APS Physics
APS Physics
yesterday at 17:04. Facebook
The XPCI imaging technique detects both the absorption and the "phase shifts" (shifts in positions of wave peaks and troughs) induced in the x-rays passing through an object. A new version of it requires much less time—good for biological samples that age quickly, and of course, restless patients.
The XPCI imaging technique detects both the absorption and the phase shifts

Focus: 3D Images 10 Times Faster

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Mizanur Rahman
APS Physics
APS Physics
yesterday at 14:00. Facebook
Though Isaac Newton devised his universal law of gravity and equations of motion, Erwin Schroedinger made an equation that is the quantum equivalent to the classical laws of motion and conservation of energy in classical physics three hundred years later. He cracked the problem of trying to model the motion of an electron around a nucleus as a wave rather than an orbiting particle and wrote to...
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Though Isaac Newton devised his universal law of gravity and equations of

This Month in Physics History

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John M Murphy
Saurav Mishra
APS Physics
APS Physics
04/27/2017 at 16:09. Facebook
3D-printing allowed physicists at Ecole polytechnique fédérale de Lausanne (EPFL) to fabricate a complex part faster and with higher quality than could be expected with traditional machining. Maybe future physics enthusiasts will print entire physics experiments for home use?
3Dprinting allowed physicists at Ecole polytechnique fédérale de Lausanne EPFL t

Synopsis: Beam Splitter is Printed On-Demand

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Mike Colbourne
APS Physics
APS Physics
04/26/2017 at 16:26. Facebook
Artist Yunchul Kim uses physicists' materials and methods and spent time interacting with CERN physicists. He has even helped to inspire a physics conference.
Artist Yunchul Kim uses physicists materials and methods and spent time interacting

Arts & Culture: Artist in Physicist’s Clothing

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APS Physics
APS Physics
04/26/2017 at 14:00. Facebook
On this day in 1920, the Natural History Museum hosted a historic "debate" on competing theories about the scale of the universe. Harlow Shapley and Heber D. Curtis' confrontation at the 1920 meeting of the National Academy of Science helped create a major shift in humanity's view of its place in the universe.
On this day in 1920 the Natural History Museum hosted a historic

This Month in Physics History

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APS Physics
APS Physics
04/25/2017 at 21:59. Facebook
Future quantum computers and quantum networks will need to reliably send quantum bits (qubits) from one location to another, probably using photons. A team has now used a clever trick to do just that with a single photon and without losing the fragile state in the process, explains physicist Oliver Benson of Humboldt-Universität zu Berlin. Research from ETH Zürich.
Future quantum computers and quantum networks will need to reliably send quantum

Viewpoint: Linking Two Quantum Dots with Single Photons

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Frank Wu
Flemming Sorensen
Amith Amith
APS Physics
APS Physics
04/25/2017 at 14:00. Facebook
Solar cells, which convert sunlight into electrical current, were first made from selenium by Charles Fritts in 1883; however they were not very practical. In 1940, Russell Shoemaker Ohl had been investigating some silicon samples and noticed current flowed through a cracked sample when exposed to light. He had inadvertently made the basis of a solar cell and later patented his solar cell. ...
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Solar cells which convert sunlight into electrical current were first made from

This Month in Physics History

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APS Physics
APS Physics
04/24/2017 at 18:05. Facebook
The oscar-nominated film "Hidden Figures" shed light on a success story of african-american women in science. But what are the other triumphs that exist in the present-day for these women? At the APS March Meeting, a few women shared their stories about their role in physics, and how their actions have gotten younger generations excited about the world around them:
The oscarnominated film Hidden Figures shed light on a success story of

How African-American Women Succeed in Physics

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Francisco Franklin
APS Physics
APS Physics
04/24/2017 at 17:35. Facebook
Atoms have been cooled by lasers to tiny fractions of a degree above absolute zero, but molecules are much harder to cool because energy in their rotations and vibrations is difficult to control. Researchers have recently cooled and trapped diatomic molecules, and now a team has cooled a beam of triatomic molecules in one dimension, perpendicular to the beam direction. Cooling molecules may...
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Atoms have been cooled by lasers to tiny fractions of a degree

Viewpoint: A Diatomic Molecule is One Atom too Few

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APS Physics
APS Physics
04/23/2017 at 14:00. Facebook
Though melting ice absorbs a large amount of heat, the temperature does not increase. The evaporation of water absorbs even more heat without temperature changes. When water freezes, or vapor condenses, this "latent heat" returns to the environment. On this day in 1762, Joseph Black gave his first account on his findings of "latent heat" and the profound effect it has on weather and climate.
Though melting ice absorbs a large amount of heat the temperature does

This Month in Physics History

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Gazing up at the starry night sky, you might have asked yourself the ultimate philosophical question — "Why are we here?"

