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updated Mon. January 22, 2018

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A new acoustic trap combines two vortex-shaped sound waves to trap objects up to 4 times larger than is possible with existing traps. Synopsis figure. A. Marzo et al., Phys. Rev. Lett. (2018). Acoustic traps use sound waves to capture and move an object remotely. But, to date, these traps have only worked ...
One of the biggest mysteries in astroparticle physics has been the origins of ultrahigh-energy cosmic rays, very high-energy neutrinos, and high-energy gamma rays. Now, a new theoretical model reveals that they all could be shot out into space after cosmic rays are accelerated by powerful jets from ...

Artist's concept shows the gaseous exoplanet CoRoT-2b with a westward hot spot in orbit around its host star. Credit: NASA/JPL-Caltech/T. Pyle (IPAC). The hottest point on a gaseous planet near a distant star isn't where Astrophysicists expected it to be - a discovery that challenges scientists' ...
Human: Fall Flat is less dopey than it looks, though it does look very dopey. From screenshots you might think it's just a goofy physics game about gelatinous jelly people straight out of Gang Beasts who flop around castles, power plants, and train depots, but it's also a fairly smart puzzler--once you get the ...
For the first time, physicists have discovered a way to levitate large objects--as in, human-sized objects--with an acoustic tractor beam. Acoustic tractor beams work by using sonic power to capture particles and suspend them in mid-air, according to a press release from the University of Bristol. This gives ...

The answer to chronic pain in fibromyalgia patients might be found not in the medical clinic, but instead in the physics lab. A new study posits that hyperactivity in the brain networks of patients with fibromyalgia is to blame for those patients' chronic pain. According to the research, that hyperactivity causes ...
Washington University's physics department and Cornerstone will launch a Peer Led Team Learning program for introductory physics students this semester. Previously, Cornerstone only offered Peer Led Team Learning (PLTL) for General chemistry (I and II) and Calculus (I, II and III). The physics ...
Business Impact. The Best of the physics arXiv (week ending January 20, 2018. This week's most thought-provoking papers from the physics arXiv. by Emerging technology from the arXiv; January 20, 2018. A roundup of the most interesting papers from the arXiv: ...
An idea for an experiment that could unite the stubborn fields of quantum mechanics and general relativity has been given new life by two groups of physicists from the UK. The fact that quantum theory doesn't play well with gravity is a massive stumbling block in physics, one that has long eluded some of ...
China and Austria used a satellite link to exchange quantum encrypted data for images and a video stream, a first step toward a secure "quantum internet." Figure caption expand figure. J.-W. Pan/USTC. Eye in the Sky. The satellite Micius relayed quantum-secure signals between China and Austria.
The CMS experiment is looking for exotic long-lived particles that could get trapped in its detector layers. Credit: Michael Hoch, Maximilien Brice/CERN. New particles produced in the LHC's high-energy proton-proton collisions don't hang around for long. A Higgs boson exists for less than a thousandth of a ...
If we know the initial state of a system exactly, then do the laws of physics determine its state arbitrarily far into the future? In Newtonian mechanics, the answer is yes. Similarly in electromagnetism: if one knows the initial state of the electric and magnetic fields exactly, then Maxwell's equations determine ...
(Inside science) -- On average, about 8 million acres of land burns each year from wildfires. Big fires can reduce forests and grasslands to ash and can destroy homes and lives. Sadly, up to 90 percent of wildland fires in the United States are caused by humans' carelessness, like unattended campfires, ...
Sometimes when I see an awesome analysis on the internet, I just want to make it more awesomer. Really, this should be everyone's goal on the internet--either make stuff or make it more awesome. In this case, it's a post from Singletrack (and also covered by Boing Boing) looking at a particular crossroad ...
physicists have designed the first device to create particles with charged negative mass. The breakthrough could lead to an entirely new way to generate laser light using only a tiny amount of energy. The success hinged on making a device that allowed for the creation of strange particles called polaritons.
The physics of black ice and "wheel-track glazing" · Paul Huttner January 12, 2018, 3:34 PM Jan 12, 2018 · 0. It's a stealthy hazard for Minnesota winter drivers. ... The reason is physics of snow and ice. A few inches of snow actually offers much more traction than a thin layer of ice. Black ice is particularly stealthy.

