Science in Society

Bryn Mawr College

Special Symposium, Spring 2003
"A Matter of Time"

February 19, 2003
Tony Rothman

"Seven Arrows of Time"
(PowerPoint file; 2.6MB)

(To appear, click above for Rothman handout)
Additions, revisions, extensions are encouraged in the Forum

The Deep(est) Paradox of Physics is that Physics is Time Symmetric, but Nature is not.

The Seven Arrows of Time are:
  1. Memory Arrow

  2. Electromagnetic Arrow

  3. Quantum Arrow

  4. Black Hole Arrow

  5. Cosmological Arrow

  6. Kaon Arrow

  7. Entropy Arrow

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