Post List

Physics posts

(Modify Search »)

  • August 21, 2015
  • 12:49 PM
  • 105 views

To Avoid Mosquitoes, Stop Breathing and Be Invisible

by Elizabeth Preston in Inkfish



Hungry mosquitoes use an arsenal of sensory tools to hunt you down. They sniff out the carbon dioxide you exhale; they home in on your heat signature. But a previously under-appreciated tool in the mosquito's kit is the same one you use just before slapping at it in horror: vision.

At Caltech, Floris van Breugel put mosquitoes in a wind tunnel to tease apart how they find their meals. He used Aedes aegypti, a tropical species that spreads yellow fever and other diseases. The insects wer........ Read more »

van Breugel, F., Riffell, J., Fairhall, A., & Dickinson, M. (2015) Mosquitoes Use Vision to Associate Odor Plumes with Thermal Targets. Current Biology, 25(16), 2123-2129. DOI: 10.1016/j.cub.2015.06.046  

  • August 20, 2015
  • 06:01 PM
  • 217 views

The story of a cave and climate change

by Jonathan Trinastic in Goodnight Earth

Old writings spanning the last four hundred years have been discovered in China that detail eras of drought. Using these as a starting point, researchers have connected the time periods with changes in rainfall to predict future droughts in the region.... Read more »

Tan, L., Cai, Y., An, Z., Cheng, H., Shen, C., Breitenbach, S., Gao, Y., Edwards, R., Zhang, H., & Du, Y. (2015) A Chinese cave links climate change, social impacts, and human adaptation over the last 500 years. Scientific Reports, 12284. DOI: 10.1038/srep12284  

  • August 20, 2015
  • 02:09 PM
  • 86 views

Falling with Style: Controlled Gliding in Spiders

by Melissa Chernick in Science Storiented

Sometimes I read a paper because the methods catch my eye. I can just imagine some scientists sitting around a table with a beer and saying, “I wonder what would happen if we just dropped a bunch of spiders from the tops of trees.” An article published online yesterday did just that.Barro Colorado Island is a man-made island is located in Gatun Lake, created by filling of the Panama Canal. It is covered in tropical rainforests, and its inhabitants have been studied extensively. It would be a........ Read more »

Stephen P. Yanoviak, Yonatan Munk, & Robert Dudley. (2015) Arachnid aloft: directed aerial descent in neotropical canopy spiders. J. R. Soc. Interface. info:/10.1098/rsif.2015.0534

  • August 12, 2015
  • 12:54 PM
  • 135 views

Cognitive decision making as the collapse of a quantum superstate


by Dr. Jekyll in Lunatic Laboratories

Decision making in an enormous range of tasks involves the accumulation of evidence in support of different hypotheses. One of the enduring models of evidence accumulation is the Markov random walk (MRW) theory, which assigns a probability to each hypothesis. In an MRW model of decision making, when deciding between two hypotheses, the cumulative evidence for and against each hypothesis reaches different levels at different times, moving particle-like from state to state and only occupying a sin........ Read more »

  • August 11, 2015
  • 12:12 PM
  • 104 views

How Bees Carry Their Baggage

by Elizabeth Preston in Inkfish



Think your airline's bag fees are burdensome? Try flying after swallowing part of your luggage and strapping the rest to your legs. That's how bees do it. And depending on how a bumblebee loads herself up with nectar and pollen, her flight back to the hive might be less of a beeline than usual.

Like honeybees, bumblebees gather both nectar and pollen, bringing them back to the hive for food. They collect nectar simply by drinking it. After being slurped up a bee's long tongue, nectar is s........ Read more »

  • July 21, 2015
  • 03:43 PM
  • 164 views

Drawing a line between quantum and classical world

by Dr. Jekyll in Lunatic Laboratories

Quantum theory is one of the great achievements of 20th century science, yet physicists have struggled to find a clear boundary between our everyday world and what Albert Einstein called the “spooky” features of the quantum world, including cats that could be both alive and dead, and photons that can communicate with each other across space instantaneously.... Read more »

