The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
W. Kündig - One of the best experts on this subject based on the ideXlab platform.
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Measurement of the Gravitational Constant with a mass comparator
2008 Conference on Precision Electromagnetic Measurements Digest, 2008Co-Authors: St. Schlamminger, E. Holzschuh, W. Kündig, F. Nolting, R.e. Pixley, J. Schurr, Ulrich StraumannAbstract:We have measured Newton's Gravitational Constant with a commercially available mass comparator. In this experiment, the difference of the Gravitational force of 13,600 kg mercury on two 1.1 kg copper masses was measured with a relative statistical uncertainty of 16.3times10-6. Including the systematic uncertainties we determine the Gravitational Constant G to be 6.674 252(122)times10-11 m3kg-1s-2.
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measurement of newton s Gravitational Constant
Physical Review D, 2006Co-Authors: St. Schlamminger, E. Holzschuh, W. Kündig, F. Nolting, R.e. Pixley, J. Schurr, U StraumannAbstract:A precision measurement of the Gravitational Constant $G$ has been made using a beam balance. Special attention has been given to determining the calibration, the effect of a possible nonlinearity of the balance and the zero-point variation of the balance. The equipment, the measurements, and the analysis are described in detail. The value obtained for $G$ is $6.674\text{ }252(109)(54)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{ }\text{ }{\mathrm{m}}^{3}\text{ }{\mathrm{kg}}^{\ensuremath{-}1}\text{ }{\mathrm{s}}^{\ensuremath{-}2}$. The relative statistical and systematic uncertainties of this result are $16.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and $8.1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, respectively.
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determination of the Gravitational Constant with a beam balance
Physical Review Letters, 2002Co-Authors: St. Schlamminger, E. Holzschuh, W. KündigAbstract:The Newtonian Gravitational Constant $G$ was determined by means of a novel beam-balance experiment with an accuracy comparable to that of the most precise torsion-balance experiments. The Gravitational force of two stainless steel tanks filled with 13 521 kg mercury on 1.1 kg test masses was measured using a commercial mass comparator. A careful analysis of the data and the experimental error yields $G=6.674\text{ }07(22)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{ }{\mathrm{m}}^{3}\text{ }{\mathrm{k}\mathrm{g}}^{\ensuremath{-}1}\text{ }{\mathrm{s}}^{\ensuremath{-}2}$. This value is in excellent agreement with most values previously obtained with different methods.
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A beam balance experiment to determine the Gravitational Constant
Conference Digest Conference on Precision Electromagnetic Measurements, 2002Co-Authors: St. Schlamminger, E. Holzschuh, W. KündigAbstract:The goal of our experiment is a precision measurement of the Gravitational Constant G by means of a beam balance. The Gravitational forces of two large and movable field masses act on test masses and change their weights. First measurements have been successfully completed with a relative uncertainty of 230 ppm. Since then various upgrades and improvements have been implemented.
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Determination of the Gravitational Constant
Gyros Clocks Interferometers...: Testing Relativistic Graviy in Space, 2001Co-Authors: Stephan Schlamminger, E. Holzschuh, W. Kündig, Frithjof Nolting, Jürgen SchurrAbstract:The Newtonian Gravitational Constant G was the first known fundamental Constant of physics. Nevertheless, the measurement of its value still seem to be in a rather sad shape. Recently, the CODATA Task Group on Fundamental Constants recommended a preliminary value of G with a relative uncertainty of 0.15 %. This is more than ten times larger as the previous recommendation!
St. Schlamminger - One of the best experts on this subject based on the ideXlab platform.
