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Three teams find a way to measure frequencies with far better precision than previous techniques

(Phys.org)—Three teams working independently have found a nearly identical way to boost the resolution of quantum magnetic sensors, allowing frequency measurements with far higher precision than previous techniques. Two teams, one with ETH Zurich, the other based at Ulm University in Germany, have published their results in the journal Science. Show More Summary

How do the chemicals in sunscreen protect our skin from damage?

Not so long ago, people like my Aunt Muriel thought of sunburn as a necessary evil on the way to a "good base tan." She used to slather on the baby oil while using a large reflector to bake away. Aunt Muriel's mantra when the inevitable burn and peel appeared: Beauty has its price.

The mystery of quantum computers

Our computers, even the fastest ones, seem unable to withstand the needs of the enormous quantity of data produced in our technological society. That's why scientists are working on computers using quantum physics, or quantum computers, which promise to be faster and more powerful than conventional computers.

New technology could revolutionize 3-D printing

A technology originally developed to smooth out and pattern high-powered laser beams for the National Ignition Facility (NIF) can be used to 3-D print metal objects faster than ever before, according to a new study by Lawrence Livermore researchers.

New metamaterial-enhanced MRI technique tested on humans

Scientists from the Netherlands and Russia have designed and tested a new metasurface-based technology for enhancing the local sensitivity of MRI scanners on humans for the first time. The metasurface consists of thin resonant strips arranged periodically. Show More Summary

Study takes step toward mass-producible quantum computers

Quantum computers are experimental devices that offer large speedups on some computational problems. One promising approach to building them involves harnessing nanometer-scale atomic defects in diamond materials.

Laying it All Out

17 hours agoAcademics / Physics : Asymptotia

So, this is what the early stage of the graphic short story laying out process looks like. For me. I actually do it old school with pencil and paper, and actual laying out. You can click for a larger view but I've blurred out some bits - because spoilers. So...20 pages works nicely. Show More Summary

At NPR West

17 hours agoAcademics / Physics : Asymptotia

Well, that was fun. And the NPR West studios in Culver City are fantastic. I'll let you know when the piece, about science consulting for the entertainment industry, appears. Unless I really made a pig's ear of the interview in which case I may well forget to post it. ;) -cvj Click to continue reading this post ? The post At NPR West appeared first on Asymptotia.

Writing Hat!

17 hours agoAcademics / Physics : Asymptotia

Well, yesterday evening and today I've got an entirely different hat - SF short story writer! First let me apologize for faking it to all my friends reading who are proper short story writers with membership cards and so on. Let me go...Show More Summary

Simulating the universe

How to model the cosmos with Einstein's equations

Long-Overdue Photo-a-Day Wrap-Up

During my sabbatical last year, I decided to try to do a photo-a-day project, taking and sharing at least one good picture a day of something or another. The strict photo-a-day format fell victim to my general busy-ness and disorganization, but I did eventually complete the whole thing. In the final post of the series,…

Researchers develop magnetic switch to turn on and off a strange quantum property

When a ballerina pirouettes, twirling a full revolution, she looks just as she did when she started. But for electrons and other subatomic particles, which follow the rules of quantum theory, that's not necessarily so. When an electron moves around a closed path, ending up where it began, its physical state may or may not be the same as when it left.

Solving the riddle of the snow globe

If you've shaken a snow globe, you've enjoyed watching its tiny particles slowly sink to the bottom. But do all small objects drift the same way and at the same pace?

Controlling 3-D behavior of biological cells using laser holographic techniques

A research team led by Professor YongKeun Park of the Physics Department at KAIST has developed an optical manipulation technique that can freely control the position, orientation, and shape of microscopic samples having complex shapes. The study has been published online in Nature Communications on May 22.

Harvard team creates a cold-atom Fermi–Hubbard antiferromagnet

(Phys.org)—A team at Harvard University has found a way to create a cold-atom Fermi–Hubbard antiferromagnet, which offers new insight into how electrons behave in solids. In their paper published in the journal Nature, the group describes...Show More Summary

Odd-petal-number states and persistent flows in spin-orbit-coupled Bose-Einstein condensates

The quantum world is both elegant and mysterious. It is a sphere of existence where the laws of physics experienced in everyday life are broken—particles can exist in two places at once, they can react to each other over vast distances, and they themselves seem confused over whether they are particles or waves. Show More Summary

Researchers seek atomistic insights into ferroelectric materials

At first glance, biomedical imaging devices, cell phones, and radio telescopes may not seem to have much in common, but they are all examples of technologies that can benefit from certain types of relaxor ferroelectrics—ceramics that change their shape under the application of an electric field.

Synopsis: Restricting the Fifth Force

Observations of the orbits of two stars at the center of the Milky Way constrain gravitational models involving a hypothetical fifth force. [Physics] Published Thu May 25, 2017

Diamond sensors boost NMR resolution

Megahertz frequencies measured with sub-millihertz

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