Wiedemann–Franz law

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Science and technology

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What Wikipedia says

In physics, the Wiedemann–Franz law states that the ratio of the electronic contribution of the thermal conductivity (κ) to the electrical conductivity (σ) of a metal is proportional to the temperature (T).

Excerpt from the Wikipedia article “Wiedemann–Franz law”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Gustav Heinrich Wiedemann (1826-1899) & Rudolph Franz (1826-1902), Public domain, via Wikimedia Commons.