Practical radiography : a handbook for physicians, surgeons, and other users of X-rays (1901)
Isenthal, A. W, Ward, H. Snowden (Henry Snowden), 1865-1911 · London : Published for The Photogram, Ltd. by Dawbarn and Ward, Ltd. · leaf 24
, to makethe reader acquainted with the principal Units of theelectrical factors—names which constantly occur in thesubsequent chapters—and also to introduce a few simplebut important laws. The unit of the E.M.F. is called a volt, and isabout equivalent to the E.M.F. of a cell having for… … Radiogram of Steel-joint showing extent of Brazing.(By Hall Edwards, L.R.C.P... Birmingham.) Sources of Electric Energy 17 motion) tends to obstruct the passage of an electric current—is called an ohm, and represents the resistance of acolumn of mercury (at 32° F.) of one square millimetresection…
Radiography · X-rays
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