The nostalgia wave was strong at CES 2018, the big tech trade show in Las Vegas this week. I got a taste of it when I saw Atari Table Pong, a mechanical and digital table game in which you spin foam paddles to play. It's sort of like an air hockey table, with the action taking place under a glass enclosure.
The quest to explore the frontiers of physics will heat up next month in Japan, when beams of high-energy electrons are set to start smashing into their antimatter counterparts at one of the world's premier accelerator laboratories. The experiment, called Belle II, aims to chase down rare, promising hints of ...
Because, man, they really are. Crows and blackbirds look, y'know, black-like ... but birds of paradise look like a hole has been punched in reality. It's like they've been coated in Vantablack, the freakily engineered substance you can coat on objects to make them superdark. The birds also often have striking ...
Most people are pretty familiar with absolute zero, it's -273.15 degrees Celsius (-459.67 degrees Fahrenheit), and it's the lowest possible temperature that can ever be achieved, according to the laws of physics as we know them. This is because it's the coldest an entity can get when every single skerrick of ...
If you saw and loved Star wars: The Last Jedi, chances are one of the moments you came away talking -- or screaming, or giddily hyperventilating -- about was the culmination of Vice Admiral Holdo's secret plan to strike back at the First Order. In one of the most unforgettable instances in the Star Wars ...
A substantial investment is needed to build the next generation of astroparticle physics research infrastructures according to a roadmap published by the Astroparticle physics European Consortium (APPEC). The document - a vision for European astroparticle physics for the next decade - makes 21 ...
A mathematical discrepancy in the expansion rate of the Universe is now "pretty serious", and could point the way to a major discovery in physics, says a Nobel laureate. The most recent results suggest the inconsistency is not going away. Prof Adam Riess told BBC News that an unknown phenomenon, ...
That those tubes have, in the more than 20 years the experiment has been running, failed to do so is a conundrum for physics, and one that is becoming more urgent with every passing month. Grand unified theories (GUTs), thought since their genesis in the 1970s to be the most promising route to ...
"The easiest way to determine the temperature of a spherical droplet was to measure its size, which can be accurately determined by exploiting the presence of an interference pattern in the light scattered by the droplet," Grisenti tells physics World. Inside spherical droplets of certain diameters, standing ...
Washington Township high school will play host to the New Jersey Section of the American Association of physics teachers' (NJAAPT) 2018 physics Olympics on Saturday, Jan. 13. A second competition is being hosted on the same day at Monmouth Regional High school for North and Central Jersey ...
"So far, the formalism of condensed matter physics has only found limited use in classical biochemistry and biophysics. As a result, certain interesting effects evade our attention," says Konstantin Motovilov, a senior research scientist at the Laboratory of Terahertz Spectroscopy at Moscow Insititute of ...
In 1997, Chu won the Nobel prize for physics along with Claude Cohen-Tannoudji and William D. Phillips for their work on cooling and trapping atoms with laser light. This research has contributed to the study of new states of matter and aided the development of more precise atomic clocks, accelerometers ...
students might know him from a physics 211 class, but Coutu does much more than lecture on kinematics. His research centers on the detection and study of cosmic rays, or high energy particles emanating from the universe, intercepting the Earth -- something discovered back in 1912 and still seen by ...
When associate professor Stephanie Majewski of the physics department and her colleagues were planning the upcoming Northwest Regional Conference for Undergraduate women in physics, they were not overwhelmed by interest in the event. They were greatly overwhelmed. Two hundred and twenty ...
SALISBURY -- The Scoville Memorial Library will hold a special presentation for its World Around Us Series: An Introduction to Quantum physics, presented by Dr Mathew Deady on Thursday, Jan. 11 at 6 p.m. in the Wardell Room at the library, 38 Main Street, Salisbury. For details and registration, call ...
Journals · Physical Review Letters · Physical Review X · Reviews of Modern physics · Physical Review A · Physical Review B · Physical Review C · Physical Review D · Physical Review E · Physical Review Applied · Physical Review Fluids · Physical Review Materials · Physical Review Accelerators and ...
Picking a landing site for a Mars rover isn't easy. The location has to be flat, lie at low elevation, and be free of dust and rocks, all so that the SUV-sized rover can touch down without crashing. The site must also be close to the region scientists want to study or else the slow-moving rover, which tools about at ...
NOVOSIBIRSK, January 9. /TASS/. The Budker Institute of nuclear physics (BINP) of the Siberian Branch of the Russian Academy of sciences has clinched a deal with an Indian cable producer, Siechem, for the supply of four electron accelerators in 2018 to the tune of roughly $3 mln, the institute's press ...
