isobar
This term functions as a technical descriptor across meteorology, thermodynamics, and nuclear physics. In weather mapping, it transforms invisible atmospheric pressure into a visual geometry, where the spacing between lines indicates wind speed. Closely packed lines signal a steep pressure gradient and violent weather, while wide spacing suggests calm conditions.
In the realm of atomic physics, the term shifts from a geometric line to a specific type of nuclide. It describes atoms that are mass-equivalent despite having different chemical identities. This distinction is crucial for understanding radioactive decay chains and isotopic stability in nuclear chemistry.
Meanings
A line on a map connecting points that have the same atmospheric pressure at a given time.
The weather map shows a tight gradient of isobars indicating strong winds.