In engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their fundamental dimensions (such as length, mass, time, and electric charge) and units of measure (such as miles vs. kilometers, or pounds vs. kilograms vs. grams) and tracking these dimensions as calculation...
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technique used in the physical sciences and engineering to reduce physical properties, such as acceleration, viscosity, energy, and others, to their ... [1 related articles]
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http://www.britannica.com/eb/a-z/d/50
a method for comparing the dimensions of the physical quantities occurring in a problem to find relationships between the quantities without having to solve the problem completely. Cf. dimension (def. 6).
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