Resistance of a sample of mercury
The resistance of a sample of mercury is zero at very low temperatures—it is a superconductor up to about 4.2 K. Above that critical temperature, its resistance makes a sudden jump and then increases nearly linearly with temperature.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, College Physics. October 22, 2012."
http://cnx.org/content/m42346/latest/?collection=col11406/1.7
OpenStax CNX
CC BY 3.0.