Rayleigh's method of dimensional analysis

Rayleigh's Method of Dimensional Analysis is a way to solve problems involving different units. It works by setting up an equation with 'numbers' that represent each unit. For example, if you want to know how many seconds are in an hour, you need to know that there are 60 seconds in one minute and 60 minutes in one hour. You can use Rayleigh's Method of Dimensional Analysis to figure out that one hour is equal to 3600 seconds, because you set up an equation that looks like this: 60 seconds/minute X 60 minutes/hour = 3600 seconds/hour. So, you were able to use numbers to represent each unit, and then solve the equation to figure out how many seconds are in an hour!