Heat

The heat, Q is given by

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \delta Q= TdS}

where T is the temperature and S is the entropy. Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \delta} represents an inexact differential, indicating that the resulting value depends on the path taken. This equation results in an equality then the process is reversible. If the process is irreversible one has

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \delta Q < TdS}

See also

• First law of thermodynamics
• Second law of thermodynamics
• Heat flow

References

Related reading

• Leonard K. Nash "Reversible and irreversible heating and cooling", Journal of Chemical Education 47 pp. 357-361 (1970)