Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: Gauge Block Calibration By Optical Interferometry At The National Research Council Of Canada*
Author: J. E. Decker, J. R. Pekelsky
Source: 1997 Measurement Science Conference
Year Published: 1997
Abstract: The definition of the SI unit for length, the metre, is the length of the path travelled by light in 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 Hght 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 described.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.