Post List

Physics posts

(Modify Search »)

  • May 24, 2016
  • 10:02 AM
  • 55 views

Should Biologists be Guided by Beauty?

by Jalees Rehman in The Next Regeneration

One key characteristic of a beautiful scientific theory is the simplicity of the underlying concepts. According to Weinberg, Einstein's theory of gravitation is described in fourteen equations whereas Newton's theory can be expressed in three. Despite the appearance of greater complexity in Einstein's theory, Weinberg finds it more beautiful than Newton's theory because the Einsteinian approach rests on one elegant central principle – the equivalence of gravitation and ........ Read more »

Dietrich, M., Ankeny, R., & Chen, P. (2014) Publication Trends in Model Organism Research. Genetics, 198(3), 787-794. DOI: 10.1534/genetics.114.169714  

Weinberg, Steven. (1992) Dreams of a Final Theory . Vintage Books. info:/

  • May 13, 2016
  • 09:21 AM
  • 151 views

Using Supercomputers to Probe the Early Universe

by EE Giorgi in CHIMERAS

Artist's depiction of the WMAP satellite gathering data to understand the Big Bang. Source: NASA.For decades physicists have been trying to decipher the first moments after the Big Bang. Using very large telescopes, for example, scientists scan the skies and look at how fast galaxies move. Satellites study the relic radiation left from the Big Bang, called the cosmic microwave background radiation. And finally, particle colliders, like the Large Hadron Collider at CERN, allow researchers to smas........ Read more »

  • April 27, 2016
  • 02:23 PM
  • 212 views

Rafting Ants Have Designated Stations

by Elizabeth Preston in Inkfish



Sometimes at the climax of a Star Trek episode, the captain would yell out "Battle stations!" and send the crew scurrying frantically through the corridors. It wasn't really clear what those battle stations were. Presumably, crew members headed to posts they'd been previously assigned, and this let the whole ship react to the crisis efficiently.

Certain ants respond to a crisis by binding their bodies together into floating rafts. And like the Star Trek crew, they seem to have designat........ Read more »

  • March 18, 2016
  • 11:34 AM
  • 371 views

Even Harmless Snakes Strike at Deadly Speed

by Elizabeth Preston in Inkfish



Just because a snake can't kill you doesn't mean it's slow on the draw. New research shows that harmless snakes strike just as quickly as venomous vipers do. The snakes hurl themselves at their targets so quickly, in fact, that a lesser animal would black out from the acceleration.

Vipers have long been the presumed titleholders for strike speed, explains David Penning, a graduate student in biology at the University of Louisiana at Lafayette. These snakes strike to kill, plunging their v... Read more »

  • March 12, 2016
  • 07:57 AM
  • 302 views

Science teachers could be obstacle to climate change education

by Jonathan Trinastic in Goodnight Earth

Climate change will continue to affect future generations, but are our children receiving accurate information about it? A new survey suggests not - here's a look and why and some possible solutions... Read more »

Plutzer, E., McCaffrey, M., Hannah, A., Rosenau, J., Berbeco, M., & Reid, A. (2016) Climate confusion among U.S. teachers. Science, 351(6274), 664-665. DOI: 10.1126/science.aab3907  

  • March 8, 2016
  • 06:47 AM
  • 283 views

How Einstein Could Still Save the Earth

by Jeffrey Daniels in United Academics

Gravitational waves, detected by LIGO, might have implications for finding black holes.... Read more »

  • February 29, 2016
  • 09:39 AM
  • 272 views

End of Universe – estimated earliest time

by Usman Paracha in SayPeople

Main Point:

Universe would end earlier than the anticipated time for the Sun to burn completely.

