Small amounts of nickel and cobalt are often present.
Mag., 1898, 46, 261) have investigated the effects of hydrostatic pressure upon magnetization, using the same pieces of iron and nickel as were employed in their experiments upon magnetic change of volume.
At one point, Tiger Woods got a dime for every box of Wheaties cereal with his photo on it, while the farmer was paid only a nickel for the wheat in that same box—and the farmer still made a profit.
Taylor Jones showed in 1897 that only a small proportion of the contraction exhibited by a nickel wire when magnetized could be accounted for on Kirchhoff's theory from the observed effects of pulling stress upon magnetization; and in a more extended series of observations Nagaoka and Honda found wide quantitative divergences between the results of experiment and calculation, though in nearly all cases there was agreement as to quality.
Tomlinson found a critical point in the " temporary magnetization " of nickel (Proc. Phys.