On the problem of calculating baseline measurement errors of a using the improved Jäderin apparatus
Abstract
The article highlights the most significant among the constant errors and points out the importance of this distinction for correctly assessing the accuracy of baseline measurement using the Jäderin apparatus. The main constant error is the error in the given length of the wire. Other errors—those resulting from incorrect temperature correction, slope, or deviation of the wire from the baseline axis—are negligible. The available data show: 1) a decrease in the relative error with an increase in the baseline length for a single wire; 2) good agreement between the results of forward and backward measurements with the same wire, which provides grounds for not seeking any other systematic error beyond the errors in the calibration of the wires. The absence of systematic errors in the measurement process itself constitutes the main advantage of the method of measuring with invar wires of considerable length.
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