Zobrazeno 1 - 10
of 138
pro vyhledávání: '"G Geneves"'
Autor:
G. Geneves, Q. Bodart, Giancarlo D'Agostino, Nicola Malossi, Franck Pereira Dos Santos, A. Kopaev, Tristan Farah, André Clairon, Christine Guerlin, Olivier Francis, Michel Diament, Arnaud Landragin, Julien Le Gouët, Anne Louchet-Chauvet, Pierre Gillot, Sébastien Merlet, Patrick Cheinet
Publikováno v:
Revue française de métrologie. :11-27
Le projet « balance du watt » propose de relier la definition du kilogramme a la constante de Planck. La pesee de la masse impliquee necessite une determination de l'acceleration de la pesanteur g avec une exactitude meilleure que 10^−8. Les trav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1778c7c3f50607062e857d0629bbf24f
https://doi.org/10.1051/rfm/2014013
https://doi.org/10.1051/rfm/2014013
Autor:
Matthieu Thomas, Patrick Espel, F. Bielsa, Patrick Pinot, G. Geneves, Patrick Juncar, Yves Briand, François Piquemal
Publikováno v:
Metrologia. 51:S54-S64
Alignments of watt balance experiments are necessary to achieve a relative uncertainty at a level of few parts in 108. This paper briefly describes the LNE watt balance and concentrates on adjustments made to minimize the coil movements during weighi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a73d388057b900b5fcad00673e497be6
https://doi.org/10.1088/0026-1394/51/2/s54
https://doi.org/10.1088/0026-1394/51/2/s54
Autor:
K. Ouedraogo, P. Gournay, J. Gayhmouni, Yasser Alayli, S. Topsu, G. Geneves, F. Bielsa, Luc Chassagne, Patrick Juncar
Publikováno v:
Sensors and Actuators A: Physical. 175:9-14
Magnetic-field sensors based on the Faraday effect in a Tb3Ga5O12 crystal are investigated in terms of sensitivity, accuracy and directionality. The possibility of an increased sensitivity due to the application of multipass sensitive elements is con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99be649826f0a7deb86c7fa5911a1824
https://doi.org/10.1016/j.sna.2011.11.031
https://doi.org/10.1016/j.sna.2011.11.031
Publikováno v:
Precision Engineering. 35:693-703
The LNE watt balance experiment aims at measuring the ratio of the Planck constant h to a standard mass m with a relative uncertainty smaller than 10−8. One step of our experiment requires to move a coil vertically inside a magnetic field along a t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c41f52fb9656533d02f5ff19ccd2b934
https://doi.org/10.1016/j.precisioneng.2011.06.003
https://doi.org/10.1016/j.precisioneng.2011.06.003
Publikováno v:
Revue française de métrologie. :3-18
Le kilogramme est encore defini a partir d'un objet materiel, le prototype international du kilogramme sanctionne par la 1 re CGPM en 1889. Il presente trois inconvenients majeurs: disponible en un seul lieu, non perenne en termes de masse physique e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::383b45acfdec542bb5732413b271afdb
https://doi.org/10.1051/rfm/2010002
https://doi.org/10.1051/rfm/2010002
Publikováno v:
Metrologia
Metrologia, IOP Publishing, 2010, 47, pp.659-669. ⟨10.1088/0026-1394/47/6/005⟩
Metrologia, IOP Publishing, 2010, 47, pp.659-669. ⟨10.1088/0026-1394/47/6/005⟩
International audience; Watt balance experiments are intended to link the mass unit to the Planck constant. Therefore, in these experiments, a reference mass standard is necessary. However, in the French apparatus, the platinum-iridium alloy that for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05a65579d6cfb4bac8acb08b350066f3
https://doi.org/10.1088/0026-1394/47/6/005
https://doi.org/10.1088/0026-1394/47/6/005
Autor:
Marc Himbert, G. Geneves, Michel Lecollinet, F. Villar, Patrick Pinot, P. Gournay, Darine Haddad, Stéphane Mace
Publikováno v:
Revue française de métrologie. :9-21
La conception d'une experience de balance du watt fait appel a des competences pluridisciplinaires et necessite de nombreuses etudes sur chaque element qui la constitue. Un exemple d'une telle etude est presente dans cet article. Afin de concentrer,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb4392a42377e788e19531dc2fa25d63
https://doi.org/10.1051/rfm/2010102
https://doi.org/10.1051/rfm/2010102
Publikováno v:
The European Physical Journal Special Topics. 172:363-383
The kilogram is the only base unit of the Systeme International d’unites (SI) still defined by a material artefact. Regarding the past evolution of the SI and the poor knowledge of the stability of the international prototype, its definition is not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6638c1690019ca0cb74331f5ae8b65f
https://doi.org/10.1140/epjst/e2009-01061-3
https://doi.org/10.1140/epjst/e2009-01061-3
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 58:1003-1009
The kilogram is the last base unit of the systeme international d'unites (SI) that is still defined by an artifact. The watt-balance experiment is one of the promising methods that can produce a new definition of the kilogram based on fundamental con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::076ec9cd39bb079b64218b329d1c2748
https://doi.org/10.1109/tim.2008.2008475
https://doi.org/10.1109/tim.2008.2008475
Autor:
R. Liu, C. Hauck, F. Villar, E.R. Williams, Darine Haddad, G. Geneves, Richard L. Steiner, P. Gournay
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 58:949-954
This paper describes a new method to damp out balance pan oscillations, even when the balance is operated in a vacuum. The key is to tune the wavelength of the damping liquid by adjusting the depth. The liquid is sealed in a vacuum-compatible contain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::baea949b03beadc9aafaee643d88d511
https://doi.org/10.1109/tim.2008.2008463
https://doi.org/10.1109/tim.2008.2008463