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摘要

Measurements, one might say, are a simple quantification of the thing measured. In fact, to some, the measurement itself is a science. "Measurement" of something is the comparison of one of its attributes to a calibrated, standard. The standard itself is the subject of rigorous objective study. One outcome of that study is the proper calibration of accurate instruments, themselves reflecting the standard to within a known margin of error. And, the margin of error is closely focused to within a few percentage points of probable uncertainty. Thus the three faces of measurement as a science are the measurement, the measurements' margin of error and the degree of confidence you have in it. Through the ages there have been some fascinating stories behind the development of metrology - the study of measurement. In the modern world the trend toward standardization is inevitable. It does not follow on from the historic and anomalous. In all our endeavors we need to meet exacting standards. Our work needs to be accountable, measurable, observable, and repeatable. Precise figures to many, many decimal places or exact figures to a finite definition are needed in everything.