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Physics as we know it.
Everything from quantum through computational to astro - physics that is!
Curated by Gary Bamford
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New experiments set to detect gravitational waves

New experiments set to detect gravitational waves | Physics as we know it. | Scoop.it
(Phys.org) —Over the next five years, Mansi Kasliwal writes in an astrophysics perspective in the journal Science, researchers will begin setting up experiments designed to detect gravitational waves.
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Quantifying Collective Attention from Tweet Stream

Quantifying Collective Attention from Tweet Stream | Physics as we know it. | Scoop.it

We propose a simple method for detecting and measuring the collective attention evoked by various types of events. This method exploits the fact that tweeting activity exhibits a burst-like increase and an irregular oscillation when a particular real-world event occurs; otherwise, it follows regular circadian rhythms.(...)we demonstrate the effectiveness of this method using a large dataset that contained approximately 490 million Japanese tweets by over 400,000 users, in which we identified 60 cases of collective attentions, including one related to the Tohoku-oki earthquake.

 

 

Sasahara K, Hirata Y, Toyoda M, Kitsuregawa M, Aihara K (2013) Quantifying Collective Attention from Tweet Stream. PLoS ONE 8(4): e61823. http://dx.doi.org/10.1371/journal.pone.0061823


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Gary Bamford's insight:

The science of Twitter :O

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luiy's curator insight, May 3, 2013 2:59 AM

Online social media are increasingly facilitating our social interactions, thereby making available a massive “digital fossil” of human behavior. Discovering and quantifying distinct patterns using these data is important for studying social behavior, although the rapid time-variant nature and large volumes of these data make this task difficult and challenging. In this study, we focused on the emergence of “collective attention” on Twitter, a popular social networking service. We propose a simple method for detecting and measuring the collective attention evoked by various types of events. This method exploits the fact that tweeting activity exhibits a burst-like increase and an irregular oscillation when a particular real-world event occurs; otherwise, it follows regular circadian rhythms. The difference between regular and irregular states in the tweet stream was measured using the Jensen-Shannon divergence, which corresponds to the intensity of collective attention. We then associated irregular incidents with their corresponding events that attracted the attention and elicited responses from large numbers of people, based on the popularity and the enhancement of key terms in posted messages or “tweets.” Next, we demonstrate the effectiveness of this method using a large dataset that contained approximately 490 million Japanese tweets by over 400,000 users, in which we identified 60 cases of collective attentions, including one related to the Tohoku-oki earthquake. “Retweet” networks were also investigated to understand collective attention in terms of social interactions. This simple method provides a retrospective summary of collective attention, thereby contributing to the fundamental understanding of social behavior in the digital era.

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Quantum physics could boost III-V solar cell efficiency - Compound Semiconductor - Compound Semiconductor

Quantum physics could boost III-V solar cell efficiency - Compound Semiconductor - Compound Semiconductor | Physics as we know it. | Scoop.it
Quantum physics could boost III-V solar cell efficiency - Compound Semiconductor Compound Semiconductor Tomic and his team will use methods of computational physics, which combine the laws of quantum mechanics and advanced numerical algorithms,...
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Stephen Hawking’s advice for twenty-first century grads: Embrace complexity

 A few years ago, Hawking was asked what he thought of the common opinion that the twentieth century was that of biology and the twenty-first century would be that of physics. Hawking replied that in his opinion the twenty-first century would be the “century of complexity”. That remark probably holds more useful advice for contemporary students than they realize since it points to at least two skills which are going to be essential for new college grads in the age of complexity: statistics and data visualization.


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Harshal Hayatnagarkar's curator insight, April 25, 2013 11:17 AM
Exactly, Sir !
Dmitry Alexeev's curator insight, April 29, 2013 4:15 AM

Complexity is us)

Murray McKercher's curator insight, April 30, 2013 4:39 AM

"century of complexity" sounds like we should therefore concentrate on simplicity in all things mobile...

