News tagged with measurement results


Bright idea illuminates LED standards

Physics / General Physics

created Nov 25, 2008 | popularity 4.6 / 5 (8) | comments 0

The lack of common measurement methods among light-emitting diode (LED) and lighting manufacturers has affected the commercialization of solid-state lighting products. In a recent paper, researchers at the National Institute ...





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Quantum paradox directly observed -- a milestone in quantum mechanics

Quantum paradox directly observed -- a milestone in quantum mechanics

Physics / General Physics

created Mar 04, 2009 | popularity 4.1 / 5 (35) | comments 13

In quantum mechanics, a vanguard of physics where science often merges into philosophy, much of our understanding is based on conjecture and probabilities, but a group of researchers in Japan has moved one ...


Measuring distances in microseconds

Measuring distances in microseconds

Technology / Engineering

created Nov 05, 2009 | popularity 5 / 5 (1) | comments 0

(PhysOrg.com) -- Standard laser devices are fast enough for measuring the size of a room, but they need to be faster for outdoor mobile applications. Researchers have brought these scanners up to speed -- ...


New Automated Technique with Online Verification Eases Network Analyzer Calibration

New Automated Technique with Online Verification Eases Network Analyzer Calibration

Technology / Engineering

created Dec 16, 2009 | popularity not rated yet | comments 0

Verifying the accuracy of network analyzers—instruments that are used to measure key performance characteristics of electronic networks—was once an awkward process involving multiple steps and pieces of equipment.


Physicists make discovery in quantum mechanics

Physics / Quantum Physics

created Sep 23, 2009 | popularity 4.3 / 5 (27) | comments 49

(Santa Barbara, Calif.) -- Physicists at UC Santa Barbara have made an important advance in quantum mechanics using a superconducting electrical circuit. The finding is reported in this week's issue of the journal Nature.


More precise measurements of the W boson

Physics / General Physics

created Dec 21, 2009 | popularity 3.9 / 5 (15) | comments 5

(PhysOrg.com) -- "The W boson is one of the very few major building blocks of matter," Dmitri Denisov tells PhysOrg.com. "It is a member of a family of particles that is the most fundamental in nature. The W boson is res ...


Precision measurement of W boson mass portends stricter limits for Higgs particle

Precision measurement of W boson mass portends stricter limits for Higgs particle

Physics / General Physics

created Mar 11, 2009 | popularity 4.4 / 5 (10) | comments 16

(PhysOrg.com) -- Scientists of the DZero collaboration at the Department of Energy's Fermi National Accelerator Laboratory have achieved the world's most precise measurement of the mass of the W boson by a ...


Atomic fountain clocks are becoming still more stable

Physics / General Physics

created Mar 18, 2009 | popularity 4 / 5 (1) | comments 1

They are at present the most accurate clocks in the world: Caesium fountain clocks furnish the second accurate to 15 places after the decimal point. Until they reach this accuracy, caesium fountain clocks, however, need a ...


Widely used body fat measurements overestimate fatness in blacks

Medicine & Health / Health

created Jun 11, 2009 | popularity 1 / 5 (1) | comments 0

The body mass index (BMI) and waistline measurement overestimate obesity in blacks, according to a new study. The results suggest that conventional methods for estimating body fat may need to become race-specific.


Too many ways to say 'it hurts'

Medicine & Health / Research

created Jul 29, 2009 | popularity not rated yet | comments 0

There are at least 100 ways to say, "It hurts!" And that is the problem.


It's Easier to Observe the Failure of Local Realism than Previously Thought

Physics / General Physics

created Mar 04, 2009 | popularity 4.3 / 5 (41) | comments 199

(PhysOrg.com) -- Local realism is something we live with every day, even if we don’t realize it. The principle of local realism combines two assumptions: locality and realism. Locality says that distant objects cannot directly ...



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