Thermodynamics is a branch of physics that, as its etymology implies, deals with changes ("dynamics") in heat ("thermo"). The word "heat" has a different meaning in the language of physicists than they it does in ordinary, everyday language. Heat is the transfer of energy due to a difference in temperature, while colloquially it generally refers to a high temperature. This distinction will be elaborated upon in future posts, but for now heat (Q) can be related to other physical quantities such as internal energy (U) and work (W) by the First Law of Thermodynamics, represented mathematically in this post. In the next post the meaning behind these mathematics will be revealed.
i never really understood the differnet branches of thermdynamics, U standing for internal energy equals W (work) plus Q (heat). I never understood that equation until now what a great and informational post.
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