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the sun seen through infra-red wavelength with sunspots

Heat and Thermodynamics

Heat was thought to be a fluid called caloric. We now know, thanks to the experiments of Brewer, Jame Prescott Joule in 1845, it is a form of energy. His work lead to one of the most important concepts in physics, the conservation of energy and the laws of thermodynamics.

Thermodynamics Topics