1. What is systematic error in physics
and its sources?
Systematic
errors are which affect measurement in a regular and essentially predictable
way, perhaps increasing every measurement by a constant amount or in some
constant proportion. Examples of
systematic error in physics are errors in calibration of a scale, wrong scale calibration will result to a
continuous error in the data obtained and this will be regular and a predictable
way.
the second examples are error due to instrumental fault, error in value of
standards like balance weight and also
error due to approximation in theory.
Systematic
error usually introduce a definite bias one way or the other i.e they will tend to give either a positive
error or negative error.
in any experiment systematic error has to be
looked upon and corrected, except where it is practically impossible to do so.
Unknown
source of systematic error can be checked for by using two or more independent
method of measurement or testing for agreement between a theoretically
predicted value and the measured value.
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