# Dynamics (physics)

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Dynamics (physics)

In physics the term dynamics customarily refers to the time evolution of physical processes. These processes may be microscopic as in particle physics, kinetic theory, and chemical reactions,cite book |title=Theories of Molecular Reaction Dynamics: The Microscopic Foundation of Chemical Kinetics |author=Niels E. Henriksen, Flemming Y. Hansen |url=http://books.google.com/books?id=vVLYDSmZglIC&dq=intitle:microscopic+intitle:dynamics&lr=&as_brr=0&source=gbs_summary_s&cad=0 |isbn=0199203865 |year=2008 |publisher=Oxford University Press] or macroscopic as in the predictions of statistical mechanics and nonequilibrium thermodynamics.

Fundamental Principles

Empirical laws

* Newton's laws of motion
** Inertia
** Acceleration
** Momentum
** Reaction
* Newton's law of universal gravitation
* Ampère's circuital law
* Coulomb's law
* Lenz's law

Quasi-empirical laws

* Thermodynamics#The laws of thermodynamics

Philosophical constraints

* Special theory of relativity

Axioms and mathematical treatments

* Variational principles and Lagrange's equations
* Hamilton's equations
* Canonical transformations
* Hamilton-Jacobi Theory

Related engineering branches

* Particle dynamics
* Rigid body dynamics
* Soft body dynamics
* Fluid dynamics
** Hydrodynamics
** Gas dynamics
** Aerodynamics

Related subjects

* Statics

References

Wikimedia Foundation. 2010.

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