Mechanical laboratory methods; the testing of instruments and machines in the mechanical engineering laboratory and in practice (1922)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 37
theoretically, they must follow a curved line. (Physical Review,October, 1911.) To represent them by a straight line is therefore merelya convenient approximation. 20 SCALES AND PRESSURE GAGES to be used when the readings of the instrument increase; sim-ilarly with the other two spring scales. Note… … 0.80 1.20 Extension in Inches Fig. 6. (b) Spring Scale by Method of Least Squares. The theoryof errors shows that the most probable straight line to fit suchdata is one so located that the sum of the squares of the distancesof the plotted points from the line shall be a minimum. Thiscan be…
Mechanical engineering
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