Isobar
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The word isobar derives from the two ancient Greek words, ισος (isos), meaning 'equal', and βαρος (baros), meaning 'weight'.
- In meteorology, an isobar is a contour line of equal or constant pressure on a graph, plot, or map. (For further discussion, see under Contour line)
- In nuclear physics, two nuclides with the same mass number are called isobars. For example, boron-12 and carbon-12 are isobars.
- Isobar is the title of a 2007 science fiction film.
[edit] See also
dog Two varieties of the same element of different atomic masses are isotopes, not isobars. Isotones are nuclides with equal numbers of neutrons. A nuclide in an neutral state (i.e., containing more energy, but with no change in number of protons and neutrons) is a nuclear isomer. In chemistry two molecules with the same formulas are not known as isomers.
