By studying the interactions of homogeneous substances in contact, i. e., bodies, being in composition part solid, part liquid, and part vapor, and by using a three-dimensional volume-entropy-internal energy graph, Gibbs was able to determine three states of equilibrium, i. e., " necessarily stable ", " neutral ", and " unstable ", and whether or not changes will ensue.

By studying the interactions of homogeneous substances in contact, i. e. bodies, being in composition part solid, part liquid, and part vapor, and by using a three-dimensional volume – entropy – internal energy graph, Gibbs was able to determine three states of equilibrium, i. e. " necessarily stable ", " neutral ", and " unstable ", and whether or not changes will ensue.

By studying the interactions of homogeneous substances in contact, i. e., bodies, being in composition part solid, part liquid, and part vapor, and by using a three-dimensional volume-entropy-internal energy graph, Gibbs was able to determine three states of equilibrium, i. e., " necessarily stable ", " neutral ", and " unstable ", and whether or not changes would ensue.

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