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Seems to me that the term "dimensional analysis" is used in two
different ways. Some sources use it to mean simply converting from
one kind of units to another (how many square centimeters are there
in an acre?); this usage of the term is also called the factor label
method. Others use it to mean comparing the dimensions of the
physical quantities to find relationships between the quantities.
Do the two uses fall along disciplinary lines (chemistry vs.
physics)? Looking at many hits from a web search led me to that
tentative conclusion.
What do you mean when you say "dimensional analysis"?