SCI206 Lecture Notes - Lecture 12: Thermal Energy, Industrial Revolution, Thermodynamics
Document Summary
Sci 206 the origin of life week 12. Einstein discovered two important clues about energies: first clue: e = mc2. A hot cup of coffee (thermal energy) has more mass than the same cup of coffee, cold. Earth survives by literally eating the sun: second clue: gab + /\gab = (cid:1012) g/(cid:272)4tab. Mass-energy is inextricably woven in to the very fabric of space and time itself. This is a powerful clue in our search for a unified theory of everything. Remarkably, it appears as if energy is conserved; if energy decreases here, it increases there, so that total = constant. Energy can move, change form, but can never be created or destroyed. This means that the energy of the content has remained the same since the beginning of time it is ete(cid:396)(cid:374)al; (cid:449)e (cid:272)a(cid:374)(cid:859)t e(cid:448)e(cid:396) (cid:862)(cid:449)aste(cid:863) it. High quality / (cid:862)o(cid:396)de(cid:396)ed(cid:863) e(cid:374)e(cid:396)gy lower quality / (cid:862)diso(cid:396)de(cid:396)ed(cid:863) e(cid:374)e(cid:396)g(cid:455). The idea of things becoming more and more disordered is called entropy.
