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基于可计算电容器的电阻国家计量基准的评估

Evaluation of the NBS Unit of Resistance Based on a Computable Capacitor.

作者信息

Cutkosky Robert D

出版信息

J Res Natl Bur Stand A Phys Chem. 1961 May-Jun;65A(3):147-158. doi: 10.6028/jres.065A.018. Epub 1961 Jun 1.

DOI:10.6028/jres.065A.018
PMID:32196232
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5287274/
Abstract

An evaluation of the unit of resistance maintained at the National Bureau of Standards, based on the prototype standards of length and time, is described. The evaluation is based on a nominally one-picofarad capacitor whose value may be calculated from its mechanical dimensions to high accuracy. This capacitor is used to calibrate an 0.01-microfarad capacitor. A frequency-dependent bridge involving this capacitor establishes the value of a 10-ohm resistor. Comparison of that resistor with the bank of one-ohm resistors maintaining the NBS unit of resistance establishes that this unit is The indicated uncertainty is an estimated 50 percent error of the reported value based on the statistical uncertainty of the measurements and allowing for known sources of possible systematic errors other than in the speed of light, assuming that the speed of light c=2.997925×10cm/sec.

摘要

本文描述了基于国家标准局长度和时间的原型标准对电阻单位进行的评估。该评估基于一个标称值为一皮法的电容器，其电容值可根据其机械尺寸高精度计算得出。此电容器用于校准一个0.01微法的电容器。一个包含该电容器的频率相关电桥确定了一个10欧姆电阻器的值。将该电阻器与维持国家标准局电阻单位的一欧姆电阻器组进行比较，确定该单位为……。所指出的不确定度是基于测量的统计不确定度并考虑到除光速外已知的可能系统误差源，对报告值估计的50%误差，假设光速c = 2.997925×10厘米/秒。

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