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Substitution Method

   Also found in: Wikipedia 0.01 sec.
substitution method [‚səb·stə′tü·shən ‚meth·əd]
(physics)
Any method of measurement, such as substitution weighing, in which a quantity is determined by substituting for it a known quantity which produces the same effect.

Substitution Method 

a method for eliminating systematic measurement errors caused by errors in the measuring instrument used to compare the quantity being measured with a standard. In the substitution method the value of the quantity being measured is not found indirectly, from a reading of the measuring instrument, but rather from the magnitude of the standard, which is selected or regulated in such a way that the reading of the measuring instrument remains the same when the quantity being measured is replaced by the standard. For example, when weighing an object on a beam balance, the object is taken from the pan and replaced by weights of equal total weight; the balance will show the previous reading (the Borda method). The substitution method is extensively used in measuring electrical quantities, such as resistance, capacitance, and inductance.

K. P. SHIROKOV



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While other studies have made use of the price substitution method (27) in order to prevent loss of data, it is not without bias.
The density and specific heat of the PP/mica compound material were measured using an underwater substitution method and the differential scanning calorimeter method, respectively.
 
 
 
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