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'Quantum internet': Towards realization of solid-state quantum network

'Quantum internet': Towards realization of solid-state quantum network | Physics as we know it. | Scoop.it
(Phys.org) —Researchers at TU Delft in the Netherlands have managed to bring two electrons, three meters from each other, into a quantum- entangled state.
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Higgs data could spell trouble for leading Big Bang theory

Higgs data could spell trouble for leading Big Bang theory | Physics as we know it. | Scoop.it
Universe's latest baby picture combines with LHC findings to raise new questions about cosmic 'inflation'.
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Model Suggests Link between Intelligence and Entropy

Model Suggests Link between Intelligence and Entropy | Physics as we know it. | Scoop.it
Dynamical systems that maximize their future possibilities behave in surprisingly “intelligent” ways.
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Scientists quietly announce a potentially huge discovery in physics - San Francisco Chronicle (blog)

Scientists quietly announce a potentially huge discovery in physics - San Francisco Chronicle (blog) | Physics as we know it. | Scoop.it
Scientists quietly announce a potentially huge discovery in physics San Francisco Chronicle (blog) Lost amid the tragedy of Monday's explosions in Boston was a fascinating piece of physics news: an unexpected glimpse of what is very likely dark...
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Characterizing scientific production and consumption in Physics

Characterizing scientific production and consumption in Physics | Physics as we know it. | Scoop.it

We analyze the entire publication database of the American Physical Society generating longitudinal (50 years) citation networks geolocalized at the level of single urban areas. We define the knowledge diffusion proxy, and scientific production ranking algorithms to capture the spatio-temporal dynamics of Physics knowledge worldwide. By using the knowledge diffusion proxy we identify the key cities in the production and consumption of knowledge in Physics as a function of time. The results from the scientific production ranking algorithm allow us to characterize the top cities for scholarly research in Physics. Although we focus on a single dataset concerning a specific field, the methodology presented here opens the path to comparative studies of the dynamics of knowledge across disciplines and research areas.

 

Characterizing scientific production and consumption in Physics

Qian Zhang, Nicola Perra, Bruno Gonçalves, Fabio Ciulla & Alessandro Vespignani

Scientific Reports 3, Article number: 1640 http://dx.doi.org/10.1038/srep01640


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Inflation, Dark Energy, and the Physics of Spacetime

Inflation, Dark Energy, and the Physics of Spacetime | Physics as we know it. | Scoop.it
“Orbiting Earth in spaceship, I saw how beautiful our planet is. People, let us preserve and increase beauty, not destroy it!” -Yuri Gagarin Fifty-two years ago today, the first human being left Earth, and we began our journey into outer space.
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The Geometry of Particle Physics: Garrett Lisi at TEDxMaui 2013

About the Presenter: After getting his Ph.D. in physics from UC San Diego, Garrett moved to Maui, seeking an optimum balance between surfing and his theoreti...
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Information and Computation

In this chapter, concepts related to information and computation are reviewed in the context of human computation. A brief introduction to information theory and different types of computation is given. Two examples of human computation systems, online social networks and Wikipedia, are used to illustrate how these can be described and compared in terms of information and computation.

 

Information and Computation

Carlos Gershenson

http://arxiv.org/abs/1304.1428


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Hubble telescope breaks record for furthest supernova

Hubble telescope breaks record for furthest supernova | Physics as we know it. | Scoop.it
(Phys.org) —The supernova, designated SN UDS10Wil, belongs to a special class of exploding stars known as Type Ia supernovae.
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Miracle graphene will transform solar energy and 'power entire buildings', claim Manchester scientists | Mancunian Matters

Miracle graphene will transform solar energy and 'power entire buildings', claim Manchester scientists | Mancunian Matters | Physics as we know it. | Scoop.it
By Danielle Wainwright
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Download A Modern Introduction to Quantum Field Theory (Oxford ...

