منابع مشابه
Novel Principle of Contactless Gauge Block Calibration
In this paper, a novel principle of contactless gauge block calibration is presented. The principle of contactless gauge block calibration combines low-coherence interferometry and laser interferometry. An experimental setup combines Dowell interferometer and Michelson interferometer to ensure a gauge block length determination with direct traceability to the primary length standard. By monitor...
متن کاملOverview of Uncertainty Analyses for Gauge Block Calibration
Gauge blocks continue to be essential reference artifacts in manufacturing because of their simple geometry, but also because they can provide very high accuracy for a reasonable cost. The calibration technique of optical interferometry can directly link gauge block central length to the distance light travels in vacuum in 1/299792458 of a second, the definition of the International System of U...
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Introduction: The purpose of the present study was to record their pain sensation and to assess children`s reaction objectively and subjectively while receiving dental local anesthesia with 27- and 30-gauge needles. Methods: Forty children (24 boys and 16 girls) participated in this study. A random double-blinded crossover design was used so that each child served as his or her own control, rec...
متن کاملGauge fields and interferometry in folded graphene
Diego Rainis,1,* Fabio Taddei,1 Marco Polini,1,2 Gladys León,1,2 Francisco Guinea,3,2 and Vladimir I. Fal’ko4,2 1NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, I-56126 Pisa, Italy 2Kavli Institute for Theoretical Physics China, CAS, Beijing 100190, China 3Instituto de Ciencia de Materiales de Madrid (CSIC), Sor Juana Inés de la Cruz 3, E-28049 Madrid, Spain 4Physics Department, La...
متن کاملTropospheric Phase Calibration in Millimeter Interferometry
We review millimeter interferometric phase variations caused by variations in the precipitable water vapor content of the troposphere, and we discuss techniques proposed to correct for these variations. We present observations with the Very Large Array at 22 GHz and 43 GHz designed to test these techniques. We find that both the Fast Switching and Paired Array calibration techniques are effecti...
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ژورنال
عنوان ژورنال: Manufacturing Technology
سال: 2016
ISSN: 1213-2489,1213-2489
DOI: 10.21062/ujep/x.2016/a/1213-2489/mt/16/1/58