Profile

Cover photo
APS Physics
4,725 followers|796,139 views
AboutPostsPhotosYouTube

Stream

APS Physics

Shared publicly  - 
 
The Dark Energy Survey has published a detailed map of dark matter in one patch of sky as a first step in studying dark energy— a mysterious expanding force in the Universe. Since dark matter is invisible, they instead imaged large numbers of distant galaxies in search of tiny distortions caused light rays being bent by the gravity of intervening dark matter.
The Dark Energy Survey has generated a map of invisible dark matter by observing tiny gravitationally induced distortions in the images of distant galaxies.
7
3
Narges Aghamir's profile photoGuillermo Rubilar's profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
Nanoscale forces are key to explaining how puddles behave. They become important at the edges of a puddle, where the fluid surface gets very close to the solid underneath.
Classical fluid theory can't explain a puddle that spreads and then stops. A new theory solves the problem by incorporating intermolecular forces between the liquid and the solid underneath.
1
2
Андрей Рогачёв's profile photobc0209 ufabc's profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
Bird flocks, insect swarms, cell colonies—these are "active matter," where many identical elements can propel themselves and generate large-scale, collective phenomena. Top researchers in the field recently met in China.
At the meeting, researchers presented new models to describe the developing wing of a young fly, colloidal particles that propel themselves, and the liquidlike behavior of cell colonies .
12
4
Sahaschai Thomya's profile photoVisionlearning's profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
Traditional filters that absorb light over a certain range of frequencies have the drawback that they also reflect some light at other frequencies. This new "metasheet" reflects nothing outside the absorption range. Could be useful for stealth technology.

This paper is published in Physical Review X, a fully open access journal.
An array of helical elements absorbs radiation of a certain frequency while casting no shadow in light over a range of other frequencies.
4
1
Андрей Рогачёв's profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
APS members took to the polls over the past month to select new leadership, and the results are in!
1
1
Андрей Рогачёв's profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
The APS General Election closes at 1:00 a.m. EDT. APS members, please take a moment to log in and vote! http://go.aps.org/1OV9uGf
4
2
Андрей Рогачёв's profile photoEmily Fuger's profile photo
Add a comment...
Have them in circles
4,725 people
Massimo T.'s profile photo
Wordpress Developers's profile photo
samir boumer's profile photo
KARSTEN HOLLAND's profile photo
Steve Wignall's profile photo
Ashish Khawale's profile photo
Will Swindells's profile photo
TUFAN ROY's profile photo
Subramanya M S's profile photo

APS Physics

Shared publicly  - 
 
In "atomtronics" research, physicists coax cold atoms in traps to operate the way electrons do in electronic circuits, in hopes of building future devices and also studying fundamental physics principles. Now a team has demonstrated negative differential resistance—normally seen in diodes—where an increase in voltage leads to a decrease in current.
Rubidium atoms in an optical trap have been made to exhibit negative differential conductance, a phenomenon normally found in semiconductor diodes.
51
21
Monique Zorzella's profile photoKrishna Prasad's profile photoSunddher S's profile photoDiadon Acs (Conscious Energies)'s profile photo
 
Doesn't this happen in any resonant circuit? 
Add a comment...

APS Physics

Shared publicly  - 
 
Some craters are formed by collapse of the ground into an underground void, rather than by an impact. Experiments with sand show that these collapse craters look different from impact craters, research that could help scientists assess planetary terrains.
3
2
Андрей Рогачёв's profile photoCassio Production's profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
+LHCb Experiment researchers have discovered an exotic particle made up of five quarks.
Exotic subatomic particle confirmed at Large Hadron Collider after earlier false sightings.
10
8
Tanushree Madhavan's profile photoAndrew King (science student)'s profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
Bacteria swimming in a fluid can eliminate the fluid's viscosity, making it into a helium-like superfluid. The microbes can even generate negative viscosity—meaning they can produce fluid motion and perhaps drive a microfluidic pump.
Self-propelling bacteria can reduce the viscosity of a fluid to zero through a collective organization of their swimming.
5
4
Jose Cuesta's profile photoDiego Adrian's profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
A new quasiparticle called a "topolariton" combines a photon with an electron-hole pair in a semiconductor. It zips around the edges of the solid in only one direction--can't scatter and make a U-turn. This stability could be useful for guiding light in future chip-like devices.
Quasiparticles dubbed topological polaritons make their debut in the theoretical world.
3
4
Eduardo Novais's profile photoHilmar Hoffmann's profile photo
Add a comment...

APS Physics

Shared publicly  - 
 
The "Penrose process" allows a particle near a spinning black hole to escape by stealing some of the hole's energy. Now theorists show that the energy can be much higher than anyone had thought and that it might be important for observations of some high-energy astronomical phenomena.
Particles orbiting near a spinning black hole might collide and get ejected with much more energy than previous calculations showed.
14
5
Eduardo Novais's profile photoSanjeev Kumar's profile photoLynn Dickson's profile photoChristopher Veld's profile photo
3 comments
 
Science gravity fails to follow math rules. It 1 d concept over a 2d plane. Just by looking at that art work, I see 3d orthaginal constructs. Which would fail this process.

http://aaronsreality.blogspot.com/2015/05/black-hole-ejectinnng-what-does-that.html
Why is it that blackholes are ejecting stars?
Add a comment...
People
Have them in circles
4,725 people
Massimo T.'s profile photo
Wordpress Developers's profile photo
samir boumer's profile photo
KARSTEN HOLLAND's profile photo
Steve Wignall's profile photo
Ashish Khawale's profile photo
Will Swindells's profile photo
TUFAN ROY's profile photo
Subramanya M S's profile photo
Contact Information
Contact info
Email
Story
Tagline
Working to advance and diffuse the knowledge of physics
Introduction
The American Physical Society (APS) is a non-profit membership organization working to advance and diffuse the knowledge of physics through its outstanding research journals, scientific meetings, and education, outreach, advocacy and international activities. APS represents more than 50,000 members, including physicists in academia, national laboratories and industry in the United States and throughout the world. Society offices are located in College Park, Maryland (Headquarters), Ridge, New York, and Washington, DC.