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Simulations show that the strong magnetic field of a neutron star is complex. Over time a ring of stronger field develops around the equator. And hundreds of thousands of years after the neutron star's creation, the field can continue to produce "starquakes."
Simulations of the magnetic field of a neutron star show that shear stresses induced by the field are strong enough to fracture the star’s crust.
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A new APS committee is trying to address concerns of LGBT+ physicists and physics students. If you identify in those or related categories and are in physics, please help out by submitting this brief survey (and by telling your physics friends). There is not much hard data on the LGBT+ physics experience.
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Pls how can I participate? Am in Nigeria. +2347031255798 mickeynons4u@gmail.com
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Active matter refers to bird flocks, self-propelled particles in water, or any other set of objects that can move on their own. Theorists have come up with an "equation of state" for them, meaning they are beginning to apply the hugely successful tools of classical thermodynamics, which normally would not apply to out-of-equilibrium systems.
An equation of state for a gas of self-propelled spheres is a step towards a thermodynamic description of “active” matter, such as bird flocks and tissue.
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Researchers can transfer the info in a laser light signal to a cloud of atoms for temporary storage, which could be useful in future computer chip designs. But in the world of information technology, light signals travel through optical fibers. Now a team has shown that even light signals in fibers can communicate with atom clouds.
Light signals propagating down an ultrathin fiber can be temporarily stored in a cloud of cold atoms surrounding the fiber.
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Cooling a semiconductor with laser light: Laser pulses produce electron-hole pairs that partner with photons to form so-called polaritons. These particles can absorb a quantum of vibration (a phonon) and then disappear by radiating a photon that carries energy away from the material.
A gas of polaritons can serve as a coolant fluid that transports heat away from a semiconductor microcavity.
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Good.very useful information.
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The Alpha Magnetic Spectrometer, a long-running experiment on the International Space Station, finds that there are more cosmic-ray protons of very high energy (energies comparable to those of particles in colliders) than naïvely expected.
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The two largest collaborations of physicists have combined forces to make a precision measurement of the mass of the Higgs boson. The resulting paper in Physical Review Letters has 5,154 authors—the most ever for a single research paper (see http://go.aps.org/1ILT3sZ for an article about this record).
A new value for the Higgs boson mass will allow stronger tests of the standard model and of theories about the Universe’s stability.
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The 2015 APS General Election is open! APS members can log in and vote now for the 2016 APS vice president, treasurer, chair-elect of the nominating committee, international councilor, and general councilor http://go.aps.org/1aeSUl9
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Going green with helium: A new helium liquefier works more efficiently than others by using high pressure to liquefy the gas that is recovered from MRI machines and other low temperature devices in labs and hospitals.
A new device for recycling the helium coolant in an MRI scanner or similar machine uses elevated pressure to dramatically increase the rate at which helium is liquefied.
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Theorists can now predict the patterns formed by a viscous jet like toothpaste or honey falling on a surface. It might be applicable to laying cables on the sea floor, 3D printing, or guiding the fabrication of patterned microstructures made of threads of fabric.
A new model can predict the patterns formed by a viscous jet falling onto a moving surface.
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The IceCube neutrino observatory at the South Pole sees the three types of high-energy neutrinos in roughly equal portions, suggesting that the particles have conventional and cosmic origins. The results contradict an earlier report that suggested more exotic origins for the particles.
The highest energy neutrinos ever recorded have a flavor distribution of neutrinos that is consistent with the particles having a cosmic origin.
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Registration and abstract submission for CAM 2015 is now open! Students at U.S. institutions may apply to attend on the APS website. CAM is a bi-annual conference planned by and for graduate students to bring together physics grads from the United States, Canada, and Mexico. The registration/abstract submission deadline is May 25, 2015.
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Have them in circles
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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.