane': Diamond film possible without the pressure | Physics | Scoop.it
(Phys.org) —Perfect sheets of diamond a few atoms thick appear to be possible even without the big squeeze that makes natural gems.
Mikko Hakala's insight:

Ab initio calculations of Gibbs free energy to predict the phase transition. Hydrogenation of the surfaces plays a role.

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Rescooped by Mikko Hakala from Nuclear Physics
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Can A Mega-Magnetic Field Protect Astronauts From Radiation?

Can A Mega-Magnetic Field Protect Astronauts From Radiation? | Physics | Scoop.it

A bunch of people really, really want to go to the Red Planet on the proposed one-way Mars One trip; more than 1,000 applicants are being considered in Round 2 selections.


Via Theo J. Mertzimekis
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Is Quantum Mechanics Just a Special Case of Classical Mechanics? - The Fun Is Real

Is Quantum Mechanics Just a Special Case of Classical Mechanics? - The Fun Is Real | Physics | Scoop.it
If you enjoyed my post from about three months ago on Hydrodynamic Quantum Analogs, or perhaps even if you didn’t, you will likely enjoy this new paper by Robert Brady and Ross Anderson at the University of Cambridge: “Why bouncing droplets are a pretty good model of quantum mechanics“. They … Continue reading →
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Rescooped by Mikko Hakala from Complexity & Systems
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eCommons@Cornell: Nonlinear dynamics and chaos: Lab demonstrations

eCommons@Cornell: Nonlinear dynamics and chaos: Lab demonstrations | Physics | Scoop.it
This video shows six laboratory demonstrations of chaos andnonlinear phenomena, intended for use in a first course on nonlineardynamics. Steven Strogatz explains the principles being illustrated andwhy they are important.

Via Bernard Ryefield
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Nobel laureate's gift a game-changer for physics at UCLA / UCLA Newsroom

Nobel laureate's gift a game-changer for physics at UCLA / UCLA Newsroom | Physics | Scoop.it
Nobel laureate's gift a game-changer for physics at UCLA / UCLA Newsroom
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Physicists create synthetic magnetic monopole predicted more than 80 years ago

Physicists create synthetic magnetic monopole predicted more than 80 years ago | Physics | Scoop.it
(Phys.org) —Nearly 85 years after pioneering theoretical physicist Paul Dirac predicted the possibility of their existence, an international collaboration led by Amherst College Physics Professor David S. Hall '91 and Aalto University (Finland) Academy Research Fellow Mikko Möttönen has created, ...
Mikko Hakala's insight:

Hall: "Were it not for the initial curiosity on the part of the students we would never have embarked on this project."

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Engineers teach old chemical new tricks to make cleaner fuels, fertilizers

Engineers teach old chemical new tricks to make cleaner fuels, fertilizers | Physics | Scoop.it
University researchers from two continents have engineered an efficient and environmentally friendly catalyst for the production of molecular hydrogen, a compound used extensively in modern industry to manufacture fertilizer and refine crude oil...
Mikko Hakala's insight:

"Researchers from Denmark and Stanford show how to produce industrial quantities of hydrogen without emitting carbon into the atmosphere"

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Business of the sciences: ROI for basic research is high, but risk is too large for any single company.

Business of the sciences: ROI for basic research is high, but risk is too large for any single company. | Physics | Scoop.it
Federal funds for basic research have recently slowed compared to prior trends, placing funding concerns on the minds of scientists. Specifically, long term state of funding is a source of concern ...
Mikko Hakala's insight:
The article makes this point: "Funding basic science not only generates knowledge and fosters innovation – it is an investment that makes serious money."
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Rescooped by Mikko Hakala from Science: resources for South African teachers
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Scientists crack crowdsource code

Scientists crack crowdsource code | Physics | Scoop.it

Wanted: Astronomers, neuroscientists, papyrologists. No experience required. Interested in the stars, but don't want to study science? Want to make a contribution to scientific knowledge without any understanding of maths? Whether it's astronomy or neuroscience, the quantity of data is growing exponentially and researchers are hard-pressed to keep up, so the number of internet-based citizen science projects is growing.


Via Andrew van Zyl
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Matter of Mystery: Antimatter Beam Could Help Solve Physics Puzzle

Matter of Mystery: Antimatter Beam Could Help Solve Physics Puzzle | Physics | Scoop.it
A new experiment that, for the first time, creates a beam of antihydrogen atoms, could help scientists understand why antimatter is so scarce is the universe.
Mikko Hakala's insight:

Toward better spectroscopy of antimatter.