"So far, the formalism of condensed matter physics has only found limited use in classical biochemistry and biophysics. As a result, certain interesting effects evade our attention," says Konstantin Motovilov, senior research scientist at the Laboratory of Terahertz Spectroscopy. "When we do make use of this ...
physicists studying atomic spin surprised themselves by discovering that spinning protons bizarrely change direction when they crash into larger particles, like the nuclei of gold atoms. On a pool table, you'd expect a left-spinning cue ball to deflect off to the right after it hits another ball. What the physicists ...
As she pored over A Brief History of Time, she realized physics sought to answer hefty questions about the universe largely through math, for which she had a natural knack. After majoring in theoretical physics, she earned a Ph.D. in physics from Harvard, did a postdoc at the Institute For Advanced Study ...
Business Impact. The Best of the physics arXiv (week ending January 6, 2018). This week's most thought-provoking papers from the physics arXiv. by Emerging technology from the arXiv; January 6, 2018. A roundup of the most interesting papers from the arXiv: ...
Researchers from the National Institute of Standards and technology and the department of physics at the University of Colorado, Boulder, arrived at the breakthrough by experimenting with very low-frequency radio. The lower a signal's frequency, the farther it travels, but at the expense of the precision ...
Biodiversity is stunning yet puzzling. How can several species compete for the same nutrient sources and still coexist, rather than having one winner monopolizing the resources? One approach to resolving this sort of paradox is the 'kill the winner' hypothesis: the most successful species is selectively ...
Next December, there'll be a new entrant into the end-of-year, blockbuster science fiction movie category: the Peter Jackson film Mortal Engines. A teaser trailer for it dropped just before the holidays, and there's really only one thing you need to know about it. Driving cities. Driving cities! Now, I know the ...
As he took up different posts in academic research in Italy and abroad, Fermi showed himself to be not only a theorist with unparalleled insight but also adept as an experimentalist (a rare combination) across every kind of physics. He had an uncanny knack for rough-and-ready calculations to obtain ...
What makes Bridge Constructor games interesting is the use of physics and weight. Each girder you add to a bridge will include weight, which the supports will need to withstand. Should parts of the bridge turn red, you'll need to rethink part of the design else you'll have to fish poor lemmings out of the ...
In physics, on the other hand, the possibility that our universe comprises more than three spatial dimensions was first proposed in the wake of Albert Einstein's theory of general relativity in the 1920s. Modern string theory -- trying to reconcile Einstein's ideas with the laws of quantum mechanics -- even ...
"When it was theorized that the quantum Hall effect could be observed in four-dimensional space," said Mikael Rechtsman, assistant professor of physics and an author of the paper, "it was considered to be of purely theoretical interest because the real world consists of only three spatial dimensions; it was ...
"When it was theorized that the quantum Hall effect could be observed in four-dimensional space," said Mikael Rechtsman, assistant professor of physics and an author of the paper, "it was considered to be of purely theoretical interest because the real world consists of only three spatial dimensions; it was ...
black holes are the source of a major quandary when it comes to our understanding of physics; either they can destroy information, which contradicts what we know about quantum mechanics, or they seemingly disregard Einstein's theory of relativity. However, it's now thought by some that the many worlds ...
Russian physicists are building their first klystron generator, a critical particle accelerator component for which the country has previously had to rely on external suppliers in Europe or Japan. Now, researchers from the Siberian branch of the Russian Academy of science's Budker Institute of nuclear physics ...
These molecular species range from the simple diatomics like H2, O2, OH, CO, etc., to the complex species (those with six atoms and above in astrochemistry parlance) including the buckyballs with each molecule telling us the chemistry and physics of the environment from where it was observed. The use ...


resources

This is the web version of the Usenet Physics FAQ (Frequently Asked Questions). Its purpose is to provide good answers to questions that have been discussed often in sci.physics and related usenet newsgroups. The articles in this FAQ are based on those discussions and on information from good reference sources.
...
I'm a mathematical physicist. I specialize in quantum gravity and n-categories, but I'm interested in many other things too. Here's some of my stuff:
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Welcome to the webpage of Deborah Jin's group at JILA, Boulder, Colorado
...

hyperphysics
National Superconducting Cyclotron Laboratory
Nobel Prize in Physics, Educational site by the Nobel e-Museum
String Theory

 

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