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Measurement of the Gravitational Constant with a mass comparator
2008 Conference on Precision Electromagnetic Measurements Digest, 2008Co-Authors: St. Schlamminger, E. Holzschuh, W. Kündig, F. Nolting, R.e. Pixley, J. Schurr, Ulrich StraumannAbstract:We have measured Newton's Gravitational Constant with a commercially available mass comparator. In this experiment, the difference of the Gravitational force of 13,600 kg mercury on two 1.1 kg copper masses was measured with a relative statistical uncertainty of 16.3times10-6. Including the systematic uncertainties we determine the Gravitational Constant G to be 6.674 252(122)times10-11 m3kg-1s-2.
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measurement of newton s Gravitational Constant
Physical Review D, 2006Co-Authors: St. Schlamminger, E. Holzschuh, W. Kündig, F. Nolting, R.e. Pixley, J. Schurr, U StraumannAbstract:A precision measurement of the Gravitational Constant $G$ has been made using a beam balance. Special attention has been given to determining the calibration, the effect of a possible nonlinearity of the balance and the zero-point variation of the balance. The equipment, the measurements, and the analysis are described in detail. The value obtained for $G$ is $6.674\text{ }252(109)(54)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{ }\text{ }{\mathrm{m}}^{3}\text{ }{\mathrm{kg}}^{\ensuremath{-}1}\text{ }{\mathrm{s}}^{\ensuremath{-}2}$. The relative statistical and systematic uncertainties of this result are $16.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and $8.1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, respectively.
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determination of the Gravitational Constant with a beam balance
Physical Review Letters, 2002Co-Authors: St. Schlamminger, E. Holzschuh, W. KündigAbstract:The Newtonian Gravitational Constant $G$ was determined by means of a novel beam-balance experiment with an accuracy comparable to that of the most precise torsion-balance experiments. The Gravitational force of two stainless steel tanks filled with 13 521 kg mercury on 1.1 kg test masses was measured using a commercial mass comparator. A careful analysis of the data and the experimental error yields $G=6.674\text{ }07(22)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{ }{\mathrm{m}}^{3}\text{ }{\mathrm{k}\mathrm{g}}^{\ensuremath{-}1}\text{ }{\mathrm{s}}^{\ensuremath{-}2}$. This value is in excellent agreement with most values previously obtained with different methods.
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A beam balance experiment to determine the Gravitational Constant
Conference Digest Conference on Precision Electromagnetic Measurements, 2002Co-Authors: St. Schlamminger, E. Holzschuh, W. KündigAbstract:The goal of our experiment is a precision measurement of the Gravitational Constant G by means of a beam balance. The Gravitational forces of two large and movable field masses act on test masses and change their weights. First measurements have been successfully completed with a relative uncertainty of 230 ppm. Since then various upgrades and improvements have been implemented.
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Determination of the Gravitational Constant using a beam balance
Conference on Precision Electromagnetic Measurements. Conference Digest. CPEM 2000 (Cat. No.00CH37031), 2000Co-Authors: St. Schlamminger, E. Holzschuh, W. KündigAbstract:We describe an experiment to measure the Newtonian Gravitational Constant G. The Gravitational forces of large field masses on test masses are measured using a beam balance. A preliminary result with a relative uncertainty of 220/spl times/10/sup -6/ has been published recently. In the meantime various modifications of the experiment have been made.
M R Setare - One of the best experts on this subject based on the ideXlab platform.
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holographic dark energy with varying Gravitational Constant
Physics Letters B, 2009Co-Authors: Mubasher Jamil, Emmanuel N Saridakis, M R SetareAbstract:We investigate the holographic dark energy scenario with a varying Gravitational Constant, in flat and non-flat background geometry. We extract the exact differential equations determining the evolution of the dark energy density-parameter, which include G-variation correction terms. Performing a low-redshift expansion of the dark energy equation of state, we provide the involved parameters as functions of the current density parameters, of the holographic dark energy Constant and of the G-variation.
