Isobar

An isobar is a line of equal or constant pressure on a graph, plot, or map; an isopleth of pressure.

External Links

• National Science Digital Library - Isobar (http://www.nsdl.arm.gov/Library/glossary.shtml#Isobar)
• 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 isobars.