News tagged with precision measurement
New detector design improves gamma-ray measurements
(Phys.org) -- In the pursuit of precision measurements, nothing is simple, even when the apparatus employed appears to be utterly uncomplicated. An instructive case in point is the new ionization chamber used ...
Apr 06, 2012 |
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Quantum copies do new tricks
One of the strange features of quantum information is that, unlike almost every other type of information, it cannot be perfectly copied. For example, it is impossible to take a single photon and make a number of photons ...
Mar 22, 2012 |
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Dance like a neutrino: Quantum scheme to simulate neutrino oscillations
The behaviour of some of the most elusive particles in the known universe can be simulated using three atoms in a lab, researchers at the Centre for Quantum Technologies (CQT) at the National University of Singapore have ...
Mar 21, 2012 |
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'Gravity is climate' - 10 years of climate research satellites GRACE
For the first time, the melting of glaciers in Greenland could now be measured with high accuracy from space. Just in time for the tenth anniversary of the twin satellites GRACE (Gravity Recovery and Climate ...
Space & Earth / Earth Sciences
Mar 16, 2012 |
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World's best measurement of W boson mass tests Standard Model, Higgs boson limits
(PhysOrg.com) -- Just as firemen use different methods to narrow the location of a person trapped in a building, scientists employ two techniques to find the hiding place of the theorized Higgs particle: direct ...
Feb 23, 2012 |
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Scientists launch rocket into aurora
(PhysOrg.com) -- With the full sky shimmering in green aurora, Saturday night (Feb. 18, 2012) a team of scientists, including space physicist Marc Lessard and graduate students from the University of New Hampshire's ...
Space & Earth / Space Exploration
Feb 20, 2012 |
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Scientists deploy lasers, GPS technology to improve snow measurements
- Equipped with specialized lasers and GPS technology, scientists at the National Center for Atmospheric Research (NCAR) are working with colleagues to solve a critical wintertime weather mystery: how to accurately ...
Space & Earth / Earth Sciences
Feb 13, 2012 |
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Physicists create first 'frequency comb' to probe ultraviolet wavelengths
Physicists at JILA have created the first "frequency comb" in the extreme ultraviolet band of the spectrum, high-energy light less than 100 nanometers (nm) in wavelength. Laser-generated frequency combs are the most accurate ...
Feb 01, 2012 |
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High-power, 532 nm-wavelength compact green laser module with high efficiency, high-speed modulation capability
QD Laser, Inc., the Institute for Nano Quantum Information Electronics, the University of Tokyo, and Fujitsu Laboratories Limited today announced the successful development of a high-power 532 nm-wavelength ...
Jan 19, 2012 |
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GLORIA: Unique climate research experiment worldwide
Precise measurements of the atmosphere are indispensable for predictions of climate change and its impacts, as is currently being discussed at the climate change conference in Durban. A group of researchers ...
Space & Earth / Earth Sciences
Dec 06, 2011 |
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New magnetic-field-sensitive alloy could find use in novel micromechanical devices
(PhysOrg.com) -- Led by a group at the University of Maryland (UMd), a multi-institution team of researchers has combined modern materials research and an age-old metallurgy technique to produce an alloy that ...
Nov 23, 2011 |
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Dams -- what goes up must come down, and then what?
Time can take its toll on a dam. As dams age, they are more costly to repair and the risk of a catastrophic dam break increases--putting property and lives at risk. But, removing them can mean big changes to the community, ...
Nov 07, 2011 |
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Kilogramme faces quantum diet after weight problem
The guardians of the world's most important standards of weights and measures have turned to the weird universe of quantum physics to try to resolve a dilemma.
Nov 06, 2011 |
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Redefining the kilogram and the ampere
New research using graphene presents the most precise measurements of the quantum Hall effect ever made, one of the key steps in the process to redefine two SI units.
Sep 29, 2011 |
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Is graphene the best quantum resistance standard?
New research from NPL's Quantum Detection Group presents the most precise measurements of the quantum Hall effect ever made, using the two-dimensional material graphene.
Sep 19, 2011 |
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