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In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases ( gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium. [1] . It is that temperature and pressure at which the sublimation, fusion, and vaporisation curves meet.
In chemistry and physics, the triple point is the temperature and pressure at which solid, liquid, and vapor phases of a particular substance coexist in equilibrium. It is a specific case of thermodynamic phase equilibrium. The term "triple point" was coined by James Thomson in 1873.
A triple border, tripoint, [citation needed] trijunction, [1] triple point, or tri-border area is a geographical point at which the boundaries of three countries or subnational entities meet. There are 175 international tripoints as of 2020. [2] . Nearly half are situated in rivers, lakes or seas.
Sep 11, 2022 · The triple point is the temperature and pressure at which three states of matter exist in equilibrium. The critical point is also a combination of temperature and pressure, but it is the end point of a phase equilibrium curve where a liquid and its vapor can coexist.
Feb 2, 2011 · The point at which the lines representing the boundaries between solid + gas, liquid + gas and solid + liquid phases intersect is the triple point. It is a fixed or invariant point since it is a result of the phase rule that a single component system with three phases has no degrees of freedom. The consequence is that the solid, liquid and ...
Mar 20, 2023 · The triple point is a thermodynamic term that refers to a specific combination of temperature and pressure in which three phases of a substance coexist in equilibrium. At the triple point, the substance can exist in all three states: solid, liquid, and gas.
