Post List

Physics posts

(Modify Search »)

  • September 17, 2014
  • 08:05 AM
  • 9 views

Should I Stay Or Should I Go

by Mark Lasbury in As Many Exceptions As Rules

Bacteria can swarm to conquer new territory or settle into structured biofilms, not unlike tribes that are nomadic versus those that build cities. New research indicates has shed light on the mechanics of swarming and biofilm production, including the function of extracellular DNA and secreted polysaccharides. Both biofilms and swarming depend on quorum sensing, and several new papers have identified chemicals that can interrupt quorum sensing in pathogenic bacteria and therefore prevent disease........ Read more »

Gloag ES, Turnbull L, Huang A, Vallotton P, Wang H, Nolan LM, Mililli L, Hunt C, Lu J, Osvath SR.... (2013) Self-organization of bacterial biofilms is facilitated by extracellular DNA. Proceedings of the National Academy of Sciences of the United States of America, 110(28), 11541-6. PMID: 23798445  

Alteri CJ, Himpsl SD, Pickens SR, Lindner JR, Zora JS, Miller JE, Arno PD, Straight SW, & Mobley HL. (2013) Multicellular bacteria deploy the type VI secretion system to preemptively strike neighboring cells. PLoS pathogens, 9(9). PMID: 24039579  

  • September 16, 2014
  • 07:11 PM
  • 29 views

Breaking battery convention: new study indicates fast charging not necessarily detrimental to cycle lifetimes

by Jonathan Trinastic in Goodnight Earth

New battery research examining the structure of LiFePO4 electrodes during charging indicate that fast charging rates are possible due to a relationship between rate and active intercalation sites.... Read more »

  • September 13, 2014
  • 10:14 AM
  • 68 views

Solving the puzzle of Greenland melting 20,000 years ago

by Jonathan Trinastic in Goodnight Earth

New computer modeling and experimental ice core data shed light on the mystery of Greenland melting 20,000 years ago. This information will be helpful in refining current climate models.... Read more »

Buizert C, Gkinis V, Severinghaus JP, He F, Lecavalier BS, Kindler P, Leuenberger M, Carlson AE, Vinther B, Masson-Delmotte V.... (2014) Greenland temperature response to climate forcing during the last deglaciation. Science (New York, N.Y.), 345(6201), 1177-80. PMID: 25190795  

  • September 12, 2014
  • 05:14 AM
  • 77 views

An efficient magnetic field can exist for light particles

by Usman Paracha in SayPeople

Main Points:

Scientists have opened a new window in science by finding that an effective magnetic field can exist for light.
Published in:

Nature Photonics
Study Further:

Magnetic field refers to the line of forces that are present around the permanent magnet or a moving charged particle. This field can change the path of charged particles such as electrons. Usually, magnetic field has no effect on neutral particles such as photons, which are present in light. However, the present stu........ Read more »

Tzuang, L., Fang, K., Nussenzveig, P., Fan, S., & Lipson, M. (2014) Non-reciprocal phase shift induced by an effective magnetic flux for light. Nature Photonics, 8(9), 701-705. DOI: 10.1038/nphoton.2014.177  

  • September 10, 2014
  • 05:10 AM
  • 60 views

The question of the mass gap

by Marco Frasca in The Gauge Connection

Some years ago I proposed a set of solutions to the classical Yang-Mills equations displaying a massive behavior. For a massless theory this is somewhat unexpected. After a criticism by Terry Tao I had to admit that, for a generic gauge, such solutions are just asymptotic ones assuming the coupling runs to infinity (see here […]... Read more »

Marco Frasca. (2009) Mapping a Massless Scalar Field Theory on a Yang-Mills Theory: Classical Case. Mod. Phys. Lett. A 24, 2425-2432 (2009). arXiv: 0903.2357v4

Marco Frasca. (2014) Exact solutions for classical Yang-Mills fields. arXiv. arXiv: 1409.2351v1

  • September 5, 2014
  • 06:31 PM
  • 94 views

Higgs what?

by Marco Frasca in The Gauge Connection

In these days it has been announced the new version of Review of Particle Physics by the Particle Data Group (PDG). This is the bread and butter of any particle physicist and contains all the relevant data about this area of research. It is quite common for us to search the on-line version or using […]... Read more »

