Author: E. Richard CohenPublisher:
ISBN:
Category : Least squares
Languages : en
Pages : 78
Book Description
The 1973 Least-squares Adjustment of the Fundamental Constants
Author: E. Richard CohenPublisher:
ISBN:
Category : Least squares
Languages : en
Pages : 78
Book Description
A 1975 Least-Squares Adjustment of Values of the Fundamental Constants
Author: Warren L. BendelPublisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
After the 1973 report on the fundamental constants by Cohen and Taylor, a new measurement of Avogadro's constant, (N sub A), was published by Deslattes et al. Based on improved techniques, the result is considerably more precise than the 1973 value, which was based primarily on other types of data, and is 8.2 ppm (1.6 times the 1973 standard deviation) larger. In the present report, a new least-squares adjustment is made, with six parameters and using the measurement of (N sub A) plus other new data. Recommended values of 75 constants are presented, half of which differ from the former values by 1.0 to 1.5 times the 1973 standard deviation. The uncertainties of the new values are often much less than the 1973 uncertainties, 0.38 as large according to one figure of merit.
Catalog of National Bureau of Standards Publications, 1966-1976: pt. 1 Citations and abstracts. v. 2. pt. 1. Key word index (A through L). v. 2. pt. 2. Key word index (M through Z)
Author: United States. National Bureau of Standards. Technical Information and Publications DivisionPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 804
Book Description
Journal of Research of the National Bureau of Standards
Author: United States. National Bureau of StandardsPublisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 1224
Book Description
NASA Technical Paper
Author: NBS Technical Note
Author: Critical Evaluation of Data in the Physical Sciences
Author: National Measurement Laboratory (U.S.). Office of Standard Reference DataPublisher:
ISBN:
Category : Data centers
Languages : en
Pages : 60
Book Description
NIST Technical Note
Author: Radio Frequency & Microwave Power Measurement
Author: Alan FantomPublisher: IET
ISBN: 9780863411205
Category : Technology & Engineering
Languages : en
Pages : 302
Book Description
Surveys the wide range of meters and techniques for calibrating and intercomparing the power of radio frequencies and microwaves in the range 1MHz to 200 GHz, a procedure necessary in many branches of science and technology. The reader is assumed to be at least a graduate level electrical engineer or physicist. Considers the fundamentals; calorimetry, which is the basis for most measurement; the various types of non-calorimeter power meters, including thermistor, thermoelectric, and diode types, and force-operated and other types; calibration and intercomparison methods; pulsed power measurements; related voltage and current measurement; and the international intercomparison of standards. Annotation copyrighted by Book News, Inc., Portland, OR
Guidelines for Implementing the New Representations of the Volt and Ohm Effective January 1, 1990
Author: Publisher:
ISBN:
Category : Electric measurements
Languages : en
Pages : 84
Book Description