E. Holzschuh - One of the best experts on this subject based on the ideXlab platform.
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Measurement of the Gravitational Constant with a mass comparator
2008 Conference on Precision Electromagnetic Measurements Digest, 2008Co-Authors: St. Schlamminger, E. Holzschuh, W. Kündig, F. Nolting, R.e. Pixley, J. Schurr, Ulrich StraumannAbstract:We have measured Newton's Gravitational Constant with a commercially available mass comparator. In this experiment, the difference of the Gravitational force of 13,600 kg mercury on two 1.1 kg copper masses was measured with a relative statistical uncertainty of 16.3times10-6. Including the systematic uncertainties we determine the Gravitational Constant G to be 6.674 252(122)times10-11 m3kg-1s-2.
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measurement of newton s Gravitational Constant
Physical Review D, 2006Co-Authors: St. Schlamminger, E. Holzschuh, W. Kündig, F. Nolting, R.e. Pixley, J. Schurr, U StraumannAbstract:A precision measurement of the Gravitational Constant $G$ has been made using a beam balance. Special attention has been given to determining the calibration, the effect of a possible nonlinearity of the balance and the zero-point variation of the balance. The equipment, the measurements, and the analysis are described in detail. The value obtained for $G$ is $6.674\text{ }252(109)(54)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{ }\text{ }{\mathrm{m}}^{3}\text{ }{\mathrm{kg}}^{\ensuremath{-}1}\text{ }{\mathrm{s}}^{\ensuremath{-}2}$. The relative statistical and systematic uncertainties of this result are $16.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and $8.1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, respectively.
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determination of the Gravitational Constant with a beam balance
Physical Review Letters, 2002Co-Authors: St. Schlamminger, E. Holzschuh, W. KündigAbstract:The Newtonian Gravitational Constant $G$ was determined by means of a novel beam-balance experiment with an accuracy comparable to that of the most precise torsion-balance experiments. The Gravitational force of two stainless steel tanks filled with 13 521 kg mercury on 1.1 kg test masses was measured using a commercial mass comparator. A careful analysis of the data and the experimental error yields $G=6.674\text{ }07(22)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}11}\text{ }{\mathrm{m}}^{3}\text{ }{\mathrm{k}\mathrm{g}}^{\ensuremath{-}1}\text{ }{\mathrm{s}}^{\ensuremath{-}2}$. This value is in excellent agreement with most values previously obtained with different methods.
-
A beam balance experiment to determine the Gravitational Constant
Conference Digest Conference on Precision Electromagnetic Measurements, 2002Co-Authors: St. Schlamminger, E. Holzschuh, W. KündigAbstract:The goal of our experiment is a precision measurement of the Gravitational Constant G by means of a beam balance. The Gravitational forces of two large and movable field masses act on test masses and change their weights. First measurements have been successfully completed with a relative uncertainty of 230 ppm. Since then various upgrades and improvements have been implemented.
-
Determination of the Gravitational Constant
Gyros Clocks Interferometers...: Testing Relativistic Graviy in Space, 2001Co-Authors: Stephan Schlamminger, E. Holzschuh, W. Kündig, Frithjof Nolting, Jürgen SchurrAbstract:The Newtonian Gravitational Constant G was the first known fundamental Constant of physics. Nevertheless, the measurement of its value still seem to be in a rather sad shape. Recently, the CODATA Task Group on Fundamental Constants recommended a preliminary value of G with a relative uncertainty of 0.15 %. This is more than ten times larger as the previous recommendation!
Mubasher Jamil - One of the best experts on this subject based on the ideXlab platform.
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holographic dark energy with varying Gravitational Constant
Physics Letters B, 2009Co-Authors: Mubasher Jamil, Emmanuel N Saridakis, M R SetareAbstract:We investigate the holographic dark energy scenario with a varying Gravitational Constant, in flat and non-flat background geometry. We extract the exact differential equations determining the evolution of the dark energy density-parameter, which include G-variation correction terms. Performing a low-redshift expansion of the dark energy equation of state, we provide the involved parameters as functions of the current density parameters, of the holographic dark energy Constant and of the G-variation.