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Urban Physics

Urban Physics | Physics | Scoop.it
Franz-Josef Ulm and a colleague were taking a break from a tough problem one afternoon when they spotted an aerial photograph of a city and suddenly had an epiphany. Instantly, they made a connection between the patterns of houses and streets and the underlying molecular structure of concrete. That serendipitous observation has since led to [...]
Mikko Hakala's insight:

"...a highly ordered crystal (New York) to a less-ordered glass (Chicago) to an amorphous liquid (Boston)."

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Quasi-particle swap between graphene layers

Quasi-particle swap between graphene layers | Physics | Scoop.it
Equations used to describe parallel worlds in particle physics can help study the behavior of particles in parallel graphene layers. Scientists have used a particle physics theory to describe the behavior of particle-like entities, referred to as excitons, in two layers of graphene, a one-carbon-atom-thick honeycomb crystal.
Mikko Hakala's insight:

High-energy particle physics theoretical approach to solid state phenomana.

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What is on the Other Side of a Black Hole?

What is on the Other Side of a Black Hole? | Physics | Scoop.it
Picture an entire star collapsed down into a gravitational singularity. An object with so much mass, compressed so tightly, that nothing, not even light itself can escape its grasp. It’s no surprise these objects have captured our imagination... and yet, I have a complaint. The name “black hole” seems to have created something of a…
Mikko Hakala's insight:

"So, if you had any plans to travel into a black hole, I urge you to reconsider..."

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9 Apps and Tools for Teaching Physics

9 Apps and Tools for Teaching Physics | Physics | Scoop.it
Physics is one of the most difficult subjects for students to learn and an incredibly difficult one for teachers to find quality apps for use in the classroom.

Via John Purificati
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How to Turn Windows Into Solar Panels: Video

How to Turn Windows Into Solar Panels: Video | Physics | Scoop.it
Kevin Arthur, CEO at Oxford Photovoltaics, discusses the company’s technology providing solar energy through windows. He speaks on Bloomberg Television's “The Pulse.” (Source: Bloomberg)
Mikko Hakala's insight:

Scaling up the technology developed at the university.

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Rescooped by Mikko Hakala from PhysicsLearn
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How Do You Measure the Magnetic Field? - Wired Science

How Do You Measure the Magnetic Field? - Wired Science | Physics | Scoop.it
Here are two methods you can use to measure a magnetic field.

Via Dolores Gende
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100 years of crystallography: Nature News & Comment

100 years of crystallography: Nature News & Comment | Physics | Scoop.it

"Since modern crystallography dawned with X-ray diffraction experiments on crystals by Max von Laue in 1912 and William and Lawrence Bragg (a father-and-son team) in 1913, and was recognized by Nobel prizes in physics for von Laue in 1914 and the Braggs in 1915, the discipline has informed almost every branch of the natural sciences. This Nature special issue explores the highlights, evolution and future of the field."

 

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Observation of Dirac monopoles in a synthetic magnetic field

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Nature 505, 657–660 (30 January 2014) doi:10.1038/nature12954

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Scitation: The Dayside: Without practical importance or intellectual glamor

Scitation: The Dayside: Without practical importance or intellectual glamor | Physics | Scoop.it
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A great piece about the return from basic research.

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Quantum mechanics: a polarizing topic | Galileo's Pendulum

Quantum mechanics: a polarizing topic | Galileo's Pendulum | Physics | Scoop.it
Culturally, we have an odd relationship with quantum mechanics. Writers of popular accounts often like to emphasize the strangeness of quantum physics, talking about Schrödinger's cat, entanglement, and the like.
Mikko Hakala's insight:

This is a nice introduction to basic concepts.

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Future solar cells may be made of wood

Future solar cells may be made of wood | Physics | Scoop.it
(Phys.org) —A new kind of paper that is made of wood fibers yet is 96% transparent could be a revolutionary material for next-generation solar cells.
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Japan researchers use cosmic rays to see nuclear fuel

Japan researchers use cosmic rays to see nuclear fuel | Physics | Scoop.it
Japanese researchers said Thursday they had succeeded in using cosmic rays to find nuclear fuel inside a reactor, a technology that might be helpful in the complicated decommissioning at Fukushima.
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