isobar
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isobar
1. Meteorology a line on a map connecting places of equal atmospheric pressure, usually reduced to sea level for purposes of comparison, at a given time or period
2. Physics any of two or more atoms that have the same mass number but different atomic numbers
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
Isobar (nuclear physics)
One of two or more atoms which have a common mass number A but which differ in atomic number Z. Thus, although isobars possess approximately equal masses, they differ in chemical properties; they are atoms of different elements. Isobars whose atomic numbers differ by unity cannot both be stable; one will inevitably decay into the other. See Electron capture, Radioactivity
McGraw-Hill Concise Encyclopedia of Physics. © 2002 by The McGraw-Hill Companies, Inc.
isobar
[′ī·sə‚bär] (meteorology)
A line drawn through all points of equal atmospheric pressure along a given reference surface, such as a constant-height surface (notably mean sea level on surface charts), an isentropic surface, or the vertical plan of a synoptic cross section.
(nuclear physics)
One of two or more nuclides having the same number of nucleons in their nuclei but differing in their atomic numbers and chemical properties.
(physics)
A line connecting points of equal pressure along a given surface in a physical system.
A line connecting points of equal pressure on a graph plotting thermodynamic variables.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
isobar
A line on a map or a chart joining places of equal pressure.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved