posted by anonymous .
what is dimensional analysis
Dimensional analysis is the use of units in an equation/derivation to check the validity of the process. In practical terms, many use the term to mean using a conversion factor. For example, suppose we wish to convert 100 cm to 1 m and we know the factor is 1 m = 100 cm. Therefore,
100 cm x (1 m/100 cm) = 1 meter. Note how the cm unit in the numerator cancels with the cm unit in the denominator leaving the unit we want to keep all alone.
Here is more information for you to read. http://en.wikipedia.org/wiki/Dimensional_analysis