Marco Frasca. (2013) Scalar field theory in the strong self-interaction limit. Eur. Phys. J. C (2014) 74:2929. arXiv: 1306.6530v5

  • September 5, 2014
  • 11:00 AM
  • 81 views

The Friday Five for 9/5/14

by Bill Sullivan in The 'Scope

A look at some of the neatest things science did this week, including solving the mystery of the "wandering stones", what coffee and alcohol do to your brain, and Lego economics!... Read more »

  • September 5, 2014
  • 10:58 AM
  • 85 views

Corals Engineer Their Own Currents

by Elizabeth Preston in Inkfish

There are few more monastic lives in the animal kingdom than a coral’s. In adulthood it gives up swimming to settle on the ocean floor, surround its spineless body with clones, and become a rock. Mouth facing the ocean, it waits passively for whatever drifts by—or maybe not so passively. Taking a closer look at […]The post Corals Engineer Their Own Currents appeared first on Inkfish.... Read more »

Orr H. Shapiro, Vicente I. Fernandez, Melissa Garren, Jeffrey S. Guasto, François P. Debaillon-Vesque, Esti Kramarsky-Winter, Assaf Vardi, & Roman Stocker. (2014) Vortical ciliary flows actively enhance mass transport in reef corals. PNAS. info:/10.1073/pnas.1323094111

  • September 4, 2014
  • 05:46 PM
  • 95 views

Hole no more: new perovskite solar cell design removes hole conducting layer to improve stability and reduce costs

by Jonathan Trinastic in Goodnight Earth

New research in Science shows a clever way to use a TiO2-ZrO2 junction to replace the expensive hole conducting layer in perovskite solar cells and promote charge separation.... Read more »

Mei, A., Li, X., Liu, L., Ku, Z., Liu, T., Rong, Y., Xu, M., Hu, M., Chen, J., Yang, Y.... (2014) A hole-conductor-free, fully printable mesoscopic perovskite solar cell with high stability. Science, 345(6194), 295-298. DOI: 10.1126/science.1254763  

  • September 1, 2014
  • 11:15 PM
  • 97 views

Falsifiability and Gandy’s variant of the Church-Turing thesis

by Artem Kaznatcheev in Evolutionary Games Group

In 1936, two years after Karl Popper published the first German version of The Logic of Scientific Discovery and introduced falsifiability; Alonzo Church, Alan Turing, and Emil Post each published independent papers on the Entscheidungsproblem and introducing the lambda calculus, Turing machines, and Post-Turing machines as mathematical models of computation. The years after saw many […]... Read more »

Gandy, R. (1980) Church's thesis and principles for mechanisms. Studies in Logic and the Foundations of Mathematics, 123-148. DOI: 10.1016/S0049-237X(08)71257-6  

  • September 1, 2014
  • 03:12 PM
  • 91 views

The hope behind climate change: adaptation strategies for coastal regions

by Jonathan Trinastic in Goodnight Earth

Hopeful news on Labor Day! A commentary discusses how IPCC reports have become more optimistic and describes adaptation pathways being used by coastal regions to prepare for climate change.... Read more »

Brown, S., Nicholls, R., Hanson, S., Brundrit, G., Dearing, J., Dickson, M., Gallop, S., Gao, S., Haigh, I., Hinkel, J.... (2014) Shifting perspectives on coastal impacts and adaptation. Nature Climate Change, 4(9), 752-755. DOI: 10.1038/nclimate2344  

  • August 31, 2014
  • 06:36 PM
  • 92 views

Whitman Was Not a Neuroscientist

by The Neurocritic in The Neurocritic

Do I contradict myself?Very well then I contradict myself,(I am large, I contain multitudes.)-Walt Whitman, "Song of Myself" (from Leaves of Grass)Science is the search for objective truth based on physical laws of the universe. Scientific theories try to explain the consistent and predictable behavior of natural systems. They are generally reductionist, meaning that complex systems are reduced to simpler and more fundamental elements. The principles of physics, for instance, are expressed in th........ Read more »

