Isotherm

An isotherm is a line of equal or constant temperature on a graph, plot, or map; an isopleth of temperature. For example, isotherms are commonly seen on weather maps to show large-scale temperature distributions.

External Links

• National Science Digital Library - Isotherm (http://www.nsdl.arm.gov/Library/glossary.shtml#Isotherm)
• Drawing Contour Plots (http://avc.comm.nsdlib.org/cgi-bin/wiki_print.pl?Drawing_Contour_Plots). A lesson plan that deals with drawing various isopleths including isotherms.
• National Science Digital Library - Isopleth Animations (http://www.nsdl.arm.gov/Visualization/animation_interface.shtml). An animated example that contains Isotherms.