'The real strength of this book lies in the linking particle physics with astrophysics, Physics - Academic, Professional, & General - Oxford University Press . astrophysics and cosmology, and theoretical, computational, and ...
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Video portrait of the Sun

Video portrait of the Sun | Physics as we know it. | Scoop.it
In complete defiance of its parents, NASA's Solar Dynamics Observatory has stared directly at the Sun for the past three years. He (Stunning!
Gary Bamford's insight:

Now - is that cool or what!

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Einstein's gravity theory passes toughest test yet: Bizarre binary star system pushes study of relativity to new limits

Einstein's gravity theory passes toughest test yet: Bizarre binary star system pushes study of relativity to new limits | Physics as we know it. | Scoop.it
(Phys.org) —A strange stellar pair nearly 7,000 light-years from Earth has provided physicists with a unique cosmic laboratory for studying the nature of gravity.
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A Big Step Toward a Silicon Quantum Computer

A Big Step Toward a Silicon Quantum Computer | Physics as we know it. | Scoop.it

Quantum computers could more easily become a reality if they incorporated the silicon semiconductor processing used by the modern electronics industry. Physicists in Australia have recently taken a new step toward that vision by reading and writing the nuclear spin state of a single phosphorus atom implanted in silicon.

In a breakthrough reported in the 18 April edition of the journal Nature, physicists have finally achieved an idea first proposed in 1998 by Bruce Kane, a physicist at theUniversity of Maryland, in College Park. Such success could lead to quantum computers based on the same silicon-processing technology used for computer chips.


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New 'Entanglement' Study Confirms Phenomenon Einstein Called 'Spooky'

New 'Entanglement' Study Confirms Phenomenon Einstein Called 'Spooky' | Physics as we know it. | Scoop.it
By: Tia Ghose, LiveScience Staff Writer Published: 04/22/2013 07:49 AM EDT on LiveScience The weird way entangled particles stay connected even when separated by large distances — a phenomenon Albert Einstein called "spooky" — has been confirmed...
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Atom Smashers Find Something Not So Charm-ing

Atom Smashers Find Something Not So Charm-ing | Physics as we know it. | Scoop.it
A possible new exotic particle is just one tantalizing hint of new physics at the world's atom smashers.
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Scrunch time: The peculiar physics of crumpled paper - physics-math - 05 January 2012 - New Scientist

Scrunch time: The peculiar physics of crumpled paper - physics-math - 05 January 2012 - New Scientist | Physics as we know it. | Scoop.it
When you crumple up your gift-wrapping paper this year, you'll create a shape so complex that it has defeated the most sophisticated computers (Science! Science everywhere!
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Mysteriously Shrinking Proton Continues to Puzzle Physicists - LiveScience.com

Mysteriously Shrinking Proton Continues to Puzzle Physicists - LiveScience.com | Physics as we know it. | Scoop.it
Mysteriously Shrinking Proton Continues to Puzzle Physicists
LiveScience.com
DENVER — The size of a proton, long thought to be well-understood, may remain a mystery for a while longer, according to physicists.
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The Space Station Could Be The Next Frontier Of Quantum Communications - Forbes

The Space Station Could Be The Next Frontier Of Quantum Communications - Forbes | Physics as we know it. | Scoop.it
ExtremeTech
The Space Station Could Be The Next Frontier Of Quantum Communications
Forbes
The key basis of physics underlying quantum communications is entanglement. Entangled particles are connected in a way that pretty much defies common sense.
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Computer scientists develop video game that teaches how to program in Java

Computer scientists develop video game that teaches how to program in Java | Physics as we know it. | Scoop.it
Computer scientists have developed an immersive, first-person player video game designed to teach students in elementary to high school how to program in Java, one of the most common programming languages in use today.
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Graphene foams: Cozy and conductive scaffolds for neural stem cells

Graphene foams: Cozy and conductive scaffolds for neural stem cells | Physics as we know it. | Scoop.it
(Phys.org) —Graphene foams have been around now for a couple years. Their widespread application in everything from electronics and energy storage to substitutes for helium in balloons is still greatly anticipated.
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