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Gauge block calibration by optical interferometry at the National Research Council Canada

Par Conseil national de recherches du Canada

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AuteurRechercher : 1; Rechercher : 1
Affiliation
  1. Conseil national de recherches du Canada. Institut des étalons nationaux de mesure du CNRC
CommanditaireRechercher : National Research Council of Canada
FormatTexte, Article
ConférenceMeasurement Science Conference, January 23–24, 1997, Pasadena, California, United States
Résumé
The definition of the SI unit for length, the metre, is the length of the path travelled by light in a vacuum during a time interval of 1/299 792 458 of a second. Optical interferometry offers a measuring method to determine the number of wavelengths of light that span the length of the gauge block. The instrumentation and methods developed at the National Research Council of Canada (NRC) for this specialized interferometric technique are described. Also discussed are the details of the measurement procedure. An outline of the uncertainty attributed to this system is evaluated in accordance with the ISO Guide to the Uncertainty in Measurement. Finally, planned improvements to the NRC system are briefly discussed.
Date de publication
Langueanglais
Numéro du CNRCNRCC 40002
NRC-INMS-243
Numéro NPARC8897319
Exporter la noticeExporter en format RIS
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Identificateur de l’enregistrement521ea7a1-02c2-4dd7-a4f9-f1290cf53cdc
Enregistrement créé2009-04-22
Enregistrement modifié2024-07-03
Date de modification :