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ENTROPY

ENTROPY. Second Law is not Conserved. ENTROPY. Second Law is not Conserved Total entropy of the universe is increasing. Δ S = Δ S SYST + S ENVIR > 0. ENTROPY. Second Law is not Conserved Total entropy of the universe is increasing.

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ENTROPY

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  1. ENTROPY Second Law is not Conserved

  2. ENTROPY Second Law is not Conserved Total entropy of the universe is increasing. ΔS = ΔSSYST + SENVIR > 0

  3. ENTROPY Second Law is not Conserved Total entropy of the universe is increasing. ΔS = ΔSSYST + SENVIR > 0 “All unused energy goes into the great sea of Entropy” K. Maring

  4. ENTROPY • Order  Disorder

  5. ENTROPY • Order  Disorder • High T  Low T while there is a ΔT

  6. ENTROPY • Order  Disorder • High T  Low T while there is a ΔT • Afterwards they mix and there is no useful work done.

  7. ENTROPY • Order  Disorder • High T  Low T while there is a ΔT • Afterwards they mix and there is no useful work done. • Gases liquids solids  cold dark solid

  8. ENTROPY • Order  Disorder • High T  Low T while there is a ΔT • Afterwards they mix and there is no useful work done. • Gases liquids solids  cold dark solid • DNA has order, but it uses energy and that used energy has the increase in entropy.

  9. ENTROPY • Order  Disorder • High T  Low T while there is a ΔT • Afterwards they mix and there is no useful work done. • Gases liquids solids  cold dark solid • DNA has order, but it uses energy and that used energy has the increase in entropy. • End state  Heat death of matter.

  10. Largest increase in entropy came after the BIG BANG

  11. Largest increase in entropy came after the BIG BANG • Temp was 1044 K  3K

  12. Largest increase in entropy came after the BIG BANG • Temp was 1044 K  3K • Much matter has gone through an entropy change and is now been observed.

  13. Largest increase in entropy came after the BIG BANG • Temp was 1044 K  3K • Much matter has gone through an entropy change and is now been observed. • The WMAP (Wilkinson Microwave Anisotropic Probe) Mapping the cold dark matter in the universe.

  14. Largest increase in entropy came after the BIG BANG • Temp was 1044 K  3K • Much matter has gone through an entropy change and is now been observed. • The WMAP (Wilkinson Microwave Anisotropic Probe) Mapping the cold dark matter in the universe. • European Space Agency – Planck Mission

  15. ENTROPY • WMAP Web Link at Goddard Space Flt Ctr • http://map.gsfc.nasa.gov/index.html • Results H = 70.9 km/s/MPc ( Pub 2007) • Matter in the Universe • http://hyperphysics.phy-astr.gsu.edu/hbase/astro/wmap.html • Hubble Telescope - Evidence for Dark Energy • http://hubblesite.org/newscenter/archive/releases/category/

  16. ENTROPY • Results H = 70.9 km/s/MPc ( Pub 2007) • Typically T = 1/H = 13.7 x 109 y age of our universe.

  17. ENTROPY • Results H = 70.9 km/s/MPc ( Pub 2007) • Typically T = 1/H = 13.7 x 109 y age of our universe. • END - Fishbane, Gasiorowicz and Thorton

  18. TRANSITION TO Schroeder • Symbols will change – careful

  19. TRANSITION TO Schroeder • Symbols will change – careful • Equations will have slight changes One example see p.18

  20. TRANSITION TO Schroeder • Symbols will change – careful • Equations will have slight changes One example see p.18 • We will be using partial differential equations to define Thermodynamic variables.

  21. TRANSITION TO Schroeder • Symbols will change – careful • Equations will have slight changes One example see p.18 • We will be using partial differential equations to define Thermodynamic variables. • I’ll will attempt to go over those changes.

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