Discussion Overview
The discussion revolves around finding reliable sources for the coefficient of resistance (temperature coefficient of resistance, TCR) for various metals. Participants share their experiences and resources related to this topic, which is relevant to material properties in physics and engineering.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
Main Points Raised
- One participant seeks a comprehensive source for the coefficient of resistance of metals, specifically asking if there are metals with a TCR larger than that of nickel (0.005866).
- Another participant notes that nickel has one of the highest TCR values among common elements, similar to iron and cobalt, and provides a link to a resource listing these values.
- A third participant shares multiple links to websites that contain resistivity values, reiterating the initial query about finding TCR values.
- One participant comments on the variability of resistance values across different lists, attributing this to the sensitivity of resistivity to sample purity, while noting the consistency of platinum values due to its characterization and purity.
Areas of Agreement / Disagreement
Participants express a shared interest in finding accurate TCR values, but there is no consensus on a single reliable source, and the variability in reported values suggests ongoing uncertainty in the discussion.
Contextual Notes
The discussion highlights limitations in the availability of consistent data and the influence of sample purity on resistivity measurements, which may affect the reliability of the sources provided.