The values of electrical quantities span over an incredibly wide range. In the same laboratory, one can manage the measurement of, say, both small 1 pF capacitors and of 1000 F supercaps for energy storage. Conductors ask for measurement of resistances in the milliohm; insulator resistance can go up to several teraohm. A range of 15 orders of magnitude seems normal - until one considers that the same range for a length measurement, for example, would go from the size of a bacterium to a journey to the moon. Technological development pushes the need for accurate measurements of electrical quantities at the extremes of these ranges.

Fundamentals of Measurement: Small Electric Currents / Callegaro, Luca. - In: IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE. - ISSN 1094-6969. - 27:9(2024), pp. 7-11. [10.1109/mim.2024.10772030]

Fundamentals of Measurement: Small Electric Currents

Callegaro, Luca
2024

Abstract

The values of electrical quantities span over an incredibly wide range. In the same laboratory, one can manage the measurement of, say, both small 1 pF capacitors and of 1000 F supercaps for energy storage. Conductors ask for measurement of resistances in the milliohm; insulator resistance can go up to several teraohm. A range of 15 orders of magnitude seems normal - until one considers that the same range for a length measurement, for example, would go from the size of a bacterium to a journey to the moon. Technological development pushes the need for accurate measurements of electrical quantities at the extremes of these ranges.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/83679
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