In Lawrence Krauss' recent book, "The Greatest Story Ever Told — So Far", he speaks to the people who have asked that same question, and addresses our understanding of the universe as a result of the development of the standard model of particle physics. What does this...
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Gazing up at the starry night sky you might have asked yourself

The Back Page

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Kyle Thomas
Standard electronic devices shuttle around electrons, making use of their charges but not their spins. Spintronic devices would use their spins instead, but their are many challenges in developing these devices, such as choosing the material. Germanium is similar to silicon, around which there is a large fabrication infrastructure, but germanium produces weak spin currents. Now researchers...
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Standard electronic devices shuttle around electrons making use of their charges but

Focus: Germanium Revived from the Spintronics Graveyard

physics.aps.org
Frank Wu
Cheasilo Sals
Cheasilo Sals
As summer approaches, the smells of backyard barbecues might come to mind. Getting the tinge of smokey flavor, the perfect amount of grilling, and that unforgettable mouthwatering flavor, comes down to the physics, says Greg Blonder of Boston University. Learn more about his recipe for BBQ success in this months issue of APS News:

[ Aps.org Link ]
As summer approaches the smells of backyard barbecues might come to mind

Profiles In Versatility

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LIGO's discovery of gravitational radiation kicked off a revolution in astronomy. For example, after a year's worth of data at LIGO's highest sensitivity, astrophysicists may learn whether black holes are truly "bald," as theorists predict. Baldness means that black holes have no observable properties beyond mass, charge, and angular momentum. If true, every black hole with the same values of...
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LIGOs discovery of gravitational radiation kicked off a revolution in astronomy For

Synopsis: Turning up the Ringdown

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APS has endorsed and is an official partner of the March for Science on April 22 in Washington, D.C.

The March for Science is a worldwide movement to draw attention to the importance of science in exploring and explaining our world, enhancing our daily lives, and improving policymaking.

Learn more [ Aps.org Link ]
APS has endorsed and is an official partner of the March for
In the "twitter-sphere", 140 characters can tell a story, connect you with colleagues, or help scientists spread the word of their research. APS uses twitter and other social media accounts to reach out to attendees of the March and April meetings, with scientists using it a bit differently each year. Learn about how APS is going social in this issue of APS News:
In the twittersphere 140 characters can tell a story connect you with

APS Meetings Go Social

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A reliable blast of a few billion neutrons could be useful for studies of materials, for which the particles serve as microscopic probes. But neutrons sources are often unreliable or weak. Now Chinese researchers have shown that laser-induced nuclear fusion can produce a few billion neutrons in one burst.
A reliable blast of a few billion neutrons could be useful for

Synopsis: Neutrons On-Demand from Laser Fusion

physics.aps.org
Julio Herrera-Velázquez
Quartz is a 3D crystalline form of silicon dioxide, but in 2D it can have another crystal structure. Other materials with different 2D structures could have useful properties, so a team of theorists has now predicted a series of them. They found new, stable structures for oxides of germanium, tin, and lead. From University of Florida, National Institute of Standards and Technology, Cornell...
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Quartz is a 3D crystalline form of silicon dioxide but in 2D

Synopsis: A Crystal Ball for 2D Materials

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After spending the summer of 1909 doing research with the General Electric Company, Irving Langmuir accepted a position there as a researcher and his early research was on the use of the lightbulb for the study of gas at varying temperatures and pressures. He found that the presence of nitrogen slowed the evaporation process, and that thin filaments radiated heat faster than thick filaments....
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After spending the summer of 1909 doing research with the General Electric

This Month in Physics History

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Atom interferometers use the fact that atoms can act like waves to make extremely sensitive measurements of accelerations and of Earth's gravity. But they normally require extremely cold atoms. A new technique with warm atoms potentially makes these interferometers much more practical for a wide range of uses, such as in navigation for submarines, which operate beyond the reach of GPS....
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Atom interferometers use the fact that atoms can act like waves to

Viewpoint: Atom Interferometers Warm Up

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