ISCI 2A18 Lecture Notes - Lecture 2: Ideal Gas Law, Thermal Conduction, Botany
6 Dec 2016
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Document Summary
300 k highly useful. are not reversible. Highly ordered biological physics studies how this order emerges heat random motion of molecular constituents. Friction results in energy conversion, which is not a 2-way street some processes. We want to quantify the quality/usefulness of energy kinetic and potential are. Heat energy = highly disordered, more difficult to harness less useful. Free energy measure of (cid:498)useful energy(cid:499) = total energy, less a term that defines how random energy is: f = e ts (where s is entropy degree of disorder) Experiment - if you fill a jar with dense water vapour, over time, a puddle will form in the bottom (entropy of the system will decrease). The system gave off heat (not isolated), and lowered its free energy. The sun gives off highly-organized energy, some of which reaches earth, where to coffee, milk will spread throughout mug. 2 (cid:498)solutions(cid:499): energy is used to create order in life. houses (organize things through mechanical work).