Published in:

arXiv

Study Further:

Scientific observation of the stars and galaxies in our universe are showing that the universe is continuously expanding, and the rate of this expansion is continuously increasing. After looking at this continuous expansion, one of the suggested possibilities for the future is that, the stars would die, everything in the universe will drift out, and t........ Read more »

Jose Beltran Jimenez, Ruth Lazkoz, Diego Saez-Gomez, & Vincenzo Salzano. (2016) Observational support for approaching cosmic doomsday. arXiv. arXiv: 1602.06211v1

  • February 19, 2016
  • 10:42 AM
  • 351 views

So you want to make methanol? Start with ruthenium and add some air

by Jonathan Trinastic in Goodnight Earth

The methanol economy is an exciting prospect - create the molecule using CO2 from the atmosphere, reducing greenhouse gases and providing liquid fuel at the same time! Researchers have now shown how to create methanol directly from air for the first time.... Read more »

Kothandaraman J, Goeppert A, Czaun M, Olah GA, & Prakash GK. (2016) Conversion of CO2 from Air into Methanol Using a Polyamine and a Homogeneous Ruthenium Catalyst. Journal of the American Chemical Society, 138(3), 778-81. PMID: 26713663  

  • February 17, 2016
  • 01:39 AM
  • 303 views

New model says that the Universe has no start and it existed forever

by Usman Paracha in SayPeople

Main Points:

According to a new model, Big Bang never happened and Universe existed forever without any beginning.

Published in:

Physics Letters B

Study Further:

According to our present knowledge, Universe came into existence about 13.8 billion years ago. Before the existence of Universe, everything was in the form of a tiny point, which is also referred to as singularity. Therefore, it is assumed that everything in the Universe was present in that tiny point at that time. Then a........ Read more »

Farag Ali, A., & Das, S. (2015) Cosmology from quantum potential. Physics Letters B, 276-279. DOI: 10.1016/j.physletb.2014.12.057  

  • February 14, 2016
  • 07:00 PM
  • 184 views

Quixotic Science

by Paco Jariego in Mind the Post

Almost all science stems from a need to explain what we see. Not general relativity. What comes first, theory or technology? a reflection after LIGO has detected gravitational waves.... Read more »

The LIGO Scientific Collaboration, & the Virgo Collaboration. (2016) Observation of Gravitational Waves from a Binary Black Hole Merger. Phys. Rev. Lett. 116, 061102 (2016). arXiv: 1602.03837v1

  • February 14, 2016
  • 08:00 AM
  • 426 views

Einstein et les ondes gravitationnelles

by Dr. Goulu in Pourquoi Comment Combien

En recherchant où et quand Einstein avait prévu l’existence des ondes gravitationnelles dont tout le monde parle, je suis tombé non seulement sur son article en allemand de 1918, mais aussi sur un court article qui en retrace l’historique. En fait, Einstein s’était planté deux ans plus tôt dans un autre article.... Read more »

Kennefick, D. (2005) Einstein versus the Physical Review. Physics Today, 58(9), 43-48. DOI: 10.1063/1.2117822  

  • February 13, 2016
  • 05:02 AM
  • 380 views

Now we can hear the Universe

by TakFurTheKaffe in Tak Fur The Kaffe

The detection of gravitational waves produced by the collision of two black holes over 1 billion light years away confirms Einstein's vision of our Universe.... Read more »

Abbott, B., Abbott, R., Abbott, T., Abernathy, M., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R.... (2016) Observation of Gravitational Waves from a Binary Black Hole Merger. Physical Review Letters, 116(6). DOI: 10.1103/PhysRevLett.116.061102  

  • February 8, 2016
  • 12:41 PM
  • 396 views

Why Ask for Directions? (A Guest Post)

by Miss Behavior in The Scorpion and the Frog

by Anna Schneider For the iconic monarch butterfly, the shorter days in fall mean it’s time to pack up and head south to a warmer climate! Just like clockwork, the Eastern population of monarch butterflies makes a 2000 mile journey to their winter paradise roosts in central Mexico. The journey in itself is one of the greatest migrations among all animals. But here’s the catch: none of these butterflies has made this trip before. Several generations of monarchs have come and gon........ Read more »

  • February 5, 2016
  • 03:00 PM
  • 450 views

Four Legs Good, Two Legs Better for Hurdling Obstacles

by Elizabeth Preston in Inkfish



Although lizards mostly scurry on all fours, certain species can run on two legs when the mood strikes. What's the benefit to this human-like running style? For one thing, it seems to let lizards get over obstacles without slowing down. They just have to make sure not to tip over.