  • August 29, 2014
  • 09:25 AM
  • 119 views

The Friday Five for 8/29/14

by Bill Sullivan in The 'Scope

5 of the hottest science news stories this week include a lab-grown thymus, big Alzheimer’s news, and how to make the perfect pizza.... Read more »

  • August 27, 2014
  • 05:39 PM
  • 126 views

Climate change research roundup: hiding heat in the Atlantic and the Arctic carbon cycle

by Jonathan Trinastic in Goodnight Earth

A quick roundup of new climate change research in Science: the Atlantic Ocean may be hiding the missing heat to explain the global warming hiatus, and photochemical processes in the Arctic are releasing more CO2 than previously thought.... Read more »

  • August 26, 2014
  • 01:27 PM
  • 135 views

The Holographic Universe [we might Live in!]

by Gabriel in Lunatic Laboratories

Are you feeling a little… flat? Well that might be because you are only in 2 dimensions. I know what you’re thinking, insane! Well first check the name of the business and second, check out the science. In fact, it may seem like a joke, but the math suggests that it could very well be true and with it could come a deeper understanding of the universe. Testing this hypothesis (which was first made in the late 90’s) has been harder to do than you might think, but that has now changed. We are........ Read more »

  • August 26, 2014
  • 12:09 PM
  • 91 views

For These Bats, the Best Falsetto Wins Over the Ladies

by Elizabeth Preston in Inkfish

A bat’s voice is its livelihood. Chirping and squeaking at just the right frequencies lets it echolocate food and stay alive. Sounding pretty isn’t the point—except when it is. For the first time, scientists think they’ve found a bat species in which females choose mates based on their voices. Even if a lower-frequency squeak might […]The post For These Bats, the Best Falsetto Wins Over the Ladies appeared first on Inkfish.... Read more »

  • August 20, 2014
  • 07:03 PM
  • 113 views

Anthropogenic climate change and glacial loss explained by a single number: 25!

by Jonathan Trinastic in Goodnight Earth

New analyses using climate circulation models and glacial dynamics indicates that anthropogenic forcing has caused 25% of glacial loss over the past 150 years and 69% over the past two decades.... Read more »

  • August 20, 2014
  • 03:41 PM
  • 112 views

Cool Burning Flames Could Lead to Better Engines

by dailyfusion in The Daily Fusion

A team of international researchers has discovered a new type of cool burning flames that could lead to greener, more efficient combustion engines.... Read more »

Dietrich, D., Nayagam, V., Hicks, M., Ferkul, P., Dryer, F., Farouk, T., Shaw, B., Suh, H., Choi, M., Liu, Y.... (2014) Droplet Combustion Experiments Aboard the International Space Station. Microgravity Science and Technology. DOI: 10.1007/s12217-014-9372-2  

  • August 20, 2014
  • 06:18 AM
  • 98 views

Topological Insulators Could Power Memory Devices

by dailyfusion in The Daily Fusion

A new phase of matter known as topological insulators, until recently known only for esoteric quantum-mechanical properties, might have a practical use in controlling magnetic memory and logic devices. ... Read more »

Mellnik, A., Lee, J., Richardella, A., Grab, J., Mintun, P., Fischer, M., Vaezi, A., Manchon, A., Kim, E., Samarth, N.... (2014) Spin-transfer torque generated by a topological insulator. Nature, 511(7510), 449-451. DOI: 10.1038/nature13534  

  • August 14, 2014
  • 08:27 PM
  • 163 views

Few but strong: dense tornado clusters on the rise in the United States

by Jonathan Trinastic in Goodnight Earth

Analysis of tornado frequency data over the last half-century shows that tornadoes are occurring on fewer days but with greater density and severity, indicating that climate change may be changing the local dynamics at play.... Read more »

JB Elsner, SC Elsner, TH Jagger. (2014) The increasing efficiency of tornado days in the United States. Climate Dynamics. info:/

join us!

Do you write about peer-reviewed research in your blog? Use ResearchBlogging.org to make it easy for your readers — and others from around the world — to find your serious posts about academic research.

If you don't have a blog, you can still use our site to learn about fascinating developments in cutting-edge research from around the world.

Register Now

Research Blogging is powered by SMG Technology.

To learn more, visit seedmediagroup.com.