, while the other five yield about the right value, namely,
. In other words (as stated on [p. 165] above), five of these drops fall exactly on my curve ([Fig. 5]), one falls somewhat above it, one somewhat below, while two are entirely off and very much too low. These two, therefore, I concluded were not oil at all, but dust particles. Since Zerner computes the radius from the rate of fall, these two dust particles which fall much too slowly, and therefore yield too low values of
, must, of course, yield correspondingly low values of
. Since they are found to do so, Zerner concludes that our oil drops, as well as Ehrenhaft’s mercury particles, yield decreasing values of
with decreasing radius. His own tabulation does not show this. It merely shows three erratic values of