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Construction of Primary Mercurial Resistance Standards (Classic Reprint)
F. A. Wolff
No preview available - 2016
accuracy adjustment ampere applied auxiliary ratio Average deviation balance battery connections brass caliber corrections caliber factor calibrating thread capillary celloidin cm points comparator complete calibration computed connecting resistances copper Corrections for extensions curvature decimeter denote determination of M0 Deviation from mean diameter double distilled water electrical comparisons electrical measurements eliminate employed end surfaces error due fill the tube finished tubes formula four tubes galvanometer given in Table glass Graduations in centimeters grams ice bath international ohm lower end manganin coils mass of mercury mean cross section meniscus mercury column mercury resistance mercury seal mercury unit meter 39 microscopes millimeters million millionths smaller mounted National Physical Laboratory obtained plane plate polished plate polishing potential terminals probable error Reichsanstalt method required to fill ruled surface screw shunt Smith's method steel subcalibration supports temperature terminal bulbs Thomson bridge thread length tion tubes and extensions unit defined wire standards