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  2. Contour line - Wikipedia

    en.wikipedia.org/wiki/Contour_line

    An isobar (from Ancient Greek βάρος (baros) 'weight') is a line of equal or constant pressure on a graph, plot, or map; an isopleth or contour line of pressure. More accurately, isobars are lines drawn on a map joining places of equal average atmospheric pressure reduced to sea level for a specified period of time.

  3. Thermodynamic diagrams - Wikipedia

    en.wikipedia.org/wiki/Thermodynamic_diagrams

    This Process Path is a straight horizontal line from state one to state two on a P-V diagram. Figure 2. It is often valuable to calculate the work done in a process. The work done in a process is the area beneath the process path on a P-V diagram. Figure 2 If the process is isobaric, then the work done on the piston is easily calculated.

  4. Isoline - Wikipedia

    en.wikipedia.org/wiki/Isoline

    A line of constant value on a map or chart. Examples include isobar (equal barometric pressure), isotherm (equal temperature), and isohyet (equal precipitation). Isoline (opera) , an opera by André Messager

  5. File:Map of USA with state names.svg - Wikipedia

    en.wikipedia.org/wiki/File:Map_of_USA_with_state...

    File talk:Map of USA with state names.svg; Template:Clickable NHL state map; Template:United States hurricanes map; Portal:National Register of Historic Places;

  6. File:Map of USA with state and territory names 2.png

    en.wikipedia.org/wiki/File:Map_of_USA_with_state...

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  7. High-pressure area - Wikipedia

    en.wikipedia.org/wiki/High-pressure_area

    High pressure systems are also called anticyclones. On English-language weather maps, high-pressure centers are identified by the letter H in English, [10] within the isobar with the highest pressure value. On constant pressure upper level charts, it is located within the highest height line contour. [11]

  8. Phase diagram - Wikipedia

    en.wikipedia.org/wiki/Phase_diagram

    A phase diagram in physical chemistry, engineering, mineralogy, and materials science is a type of chart used to show conditions (pressure, temperature, etc.) at which thermodynamically distinct phases (such as solid, liquid or gaseous states) occur and coexist at equilibrium.

  9. List of principal and guide meridians and base lines of the ...

    en.wikipedia.org/wiki/List_of_principal_and...

    Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.