  • July 20, 2015
  • 12:48 PM
  • 175 views

Research investigates whether solar events could trigger birth defects on Earth

by Dr. Jekyll in Lunatic Laboratories

Studies find airplane crews at high altitude are exposed to potentially harmful levels of radiation from cosmic rays. But could these cosmic rays pose hazards even at sea level? In recent years, research has suggested congenital birth defects down on Earth’s surface could be caused by these “solar particle events” — spikes in cosmic rays from the sun that touch off the northern lights and sometimes hamper communications or the electric power grid.... Read more »

  • July 19, 2015
  • 12:44 PM
  • 173 views

Dead galaxies in Coma Cluster may be packed with dark matter

by Dr. Jekyll in Lunatic Laboratories

Galaxies in a cluster roughly 300 million light years from Earth could contain as much as 100 times more dark matter than visible matter, according to an Australian study. The research, published today, used powerful computer simulations to study galaxies that have fallen into the Coma Cluster, one of the largest structures in the Universe in which thousands of galaxies are bound together by gravity.... Read more »

Cameron Yozin et al. (2015) The quenching and survival of ultra-diffuse galaxies in the Coma cluster. Monthly Notices of the Royal Astronomical Society. info:/10.1093/mnras/stv1073

  • July 18, 2015
  • 12:43 PM
  • 191 views

Study finds metal foams capable of shielding X-rays, gamma rays, neutron radiation

by Dr. Jekyll in Lunatic Laboratories

Research from North Carolina State University shows that lightweight composite metal foams are effective at blocking X-rays, gamma rays and neutron radiation, and are capable of absorbing the energy of high impact collisions. The finding means the metal foams hold promise for use in nuclear safety, space exploration and medical technology applications.... Read more »

  • July 16, 2015
  • 06:24 PM
  • 184 views

Hydraulic fracturing and hospitalization: a tentative link

by Jonathan Trinastic in Goodnight Earth

There is little hard data bout how fracking affects health outcomes, but a new study provides a first glimpse at a correlation between increased well-drilling and inpatient rates. Read more here!... Read more »

Jemielita, T., Gerton, G., Neidell, M., Chillrud, S., Yan, B., Stute, M., Howarth, M., Saberi, P., Fausti, N., Penning, T.... (2015) Unconventional Gas and Oil Drilling Is Associated with Increased Hospital Utilization Rates. PLOS ONE, 10(7). DOI: 10.1371/journal.pone.0131093  

  • July 15, 2015
  • 05:42 PM
  • 152 views

New solar energy storage works at night

by Jonathan Trinastic in Goodnight Earth

It is still an open research problem to store energy generated from solar cells, but a new, all-vanadium electrochemical cell made at UT Arlington may be a solution.... Read more »

  • July 15, 2015
  • 12:22 PM
  • 163 views

What's a Colorblind Person's Favorite Color? Yellow

by Elizabeth Preston in Inkfish



As much as you think your tastes are unique, psychologists say they can guess your favorite color. It's likely to be blue. And it's especially unlikely to be yellow—unless you're colorblind. Men with red-green colorblindness have preferences that are essentially opposite from everyone else's. The finding could help scientists understand why humans like what they like, and how colorblind people see the world differently.

Some researchers have claimed that the human love of blue is universa........ Read more »

Álvaro, L., Moreira, H., Lillo, J., & Franklin, A. (2015) Color preference in red–green dichromats. Proceedings of the National Academy of Sciences, 201502104. DOI: 10.1073/pnas.1502104112  

  • July 2, 2015
  • 12:57 PM
  • 218 views

Freezing single atoms to absolute zero with microwaves brings quantum technology closer

by Dr. Jekyll in Lunatic Laboratories

Physicists at the University of Sussex have found a way of using everyday technology found in kitchen microwaves and mobile telephones to bring quantum physics closer to helping solve enormous scientific problems that the most powerful of today’s supercomputers cannot even begin to embark upon.... Read more »

Weidt, S., Randall, J., Webster, S., Standing, E., Rodriguez, A., Webb, A., Lekitsch, B., & Hensinger, W. (2015) Ground-State Cooling of a Trapped Ion Using Long-Wavelength Radiation. Physical Review Letters, 115(1). DOI: 10.1103/PhysRevLett.115.013002  

  • June 30, 2015
  • 11:14 PM
  • 187 views

Surface matters: using earth-abundant materials to split water for energy storage

by Jonathan Trinastic in Goodnight Earth

Scientists have developed a new way to grow hematite as an electrode in solar water-splitting devices to greatly improve efficiency!... Read more »

