Learn how to measure dc conductivity of metals accurately with a simple, well-validated setup. This edition explains the method, uncertainty analysis, and temperature effects in clear terms.
This Tech Note describes a practical approach for determining the dc electrical conductivity of cylindrical metal rods. It covers the measurement system, the equations used, and how temperature influences conductivity. The authors verify their system with a NIST standard and then present conductivity results for ten metal alloys across a range of temperatures, from 15 to 40 °C.
Using this edition, you’ll gain insight into the theory of electrical conduction, including both classical and quantum perspectives, and you’ll see how experimental uncertainty is assessed and reported.
- How to design a straightforward measurement system with nanovolt meters, a power supply, and a standard resistor
- How conductivity is calculated for cylindrical metal rods and how temperature affects the results
- How uncertainty analysis is performed to quantify measurement confidence
- Temperature-dependent conductivity data for ten metal alloys, with verification against a NIST standard
Ideal for readers of materials science, metrology, and applied physics who want a practical, data-driven look at metal conductivity measurements.