text: In dimensional analysis, Rayleigh's method is a conceptual tool used in physics, chemistry, and engineering. It expresses a functional relationship of some variables in the form of an exponential equation. It was named after Lord Rayleigh.
  The method involves the following steps:
  # Gather all the independent variables that are likely to influence the dependent variable.
  # If  is a variable that depends upon independent variables , , , ..., , then the functional equation can be written as .
  # Write the above equation in the form , where  is a dimensionless constant and , , , ...,  are arbitrary exponents.
  # Express each of the quantities in the equation in some base units in which the solution is required.
  # By using dimensional homogeneity, obtain a set of simultaneous equations involving the exponents , , , ..., .
  # Solve these equations to obtain the values of the exponents , , , ..., .
  # Substitute the values of exponents in the main equation, and form the non-dimensional parameters by grouping the variables with like exponents.
  As a drawback, Rayleigh's method does not provide any information regarding number of dimensionless groups to be obtained as a result of dimensional analysis.