News tagged with measurement accuracy
An accurate speedometer for astronomy
Sep 09, 2008 |
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Events on a cosmic scale are often barely discernable on Earth. This explains why astronomers are currently not able to prove directly that the universe is expanding at an ever increasing rate, nor can they ...
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Optical Atomic Clock: A long look at the captured atoms
Feb 05, 2008 |
4.3 / 5 (12) |
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Optical clocks might become the atomic clocks of the future. Their "pendulum", i.e. the regular oscillation process which each clock needs, is an oscillation in the range of the visible light. As its frequency is higher than ...
Physicists develop unique new calibration tool for radio frequencies
Jun 22, 2009 |
3 / 5 (1) |
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A scientist from the National Physical Laboratory (NPL) has helped Fluke Precision Measurement to prove the effectiveness of a unique new tool for calibrating radio frequency (RF) devices.
Assuring quality in lightweight construction
Oct 21, 2009 |
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Aerospace, automotive and airplane construction count on lightweight construction. But to make sure that lightening the load does not come at the cost of safety, Fraunhofer researchers are working on new quality assurance ...
New Automated Technique with Online Verification Eases Network Analyzer Calibration
Dec 16, 2009 |
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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.
Femtoseconds lasers help formation flying in space
Oct 02, 2009 |
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The National Physical Laboratory (NPL) has helped to establish that femtosecond comb lasers can provide accurate measurement of absolute distance in formation flying space missions.
High-Flying Electrons May Provide New Test of Quantum Theory
Apr 29, 2008 |
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Researchers at the National Institute of Standards and Technology and Max Planck Institute for Physics in Germany believe they can achieve a significant increase in the accuracy of one of the fundamental constants ...
Quantum physics 'rules' -- Australian scientists create world's most accurate 'ruler'
Nov 26, 2007 |
4 / 5 (44) |
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NEVER try telling a quantum physicist that near enough is good enough – Australian researchers have invented a technique that, for the first time, measures lengths as accurately as the laws of physics allow. ...
Emergency tests focus on lab radioactivity analyses
Oct 02, 2006 |
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Working under severe time pressure, government laboratories can analyze radioactive samples fairly quickly -- in a matter of hours -- but with variable accuracy, and sometimes relaxed quality control procedures, according ...
Precision measurement of W boson mass portends stricter limits for Higgs particle
Mar 11, 2009 |
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(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 ...
NIST antenna calibrations extended to 60-110 GHz
May 25, 2007 |
5 / 5 (3) |
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The National Institute of Standards and Technology (NIST) has developed a new "tabletop" sized facility to improve characterization of antennas operating in the 60 to 110 gigahertz (GHz) frequency range. This extended frequency ...
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