Jang, J., Du, C., Ye, Y., Lin, Y., Yao, X., Thorne, J., Liu, E., McMahon, G., Zhu, J., Javey, A.... (2015) Enabling unassisted solar water splitting by iron oxide and silicon. Nature Communications, 7447. DOI: 10.1038/ncomms8447  

  • June 30, 2015
  • 06:06 AM
  • 208 views

Newly Found Galaxies Hold Clues About Universe Creation

by Elisabeth Buhl Thubron in United Academics

With gravitational lensing, researchers have located population III stars in far galaxies.... Read more »

Rydberg, C., Zackrisson, E., Zitrin, A., Guaita, L., Melinder, J., Asadi, S., Gonzalez, J., Östlin, G., & Ström, T. (2015) A SEARCH FOR POPULATION III GALAXIES IN CLASH. I. SINGLY IMAGED CANDIDATES AT HIGH REDSHIFT. The Astrophysical Journal, 804(1), 13. DOI: 10.1088/0004-637X/804/1/13  

  • June 29, 2015
  • 07:55 PM
  • 174 views

You may already be beating cancer

by Angela Reisetter in Steeped in Science

A look at living with disease close at hand, using a couple different papers. Living with Risk.... Read more »

  • June 24, 2015
  • 05:51 PM
  • 176 views

The benefit of order: new organic solar cell structure improves charge separation

by Jonathan Trinastic in Goodnight Earth

Organic solar cells suffer from fast electron-hole recombination, limiting efficiency, but scientists have found a cool new structure to prevent such limitations!... Read more »

Huber, R., Ferreira, A., Thompson, R., Kilbride, D., Knutson, N., Devi, L., Toso, D., Challa, J., Zhou, Z., Rubin, Y.... (2015) Long-lived photoinduced polaron formation in conjugated polyelectrolyte-fullerene assemblies. Science, 348(6241), 1340-1343. DOI: 10.1126/science.aaa6850  

  • June 24, 2015
  • 01:14 PM
  • 188 views

What your clothes may say about you

by Dr. Jekyll in Lunatic Laboratories

Moving closer to the possibility of “materials that compute” and wearing your computer on your sleeve, researchers at the University of Pittsburgh Swanson School of Engineering have designed a responsive hybrid material that is fueled by an oscillatory chemical reaction and can perform computations based on changes in the environment or movement, and potentially even respond to human vital signs. The material system is sufficiently small and flexible that it could ultimately be integrated in........ Read more »

  • June 23, 2015
  • 12:43 PM
  • 234 views

The New Way to Track Animals Is Tagless

by Elizabeth Preston in Inkfish



There's good news for scientists who study animals that are too small to carry a GPS monitor, or that spit ID tags back out through their arms. A setup using an off-the-shelf camera can precisely capture an animal's path in three dimensions—without anyone touching the animal.

Emmanuel de Margerie, who studies animal behavior at the University of Rennes 1 in France, says there are several reasons to seek new animal-tracking technologies. To put a GPS or other kind of tag on an animal, yo........ Read more »

de Margerie E, Simonneau M, Caudal JP, Houdelier C, & Lumineau S. (2015) 3D tracking of animals in the field, using rotational stereo videography. The Journal of experimental biology. PMID: 26056245  

  • June 14, 2015
  • 12:05 AM
  • 183 views

Pluto and Planetary Pinball

by Angela Reisetter in Steeped in Science

A description of the formation of the solar system and how we think it got to be how it is today, with a focus on Pluto and Kuiper belt.... Read more »

Thayne Currie, Carey M. Lisse, Marc J. Kuchner, Nikku Madhusudhan, Scott J. Kenyon, Christian Thalmann, Joseph Carson, & John H. Debes. (2015) Direct Imaging and Spectroscopy of a Young Extrasolar Kuiper Belt in the Nearest OB Association. Astrophysical Journal Letters. arXiv: 1505.06734v1

Konstantin Batygin, & Gregory Laughlin. (2015) Jupiter's Decisive Role in the Inner Solar System's Early Evolution. Proceedings of the National Academy of Sciences. arXiv: 1503.06945v2

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.