A Nobody's Knowledge Bank
Friday, March 10, 2006
  An Introduction to Monte Carlo Methods

The expression "Monte Carlo method" is actually very general. Monte Carlo (MC) methods are stochastic techniques--meaning they are based on the use of random numbers and probability statistics to investigate problems. You can find MC methods used in everything from economics to nuclear physics to regulating the flow of traffic. Of course the way they are applied varies widely from field to field, and there are dozens of subsets of MC even within chemistry. But, strictly speaking, to call something a "Monte Carlo" experiment, all you need to do is use random numbers to examine some problem.

The use of MC methods to model physical problems allows us to examine more complex systems than we otherwise can. Solving equations which describe the interactions between two atoms is fairly simple; solving the same equations for hundreds or thousands of atoms is impossible. With MC methods, a large system can be sampled in a number of random configurations, and that data can be used to describe the system as a whole.

"Hit and miss" integration is the simplest type of MC method to understand, and it is the type of experiment used in this lab to determine the HCl/DCl energy level population distribution. Before discussing the lab, however, we will begin with a simple geometric MC experiment which calculates the value of pi based on a "hit and miss" integration.

Related Courses: Digital Electronics, Probability, Statistics
 
Comments:
.
We work like a horse.
We eat like a pig.
We like to play chicken.
You can get someone's goat.
We can be as slippery as a snake.
We get dog tired.
We can be as quiet as a mouse.
We can be as quick as a cat.
Some of us are as strong as an ox.
People try to buffalo others.
Some are as ugly as a toad.
We can be as gentle as a lamb.
Sometimes we are as happy as a lark.
Some of us drink like a fish.
We can be as proud as a peacock.
A few of us are as hairy as a gorilla.
You can get a frog in your throat.
We can be a lone wolf.
But I'm having a whale of a time!

You have a riveting web log
and undoubtedly must have
atypical & quiescent potential
for your intended readership.
May I suggest that you do
everything in your power to
honor your encyclopedic/omniscient
Designer/Architect as well
as your revering audience.
As soon as we acknowledge
this Supreme Designer/Architect,
Who has erected the beauteous
fabric of the universe, our minds
must necessarily be ravished with
wonder at this infinate goodness,
wisdom and power.

Please remember to never
restrict anyone's opportunities
for ascertaining uninterrupted
existence for their quintessence.

There is a time for everything,
a season for every activity
under heaven. A time to be
born and a time to die. A
time to plant and a time to
harvest. A time to kill and
a time to heal. A time to
tear down and a time to
rebuild. A time to cry and
a time to laugh. A time to
grieve and a time to dance.
A time to scatter stones
and a time to gather stones.
A time to embrace and a
time to turn away. A time to
search and a time to lose.
A time to keep and a time to
throw away. A time to tear
and a time to mend. A time
to be quiet and a time to
speak up. A time to love
and a time to hate. A time
for war and a time for peace.

Best wishes for continued ascendancy,
Dr. Howdy


P.S. One thing of which I am sure is
that the common culture of my youth
is gone for good. It was hollowed out
by the rise of ethnic "identity politics,"
then splintered beyond hope of repair
by the emergence of the web-based
technologies that so maximized and
facilitated cultural choice as to make
the broad-based offerings of the old
mass media look bland and unchallenging
by comparison."

 
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