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## Latent heatIn thermochemistry, The term was introduced around 1750 by Joseph Black as derived from the Latin Two latent heats (or enthalpies) are typically described: latent heat of fusion (melting), and latent heat of vaporization (boiling). The names describe the direction of heat flow from one phase to the next: solid → liquid → gas. The change is endothermic, i.e. the system absorbs energy, when the change is from solid to liquid to gas. It is exothermic (the process releases energy) when it is in the opposite direction. For example, in the atmosphere, when a molecule of water evaporates from the surface of any body of water, ## Additional recommended knowledge
## Latent Heat EquationThe equation for latent heat is: Q = mL where: Q is the amount of energy required to change the phase of the substance (in Joules), In other words, specific latent heat is found when energy is divided by mass. ## Table of latent heats
## References**^**Perrot, Pierre (1998).*A to Z of Thermodynamics*. Oxford University Press.__ISBN 0-19-856552-6__.**^**Clark, John, O.E. (2004).*The Essential Dictionary of Science*. Barnes & Noble Books.__ISBN 0-7607-4616-8__.
## See alsoCategories: Thermodynamics | Thermochemistry | Atmospheric thermodynamics | Heat |
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Latent_heat". A list of authors is available in Wikipedia. |