Georgia Southern University biologist Lance McBrayer and graduate student Seth Parker studied running in a handsome little reptile called Sceloporus woodi, or the Florida scrub lizard. McBrayer says there's been... Read more »

  • February 5, 2016
  • 09:09 AM
  • 414 views

Greenland ice sheets losing ability to absorb meltwater

by Jonathan Trinastic in Goodnight Earth

Greenland has long held sea-level rise at bay, absorbing melted water into spongy upper layers. But new research has found that icy covers to these layers are preventing water absorption and driving water into the oceans.... Read more »

Machguth, H., MacFerrin, M., van As, D., Box, J., Charalampidis, C., Colgan, W., Fausto, R., Meijer, H., Mosley-Thompson, E., & van de Wal, R. (2016) Greenland meltwater storage in firn limited by near-surface ice formation. Nature Climate Change. DOI: 10.1038/nclimate2899  

  • January 29, 2016
  • 12:29 PM
  • 429 views

Lizards Overcome Lack of Mirrors to Find Rocks That Match Their Colors

by Elizabeth Preston in Inkfish



Think about the last time you stood squinting in front of a full-length mirror, trying to decide whether the colors in your outfit went together. Now imagine you're a reptile, and you wouldn't even understand a mirror if you saw one, but somehow you need to find a rock that matches your skin color. Otherwise you might get eaten by a bird today. Oh, and the skin color you need to match is on your back.

Certain lizards in Greece manage to pull this off every day, though how they do it is a ... Read more »

  • January 29, 2016
  • 08:39 AM
  • 363 views

The power of poop: revolutionizing wastewater treatment

by Jonathan Trinastic in Goodnight Earth

A commentary in Nature proposes a complete overhaul of how we treat our wastewater. Among the benefits would be new energy-producing industry and reduce greenhouse gas emissions!... Read more »

Li, W., Yu, H., & Rittmann, B. (2015) Chemistry: Reuse water pollutants. Nature, 528(7580), 29-31. DOI: 10.1038/528029a  

  • January 22, 2016
  • 10:21 AM
  • 364 views

When good intentions don't mix: designing policy to stop global warming and improve clean cookware access

by Jonathan Trinastic in Goodnight Earth

Carbon fees are a tremendous policy tool to reduce greenhouse gas emissions. But what is their effect on other public health missions, like providing cleaner cookware to the poor in developing countries. We take a look at new research designing policy to meet both public health needs.... Read more »

  • January 16, 2016
  • 03:12 PM
  • 513 views

‘Space Warps’ and other citizen science projects reap major dividends for astrophysics

by Dr. Jekyll in Lunatic Laboratories

Thanks to the Internet, amateur volunteers known as "citizen scientists" can readily donate their time and effort to science--in fields ranging from medicine to zoology to astrophysics. The astrophysics project Space Warps offers a compelling example of why citizen science has become such a popular tool and how valuable it can be.

... Read more »

Marshall, P., Verma, A., More, A., Davis, C., More, S., Kapadia, A., Parrish, M., Snyder, C., Wilcox, J., Baeten, E.... (2015) SPACE WARPS - I. Crowdsourcing the discovery of gravitational lenses. Monthly Notices of the Royal Astronomical Society, 455(2), 1171-1190. DOI: 10.1093/mnras/stv2009  

More, A., Verma, A., Marshall, P., More, S., Baeten, E., Wilcox, J., Macmillan, C., Cornen, C., Kapadia, A., Parrish, M.... (2015) SPACE WARPS- II. New gravitational lens candidates from the CFHTLS discovered through citizen science. Monthly Notices of the Royal Astronomical Society, 455(2), 1191-1210. DOI: 10.1093/mnras/stv1965  

  • January 15, 2016
  • 12:08 PM
  • 399 views

Amazon resilience buoyed by diversity

by Jonathan Trinastic in Goodnight Earth

Previous research has suggested that the Amazon could reach a tipping point when rainforest gives way to a grassy savannah. Could this really happen? A new modeling study suggests the diversity of the Amazon could prevent such a drastic change.... Read more »

Levine NM, Zhang K, Longo M, Baccini A, Phillips OL, Lewis SL, Alvarez-Dávila E, Segalin de Andrade AC, Brienen RJ, Erwin TL.... (2015) Ecosystem heterogeneity determines the ecological resilience of the Amazon to climate change. Proceedings of the National Academy of Sciences of the United States of America. PMID: 26711984  

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.