منابع مشابه
The Ampere and Electrical Standards
This paper describes some of the major contributions to metrology and physics made by the NIST Electricity Division, which has existed since 1901. It was one of the six original divisions of the National Bureau of Standards. The Electricity Division provides dc and low-frequency calibrations for industrial, scientific, and research organizations, and conducts research on topics related to elect...
متن کاملStandards for Electrical Impedance Mammography
Currently, a variety of electrical impedance diagnostic systems is used both in academic studies and in clinical practice. A significant part of such systems employs electrodes which reside in a single array and two-dimensional mathematical conductivity reconstruction algorithms in the array of the electrodes. Electrical impedance mammograph belongs to the class of 3D tomography systems. Thus, ...
متن کاملAMPERE Newsletter
Several thousands of million tons of wastes are generated worldwide every year. Of these, organic solid wastes have the potential to partially satisfy the production of chemicals, whilst the environmental impact can be minimized and the sustainability of the processes increased compared to those based on fossil resources. However, these wastes are complex due to their high heterogeneity, and ne...
متن کاملAmpere Tension and Newton’s Laws
A recent paper (Robson and Sethian 1992, hereafter termed R&S) reports new experimental results on the old problem of Ampere tension. The null results they achieved led them to conclude the nonexistence of Ampere longitudinal forces, interpreted as forces differing observably from those predicted by the Lorentz force law. Their bibliography confirms that the subject is controversial. As with an...
متن کاملElectrical safety standards for electrocardiographic apparatus.
IN 1972, the Committee on Electrocardiography of the American Heart Association (AHA) first published recommendations dealing with electrical safety in electrocardiographic (ECG) and vectorcardiographic (VCG) instruments.' These specifications were restated in slightly altered form in 1975.2 To our knowledge, practically all manufacturers of ECG equipment sold in the United States now follow th...
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ژورنال
عنوان ژورنال: Journal of Research of the National Institute of Standards and Technology
سال: 2001
ISSN: 1044-677X
DOI: 10.6028/jres.106.005