#acl All:read

== Lecture notes ==

 * <<la(L19-IT-Nonlinear-Physics.pdf, "Lecture 19, Dec. 1")>>: Inertia tensors and non-linear physics.
   * ~-<<color("One correction in page 12")>>-~: $\omega_N \rightarrow \omega_N^2$.
   * <<ln(http://pages.physics.cornell.edu/~myers/teaching/ComputationalMethods/ComputerExercises/PythonSoftware/AnimateDoublePendulum.py,"source code (python) for the double pendulum demo")>>.

 * <<la(L18-CO-Rigid-Body.pdf, "Lecture 18, Nov. 29")>>: Coupled Oscillator examples and rigid body.
   * ~-<<color("One correction in page 4")>>.-~ Thanks, IL!
   * ~-<<color("Two corrections in page 9")>>.-~ Thanks, NS!
 * <<la(L17-CO-Example.pdf,"Lecture 17, Nov. 22")>>: Coupled oscillators.  ([[/L17/Qs|Qs]])
   * ~-<<color("One correction in page 3")>>.-~ Thanks, MD!
 * <<la(L16-Coupled-Oscillators.pdf,"Lecture 16, Nov. 17")>>: Coupled oscillators.
   * ~-<<color("Some footnotes and several sentences added.", green)>>-~ &mdash; [[Sam]], ~-''<<DateTime(2011-11-18T11:15:53-0700)>>''-~
 * <<la(L15-Scattering.pdf,"Lecture 15, Nov. 15")>>: Collisions, impact parameter, crossection.
   * ~-<<color("Correction: ")>>-~ Figure on page 6.  $dA/\cos \theta$.  &ndash; ~-''<<DateTime(2012-11-23T14:13:35-0800)>>''-~
   * ~-<<color("Correction: on page 8.  One typo")>>.-~  Thanks, DL!
   * ~-<<color("'Typically but not always,' added in page 7 (red)")>>.-~
   * ~-<<color("'short' added in page 1 (red)")>>.-~  Thanks, PW!
 * <<la(L14-Kepler-and-Many-Body.pdf,"Lecture 14, Nov. 10")>>: Kepler problem and many particle system.
   * ~-<<color("Two corrections: page 8, top")>>.-~ Thanks, IG!
 * <<la(L13-Central-Force-Kepler+.pdf,"Lecture 13, Nov. 8")>>: Kepler problem.  ([[/L13/Qs|Qs]])
   * ~-<<color("Correction: page 2, $L_{M} \rightarrow L_{cm}$.")>>-~
 * <<la(L12-Gravity.pdf,"Lecture 12, Nov. 3")>>: Gravity.  ([[/L12/Qs|Qs]])
 * <<la(L11-LwC-H-Gravity+.pdf,"Lecture 11, Nov. 1")>>: Lagrangian with constraint, Effective potential, Gravity.
 * <<la(L10-H-and-LwC.pdf,"Lecture 10, Oct. 25")>>: Hamiltonian. Lagrangian with constraint.  ([[/L10/Qs|Qs]])
 * <<la(L09-Sym-Cons+.pdf,"Lecture 9, Oct. 20")>>: Symmetry and conservation.  Momentum and angular momentum.  ([[/L09/Qs|Qs]])
   * ~-<<color("One correction in page 4")>>.-~  Thanks, NS!
   * ~-<<color("Addition in page 6")>>: Added "$\delta L =$".-~
 * <<la(L08-PoLA+.pdf,"Lecture 8, Oct. 18")>>: Principle of least action. (<<la(GF-w-Sols.pdf,"Green's function method -- solutions")>>)
   * ~-<<color(Page numbers corrected.)>>-~ &mdash; [[Sam]], ~-''<<DateTime(2011-10-25T14:25:34-0700)>>''-~
 * <<la(L07-Driven-SHO.pdf,"Lecture 7, Oct. 13")>>: Driven oscillations. ([[/L07/Qs|Qs]])
 * <<la(L06-Small-Oscillations.pdf,"Lecture 6, Oct. 11")>>: Small oscillations, free or damped. ([[/L06/Qs|Qs]])
 * <<la(L05-Conservations-1D-Motion.pdf,"Lecture 5, Oct. 6")>>: Conservation principles and 1D motions.
   * ~-<<color("Correction: on page 7.  A bunch of sqrt notations corrected")>>.-~  Thanks, AM!
 * <<la(L04-Lorentz-Force.pdf,"Lecture 4, Oct. 4")>>: Lorentz force. ([[/L04/Qs|Qs]])
   * Read footnote 3, to clear up the confusion for the number of integration constants.
   * When we consider the time-reversal symmetry of this problem, we do not reverse the direction of $\vec{B}$, taking it as given.  If we can reverse the direction of $\vec{B}$ as well as the direction of the particle's motion, then the time reversal symmetry would be valid.  Read end of page 4, to see why sometimes $\vec{B}$ is not reversible.
 * <<la(L03-Perturbation-and-Air-Resistance.pdf,"Lecture 3, Sep. 29")>>: Perturbation.  Air resistance. ([[/L03/Qs|Qs]])
   * ~-<<color("Correction: Page 8, a new box on perturbation expansion.  2/3 &rarr; 1/3 in 3 lines above the box.")>>-~ &mdash; [[Sam]], ~-''<<DateTime(2011-10-04T13:04:22-0700)>>''-~
 * <<la(L02-Newtons-Laws.pdf,"Lecture 2, Sep. 27")>>: Newton's laws.  Air resistance. ([[/L02/Qs|Qs]])
 * <<la(L01-Intro.pdf,"Lecture 1, Sep. 22")>>: What to learn?   Particles, dimensions. Vectors and (orthogonal) matrices.

== Appendices ==

 * <<la(A01-Perturbation.pdf,"A1: Perturbation")>>.
   * Page 5 and examples are important.
   * ~-<<color("Correction: Page 8, $gt$ &rarr; $g$ for the first term in the equation for $\dot{v}$ from 2nd order and higher.")>>-~  Thanks, JW.  You will get 10 % "LN debug bonus" on the current homework (#8). &mdash; [[Sam]], ~-''<<DateTime(2011-11-23T01:45:47-0700)>>''-~   
 * <<la(A02-Trig.pdf,"A2: Essential trig identities")>>.