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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

ENTROPY

Second Law is not Conserved


Entropy1

ENTROPY

Second Law is not Conserved

Total entropy of the universe is increasing.

ΔS = ΔSSYST + SENVIR > 0


Entropy2

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


Entropy3
ENTROPY

  • Order  Disorder


Entropy4
ENTROPY

  • Order  Disorder

  • High T  Low T while there is a ΔT


Entropy5
ENTROPY

  • Order  Disorder

  • High T  Low T while there is a ΔT

  • Afterwards they mix and there is no useful work done.


Entropy6
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


Entropy7
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.


Entropy8
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.






  • 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


Entropy9
ENTROPY

  • WMAP Web Link at Goddard Space Flt Ctr

  • http://map.gsfc.nasa.gov/index.html

  • Results H = 70.7 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/


Entropy10
ENTROPY

  • Results H = 70.9 km/s/MPc ( Pub 2007)

  • Typically T = 1/H = 13.7 x 109 y age of our universe.


Entropy11
ENTROPY

  • Results H = 70.9 km/s/MPc ( Pub 2007)

  • Typically T = 1/H = 13.7 x 109 y age of our universe.

  • END – Tipler and Mosca

  • (Please return the text to the bookstore after the first exam for use by other students this semester)


Transition to schroeder
TRANSITION TO Schroeder

  • Symbols will change – careful


Transition to schroeder1
TRANSITION TO Schroeder

  • Symbols will change – careful

  • Equations will have slight changes One example see p.18


Transition to schroeder2
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.


Transition to schroeder3
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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